GRB120326A

This page lists all entries on GRB120326A in GRBweb

Summary Fermi GBM IPN Swift GCN 13105 GCN 13106 GCN 13107 GCN 13108 GCN 13109 GCN 13110 GCN 13111 GCN 13112 GCN 13113 GCN 13114 GCN 13115 GCN 13117 GCN 13118 GCN 13119 GCN 13120 GCN 13121 GCN 13122 GCN 13126 GCN 13131 GCN 13136 GCN 13139 GCN 13142 GCN 13143 GCN 13145 GCN 13149 GCN 13150 GCN 13155 GCN 13160 GCN 13170 GCN 13172 GCN 13175 GCN 13176 GCN 13177 GCN 13178 GCN 13181 GCN 13185 GCN 13189 GCN 13192 GCN 13201

Summary table
Variable Value Source
GRB_name_Fermi GRB120326056
T0 1:20:29 UTC GCN_circulars,Swift Det
ra 273.9047° Swift
decl 69.2598° Swift
pos_error 6.47e-05° Swift
T90 11.776 s Fermi_GBM
T90_error 1.81 s Fermi_GBM
T90_start 1:20:30.233 UTC Fermi_GBM
fluence 3.26e-06 erg/cm² Fermi_GBM
fluence_error 4.84e-08 erg/cm² Fermi_GBM
redshift 1.7980 GCN_circulars,Optical
T100 69.6 s
GBM_located False
mjd 56012.0558912037 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB120326056
trigger_name bn120326056
ra 273.9050°
decl 69.2600°
pos_error 4.08e+00°
datum 2012-03-26
t_trigger 1:20:31.513 UTC
T90 11.776 s
T90_error 1.81 s
T90_start 1:20:30.233 UTC
fluence 3.26e-06 erg/cm²
fluence_error 4.84e-08 erg/cm²
flux_1024 7.74e+00 erg/cm²/s
flux_1024_error 2.79e-01 erg/cm²/s
flux_1024_time 1.98e+00 erg/cm²/s
flux_64 1.05e+01 erg/cm²/s
flux_64_error 1.26e+00 erg/cm²/s
IPN table
GRB_name GRB120326A
ra 273.9250°
decl 69.2833°
pos_error 5.00e-02°
redshift 1.7980
Swift table
GRB_name GRB120326A
t_trigger 1:20:29 UTC
ra 273.9047°
decl 69.2598°
pos_error 6.47e-05°
T90 69.6 s
fluence 2.60e-06 erg/cm²
redshift 1.7980
GCN 13105 table
GRB_name GRB120326A
GCN_number 13105
Detection_method Swift Det
t_trigger 1:20:29 UTC
ra 273.9250°
decl 69.2780°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13105 SUBJECT: GRB 120326A: Swift detection of a burst DATE: 12/03/26 01:32:31 GMT FROM: David Palmer at LANL M. H. Siegel (PSU), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), D. Grupe (PSU), E. A. Hoversten (PSU), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), B. Sbarufatti (INAF-OAB/PSU) and C. A. Swenson (PSU) report on behalf of the Swift Team: At 01:20:29 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120326A (trigger=518626). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 273.925, +69.278 which is RA(J2000) = 18h 15m 42s Dec(J2000) = +69d 16' 41" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single FRED structure with a duration of about 40 sec. The peak count rate was ~8000 counts/sec (15-350 keV), at ~4 sec after the trigger. The XRT began observing the field at 01:21:28.8 UT, 59.5 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source located at RA, Dec 273.90195, 69.26028 which is equivalent to: RA(J2000) = 18h 15m 36.47s Dec(J2000) = +69d 15' 37.0" with an uncertainty of 4.1 arcseconds (radius, 90% containment). This location is 70 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 5.24 x 10^20 cm^-2 (Kalberla et al. 2005). The initial flux in the 2.5 s image was 2.01e-09 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 67 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. No afterglow is seen in the 2.7'x2.7' sub-image. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.05. Burst Advocate for this burst is M. H. Siegel (siegel AT astro.psu.edu). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN 13106 table
GRB_name GRB120326A
GCN_number 13106
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 13106 SUBJECT: GRB 120326A: ROTSE-III Optical Limits DATE: 12/03/26 01:47:12 GMT FROM: Wiphu Rujopakarn at U AZ/Steward W. Rujopakarn (Steward) and H. Flewelling (IfA/Hawaii) report on behalf of the ROTSE collaboration: ROTSE-IIId, located at the Turkish National Observatory at Bakirlitepe, Turkey, responded to GRB 120326A (Swift trigger 518626; Siegel et al., GCN 13105), producing images beginning 9.9 s after the GCN notice time. An automated response took the first image at 01:20:51.9 UT, 22.6 s after the burst, under fair conditions. We took 10 5-sec, 10 20-sec and 10 60-sec exposures. These unfiltered images are calibrated relative to USNO A2.0 (R). Imaging is on going. Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma Swift/BAT error circle or the XRT error circle, for both single images and coadding into sets of 10. Individual images have limiting magnitudes ranging from 14.7-16.7; we set the following specific limits. start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd? -------------------------------------------------------------------- 01:20:51.9 01:20:56.9 5 14.7 22.6 N 01:20:51.9 01:22:59.9 128 16.3 22.6 Y
GCN 13107 table
GRB_name GRB120326A
GCN_number 13107
Detection_method Optical
ra 273.9044°
decl 69.2598°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13107 SUBJECT: GRB 120326A: TAROT Calern observatory afterglow optical detection DATE: 12/03/26 01:54:39 GMT FROM: Alain Klotz at CESR-CNRS Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR), Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: We imaged the field of GRB 120326A detected by SWIFT (trigger 518626) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. The observations started 133.1s after the GRB trigger (119.3s after the notice). The elevation of the field increased from 49 degrees above horizon and weather conditions were good. We detect a new fading source in the error box given by SWIFT We detected the candidate couterpart at the XRT position mentioned by Siegel et al. (GCNC 13105) at the following position (+/- 2 arcsec): RA(J2000) = 18h 15m 37.06s DEC(J2000) = +69d 15' 35.3" OT was R~18.2 at 163s after GRB. Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction. As the afterglow was not detected by UVOT, we suggest a high redshift (but z<7) for this burst. N.B. Galactic coordinates are lon= 99.5219 lat=+28.3852 and the galactic extinction in R band is about 0.1 magnitude estimated from D. Schlegel et al. 1998ApJ...500..525S. This message may be cited.
GCN 13108 table
GRB_name GRB120326A
GCN_number 13108
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13108 SUBJECT: GRB 120326A: TAROT Calern observatory afterglow optical decay DATE: 12/03/26 02:35:17 GMT FROM: Alain Klotz at CESR-CNRS Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR), Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: The TAROT observations are continuing after the optical detection mentioned in the GCNC (13107): start end Rmag (min) (min) 2.22 3.21 18.2 24.91 40.66 19.1 That suggests a slow decay (alpha~0.35) of the optical afterglow.
GCN 13109 table
GRB_name GRB120326A
GCN_number 13109
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 13109 SUBJECT: Skynet/Dolomiti Observations of GRB120326A DATE: 12/03/26 03:02:32 GMT FROM: Aaron LaCluyze at U.North Carolina A. LaCluyze, J. Haislip, K. Ivarsen, M. Maturi, D. Reichart, J. Moore, H. T. Cromartie, R. Egger, A. Foster, N. Frank, M. Nysewander, A. Oza, E. Speckhard, A.Trotter, and J. A. Crain report: Skynet observed the Swift/XRT localization of GRB 120326A (Swift trigger #518626) with the Dolomites Astronomical Observatory located at the Carlo Magno Hotel Spa Resort in Italy. Observations in SDSS g',r',i' and z' began 93 seconds after the trigger (113 seconds after the burst). We detect an optical transit at the position reported by Klotz et. al. (GCN 13107). Stacking images and calibrating to USNO B1.0 stars yields the following: Mean Time Since triger Tel Exposures Filter Magnitude 37.23 m DAO 3 x 160 s g 20.770 39.90 m DAO 4 x 160 s r 19.868 51.48 m DAO 5 x 160 s i 19.236
GCN 13110 table
GRB_name GRB120326A
GCN_number 13110
Detection_method Swift-XRT Det
ra 273.9045°
decl 69.2600°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13110 SUBJECT: GRB 120326A: Enhanced Swift-XRT position DATE: 12/03/26 05:12:08 GMT FROM: Phil Evans at U of Leicester M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team. Using 1040 s of XRT Photon Counting mode data and 4 UVOT images for GRB 120326A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 273.90451, +69.25998 which is equivalent to: RA (J2000): 18h 15m 37.08s Dec (J2000): +69d 15' 35.9" with an uncertainty of 1.8 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 13111 table
GRB_name GRB120326A
GCN_number 13111
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13111 SUBJECT: GRB 120326A: Liverpool Telescope observations DATE: 12/03/26 06:50:26 GMT FROM: Cristiano Guidorzi at Ferrara U,Italy C. Guidorzi (U. Ferrara) reports on behalf of the LJMU GRB group: The 2-m Liverpool Telescope automatically observed Swift GRB 120326A (Siegel et al. GCN Circ. 13105) on March 26, from 01:34:07 UT, corresponding to 13.6 minutes after the BAT trigger time. Within the XRT error circle we clearly detect the optical afterglow (Klotz et al. GCN Circ. 13107, 13108; LaCluyze et al. GCN Circ 13109) with the SDSS riz filters at the following position 18:15:37.13 +69:15:35.7 (J2000) uncertainty of 0.3". We estimate the magnitude of the afterglow as follows: Mid time from Exp Filter Magnitude GRB (min) (s) --------------------------------------------- 14.1 3x10 r 19.1 +- 0.2 44.8 120 r 19.6 +- 0.1 --------------------------------------------- Magnitudes are calibrated against nearby USNOB-1 stars.
GCN 13112 table
GRB_name GRB120326A
GCN_number 13112
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 13112 SUBJECT: GRB120326A: IAC80 observations DATE: 12/03/26 07:29:53 GMT FROM: Javier Gorosabel at IAA-CSIC Walker, C., Court J., Duffy, R., Edwards T., Herath, M., Kirk, J., Patel, S., Prajs, S., Tunbridge, B., Williams, D., Wood, R., Wright, P., Munoz-Darias, T., Knigge, C., Coriat, M. (University of Southampton), Gimeno, R. (IAC, Tenerife), Gorosabel, J. (IAA-CSIC, Granada), report: We observed the Swift/XRT location of the GRB 120326A (Goad et al., GCNC 13110) using the IAC80 82cm telescope at Tenerife (Canary Islands, Spain). We took a set of VRI-band images from 02:23:20 UT to 05:47:06 UT. The optical transient (Klotz et al., GCNC 13108) is clearly detected. After a calibration using the USNO B1 catalogue, we detected an important rebrightening from R=19.4 to R=18.4.
GCN 13113 table
GRB_name GRB120326A
GCN_number 13113
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13113 SUBJECT: GRB 120326A: Optical observations at Crni Vrh DATE: 12/03/26 13:17:23 GMT FROM: Bojan Dintinjana at OCV B. Dintinjana and B. Mikuz on behalf of PIKA observing program at Crni Vrh Observatory: We observed the afterglow of GRB 120326A (Siegel et al., GCN 13105) with 60 cm Cichocki robotic telescope at Crni Vrh Observatory, Slovenia. The series of twenty 60 second exposures with R filter started at 1:27:50UT, 440 seconds after the burst. We confirm optical afterglow at coordinates by C. Guidorzi (GCN 13111). Photometry results are given in table below. The table contains the time since the Swift GRB detection to the middle of exposure in seconds, R magnitude and photometric error. The magnitudes are derived using comparison stars from the USNO-B1 catalogue. The 3-sigma limiting magnitude in R filter is around magnitude 20.5 0.3 Time [s] R Mag Err. ---------------------------- 440 18.51 0.2 507 19.07 0.2 574 19.21 0.3 641 19.75 0.4 708 19.63 0.6 775 19.10 0.2 842 19.48 0.3 909 19.19 0.2 976 19.77 0.4 1043 19.01 0.2 1110 19.11 0.2 1177 19.18 0.2 1244 19.62 0.3 1311 20.02 0.5 1379 19.35 0.3 1446 19.79 0.4 1513 19.38 0.3 1580 18.97 0.2 1647 19.42 0.3 1714 19.82 0.4 ----------------------------
GCN 13114 table
GRB_name GRB120326A
GCN_number 13114
Detection_method Swift-UVOT Det
ra 273.9047°
decl 69.2598°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13114 SUBJECT: GRB 120326A: Swift/UVOT Detection DATE: 12/03/26 13:21:22 GMT FROM: Paul Kuin at MSSL N. P. M. Kuin (MSSL-UCL), S. Holland (STScI), and M. H. Siegel (PSU) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 120326A 67 s after the BAT trigger (Siegel et al., GCN Circ. 13105). A source consistent with the XRT position (Goad et al., GCN Circ. 13110 is detected in the initial UVOT exposures at position: RA (J2000) = 18:15:37.13, Dec (J2000) = +69:15:35.36 or, in decimal degrees: 273.90471, 69.259822 with an uncertainty of 0.5" (90 % confidence). The transient was initially increasing in brightness, and after a small decay rebrightened around 10ks after the trigger. There is also some indication of colour dependence of the time of rebrightening. The detection in the UVOT uvw2 filter gives an upper limit for the redshift of about z < 1.6 for this burst. Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 67 217 147 >20.0 white 3903 4103 197 20.16 +/- 0.12 v 4314 5949 393 >19.3 b 3697 5334 393 20.23 +/- 0.16 u 4929 5128 197 19.66 +/- 0.20 m2 4518 16222 1228 >21.2 w2 4109 5744 393 >21.0 w1 9527 10427 886 20.21 +/- 0.18 v 21959 22259 295 18.67 +/- 0.12 w2 21052 21952 886 21.26 +/- 0.32 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998).
GCN 13115 table
GRB_name GRB120326A
GCN_number 13115
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 13115 SUBJECT: GRB 120326A: Swift-XRT refined Analysis DATE: 12/03/26 13:32:06 GMT FROM: Phil Evans at U of Leicester J.A. Kennea (PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), C. Pagani (U. Leicester), G. Stratta (ASDC), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC) and M.H. Siegel report on behalf of the Swift-XRT team: We have analysed 12 ks of XRT data for GRB 120326A (Siegel et al. GCN Circ. 13105), from 65 s to 34.6 ks after the BAT trigger. The data comprise 100 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 13110). The late-time light curve (from T0+3.7 ks) can be modelled with an initial power-law decay with an index of alpha=0.20 (+0.15, -0.11), followed by a break at T+16.6 ks to an alpha of -1.47 (+0.76, -0.03). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 4.4 (+0.4, -0.3). The best-fitting absorption column is 3.4 (+/-0.5) x 10^21 cm^-2, in excess of the Galactic value of 5.2 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.89 (+/-0.10) and a best-fitting absorption column of 9.1 (+2.3, -2.2) x 10^20 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.8 x 10^-11 (4.6 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 9.1 (+2.3, -2.2) x 10^20 cm^-2 Galactic foreground: 5.2 x 10^20 cm^-2 Excess significance: 2.9 sigma Photon index: 1.89 (+/-0.10) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00518626. This circular is an official product of the Swift-XRT team.
GCN 13117 table
GRB_name GRB120326A
GCN_number 13117
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 13117 SUBJECT: GRB 120326A: CQUEAN grizY Observation DATE: 12/03/26 15:13:20 GMT FROM: Myungshin Im at Seoul Nat U Myungshin Im, Jae-Woo Kim, and Duho Kim (CEOU/Seoul National Univ.) We observed GRB 120326A (Siegel et al., GCN 13105) in g,r,i,z,Y filters using CQUEAN camera on the 2.1m Otto-Struve telescope at McDonald Observatory, Texas, US. The observation started at 2012-03-26 10:09:22 UT, or about 8.8 hours after the BAT alert. In all of the g,r,i,z,Y-band images with 300 sec exposure time each, we clearly detect the afterglow reported earlier (Klotz et al. GCN 13107, Guidorzi et al. GCN 13111, Walker et al. GCN 13112, Dintinjana et al. GCN 13113, Kuin et al. GCN 13114), We thank Karl Gebhardt and Alysha Shugart for allowing us to observe this object during their observing run. We plan to perform additional observations.
GCN 13118 table
GRB_name GRB120326A
GCN_number 13118
Detection_method Optical
redshift 1.7980
Circular_text TITLE: GCN CIRCULAR NUMBER: 13118 SUBJECT: GRB 120326A: GTC redshift DATE: 12/03/26 15:39:01 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia J. C. Tello, R. Snchez-Ramrez, J. Gorosabel, A. J. Castro-Tirado (IAA-CSIC Granada), M. A. Rivero, G. Gmez-Velarde (GTC La Palma) and A. Klotz (IRAP-CNRS-OMP), on behalf of a larger collaboration, report: "Following the detection of the optical afterglow to GRB 120326A (Siegel et al. GCNC 13105, Klotz et al. GCNC 13107), we have taken four spectra (600s each) with the 10.4m GTC (+ OSIRIS) at the Spanish Observatorio del Roque de los Muchachos (La Palma). The spectra, covering the range 4000-10000 A were taken starting 1.8 hr post burst, and reveal several absorption features, including CIV 1548-1550, Fe II 2344, Fe II 2383, Mg II 2796-2804 at a common redshift of 1.798. We therefore suggest this to be the redshift of GRB 120326A." This message can be quoted.
GCN 13119 table
GRB_name GRB120326A
GCN_number 13119
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13119 SUBJECT: GRB 120326A: T17 optical observations DATE: 12/03/26 17:43:42 GMT FROM: Veli-Pekka Hentunen at Taurus Hill Obs,A95 Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report: T17 (AstroCamp Observatory, Nerpio, Spain) CDK17 17 inch (0.43 m) f/6.8 and FLI ProLine CCD camera were used to detect GRB 120326A optical afterglow 1.7 hours after the burst trigger. The observations were started at 2012-03-26 02:54:48 (UT) and stopped at 2012-03-26 03:10:24 (UT). Six unfiltered observations with 120s exposure time were made. The afterglow was detected at following position RA 18:15:37.13 and DEC +69:15:35.6. The following magnitude was obtained from the observations using NOMAD1 1592-0145660 (R = 17.740) as the comparison: Tmid(sec)+T0 Filter Exp (sec) Mag Mag err Limit 6125 unfiltered 6x120 19.0 0.2 20.0 A jpg image of the observation is available at the following URL link: http://cutenews.kassiopeia.net/data/upimages/GRB120326A.png
GCN 13120 table
GRB_name GRB120326A
GCN_number 13120
Detection_method Swift-BAT Det
ra 273.9060°
decl 69.2480°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13120 SUBJECT: GRB 120326A: Swift-BAT refined analysis DATE: 12/03/26 18:04:01 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), T. Sakamoto (GSFC/UMBC), C. B. Markwardt (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), D. M. Palmer (LANL), G. Sato (ISAS), M. H. Siegel (PSU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 120326A (trigger #518626) (Siegel, et al., GCN Circ. 13105). The BAT ground-calculated position is RA, Dec = 273.906, 69.248 deg, which is RA(J2000) = 18h 15m 37.3s Dec(J2000) = +69d 14' 54.4" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 91%. The mask-weighted light curve shows a possible (2-sigma) precursor peak at ~T-105 sec, and two definite precursor peaks (~30 sec wide each) at ~T-60 sec and ~T-25 sec. The main FRED peak starts T_0, peaks at ~T+4 sec, and returns to background at ~T+20 sec. T90 (15-350 keV) is 69.6 +- 8.3 sec (estimated error including systematics). The time-averaged spectrum from T-67.90 to T+22.56 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.41 +- 0.34, and Epeak of 41.1 +- 6.9 keV (chi squared 55.8 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 2.6 +- 0.3 x 10^-6 erg/cm2 and the 1-sec peak flux measured from T+3.59 sec in the 15-150 keV band is 4.6 +- 0.2 ph/cm2/sec. A fit to a simple power law gives a photon index of 2.06 +- 0.07 (chi squared 68.4 for 57 d.o.f.). All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/518626/BA/
GCN 13121 table
GRB_name GRB120326A
GCN_number 13121
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13121 SUBJECT: GRB 120326A : LOT optical observation DATE: 12/03/27 00:34:38 GMT FROM: Yuji Urata at Nat. Central U. Y. Urata (NCU) and K.Y. Huang (ASIAA) on behalf of EAFON We observed the field of GRB 120326A (GCN 13105) in g, r, i, and z-bands with the Lulin 1m telescope operated by IANCU. The observation was started at 17.2 hrs after the GRB. The optical afterglow (GCN 13107, 13109, 13111) is clearly detected in all of the g,r,i,z-bands. The afterglow is still keeping the brightness around r = 19.0 (at 18.7 hrs after the GRB).
GCN 13122 table
GRB_name GRB120326A
GCN_number 13122
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13122 SUBJECT: GRB 120326A: optical observation of GMG DATE: 12/03/27 02:51:58 GMT FROM: Xiao-hong Zhao at Yunnan Obs X.-H. Zhao (YNAO), J. Mao (KASI/YNAO), D. Xu (WIS/NAOC), J.-M. Bai (YNAO) report on behalf of a larger collaboration: We observed the afterglow of GRB 120326A (Siegel et al., GCN 13105) with the 2.4m Gao-Mei-Gu (GMG) telescope. Observations started at 19:03:32 UT on 2012-3-26 (i.e., ~17.7 hrs after the burst) . We found the following magnitudes: Start time post-burst (hr) Exp. (s) Filter Magnitude (err) 17.7 300 R 18.7 (0.1) 17.8 300 V 18.7 (0.1) 17.9 300 B 19.4 (0.1) 18.0 300 R 18.8 (0.1) 18.1 300 V 18.8 (0.1) 18.2 300 B 19.5 (0.1) The magnitudes were calibrated with the NOMAD1 stars. Further observations are planned. We thank the GMG staff, especially W.-M. Yi, H. -Y. Gao and D. -Q. Wang for performing these observations. 2012-03-27 zhaoxiaohong78
GCN 13126 table
GRB_name GRB120326A
GCN_number 13126
Detection_method Optical
ra 273.9707°
decl 69.3063°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13126 SUBJECT: GRB 120326A: Maisoncelles Observatory optical observations DATE: 12/03/27 04:40:33 GMT FROM: Alain Klotz at CESR-CNRS Soulier J.-F. (Observatoire de Maisoncelles) reports the observation of the afterglow of GRB 120326A 19.7 hours after the GRB using a 30cm F/4 telescope at the Observatoire de Maisoncelles, France (IAU observatory code is C10). A CCD camera ST7XME and no filter were used. A stack of images shows clearly the presence of the afterglow that confirms the rebrightening mentioned by Gorosabel et al. (GCNC 13112): Tgrb + start end Rmag error 19.7h 20.7h 18.6 0.1 We used the star NOMAD1 1593-0145121 (ra,dec)=(273.9707306,+69.3063278) as reference R=15.32. Magnitudes are not corrected for galactic dust extinction.
GCN 13131 table
GRB_name GRB120326A
GCN_number 13131
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13131 SUBJECT: GRB120326A: TNT optical observation DATE: 12/03/27 06:52:51 GMT FROM: L.P. Xin at NAOC L.P. Xin, J. Y.Wei, Y.L. Qiu, J. Wang, J.S. Deng, C. Wu, X. H. Han on behalf of EAFON report: We began to observe GRB120326A (Siegel et al., GCN Circ. 13105) with Xinglong TNT telescope in R-band at 20:47:11.734 (UT), 19.45 hours after the burst. The optical counterpart (e.g. Klotz et al. GCN Cir 13107) was clearly detected with a brightness of 18.56 mag relatively to USNO B1.0 R2 mag Further observations are planed. This message may be cited. For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org:8080/grb/index.html We thank Liang Ma for performing these observations.
GCN 13136 table
GRB_name GRB120326A
GCN_number 13136
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13136 SUBJECT: GRB 120326A : SMA submm observation DATE: 12/03/27 10:37:17 GMT FROM: Yuji Urata at Nat. Central U. Y. Urata (NCU), K.Y. Huang, S. Takahashi (ASIAA), G. Petitpas (SMA) on behalf of EAFON We observed the field of GRB120326A(GCN 13105) using Sub-Millimeter Array (SMA). The observation in 219 GHz was started at 2012 Mar 26, 10:15 and ended at 21:10 (UT). Our preliminary analysis shows a radio counterpart at the position of optical afterglow(GCN 13107, 13109, 13111). The averaged flux density during the observation is 3.1 +/- 0.5 mJy. Further detail analysis and monitoring are ongoing.
GCN 13139 table
GRB_name GRB120326A
GCN_number 13139
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13139 SUBJECT: GRB 120326A: LOAO R-band Observations DATE: 12/03/27 13:20:38 GMT FROM: Minsung Jang at Seoul National U M. Jang, M. Im, (SNU), & Y. Urata (NCU) on behalf of EAFON We observed GRB 120326A (120326A et al., GCN 13105) in R-band with a 1 m telescope at Mt. Lemmon, Arizona, U.S. The obsevation started at 09:06:33 2012-03-26 UT, ~ 8 hours after the burst alert. We totally took 6 frames with 300 sec of exposure time and found a bright optical afterglow in each frame (Im et al. GCN 13117, Klotz et al. GCN 13107, Guidorzi et al. GCN 13111, Walker et al. GCN 13112, Dintinjana et al. GCN 13113, Kuin et al. GCN 13114). Preliminary photometry values are shown below. The R magnitudes were calibrated with three nearby USNO B1.0 stars, USNO-B1.0 1592-0143334, 1592-0143322, and 1592-0143349 Mid-time[sec] R-mag Err ================================ 27639 17.63 0.06 27964 17.53 0.04 28282 17.61 0.04 28601 17.84 0.03 28915 17.90 0.03 29239 18.08 0.03 We thank the LOAO operator, I. Baek for her assistance with this observation.
GCN 13142 table
GRB_name GRB120326A
GCN_number 13142
Detection_method Optical
ra 18.0000°
decl 69.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13142 SUBJECT: Subject:GRB 120326A: Bassano Bresciano Observatory optical observations DATE: 12/03/27 17:05:07 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: We imaged the field of GRB 120326A detected by SWIFT (trigger 518626) Goad et al (GCNC 13110), with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory (member of ISSP), Italy. The observations had started 19h 58m and ended 26h 08m after the GRB trigger,with our schmidt telescope D=320 mm F/D=3.1. Weather conditions were good. We co-added some series of 20 exposures of 120s takings for the whole night between 26 and 27 March 2012. We detected clearly the presence of the optical couterpart (e.g. Klotz et al. GCNC 13107) that confirms the rebrightening mentioned by Gorosabel et al.(GCNC 13112), at the following position: RA (J2000) = 18 15 37.19 DEC(J2000) = +69 15 35.5 The CCD unfiltered magnitude during all through the observations has been 18.7 (+/- 0.2) The magnitude has nearly been constant during this period. Magnitudes were estimated with the UCAC-3 catalog and are not corrected for galactic dust extinction. Lightcurve analisis is in progress, further observations are planed. This message may be cited.
GCN 13143 table
GRB_name GRB120326A
GCN_number 13143
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 13143 SUBJECT: GRB 120326A: PAIRITEL NIR Observations DATE: 12/03/27 18:22:24 GMT FROM: Adam Morgan at U.C. Berkeley A. N. Morgan (UC Berkeley) reports: We observed the field of GRB 120326A (Siegel et al., GCN 13105) with the 1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at 2012-03-27 09:25:19 UT, ~32.1 hours after the Swift Trigger. In mosaics (effective exposure time of 1.31 hours) taken simultaneously in the J, H, and Ks filters, we detect a source at the optical afterglow location (Klotz et al., GCN 13107; LaCluyze et al., GCN 13109; Guidorzi et al., GCN 13111; Walker et al., GCN 13112; Kuin et al., GCN 13114; Im et al., GCN 13117; Hentunen et al., GCN 13119; Urata et al., GCN 13121; Zhao et al., GCN 13122; Soulier, GCN 13126; Jang et al., GCN 13139; Quadri et al., GCN 13142). The preliminary photometry yields: post burst t_mid (hr) exp.(hr) filt mag m_err 33.58 1.31 J 17.5 0.1 33.58 1.31 H 16.7 0.1 33.58 1.31 Ks 16.0 0.2 All magnitudes are given in the Vega system, calibrated to 2MASS. No correction for Galactic extinction has been made to the above reported values. Further observations are ongoing.
GCN 13145 table
GRB_name GRB120326A
GCN_number 13145
Detection_method Fermi GBM Det
t_trigger 1:20:31.510 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 13145 SUBJECT: GRB 120326A: Fermi GBM Observation DATE: 12/03/27 21:47:34 GMT FROM: Andrew Collazzi at NASA/MSFC/ORAU Andrew C. Collazzi (NASA/ORAU) reports on behalf of the Fermi GBM Team: "At 01:20:31.51 UT on March 26, 2012, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 120326A (trigger 354417633 / 120326056) which was triggered and detected by Swift (Siegel et al., GCN 13105). The on-ground calculated location, using the Fermi GBM trigger data, is consistent with the locations seen by Swift. The GBM light curve shows a single FRED-like event with a duration (T90) of about 12 s (50-300 keV). The time-averaged spectrum from T0-3.584 to T0+13.824 s is fit equally well by a Band and Comptonized Power Law function. For the Band function, the parameters are: Epeak = 46.45 +/- 3.67 keV, alpha = -0.98 +/- 0.14, and beta = -2.53 +/- 0.15. This results in a 1-s peak flux of 3.10 +/- 0.05 ph/s-cm^2 and a yields a fluence (10-1000 keV) in this time interval of (3.539 +/- 0.174)E-06 erg/cm^2. The C-Stat for this fit is 653.15 over 489 degrees of freedom. For the Comptonized function, the parameters are: Epeak = 55.46 +/- 2.61 keV, and alpha = -1.21 +/- 0.08. This results in a 1-s peak flux of 3.08 +/- 0.05 ph/s-cm^2. Which yields a fluence (10-1000 kev) in this time interval of (3.027 +/- 0.091)E-06 erg/s-cm^2. The C-Stat for this fit is 654.83 over 490 degrees of freedom. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 13149 table
GRB_name GRB120326A
GCN_number 13149
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13149 SUBJECT: GRB 120326A: Xinglong TNT further optical observation DATE: 12/03/28 04:52:23 GMT FROM: L.P. Xin at NAOC L.P. Xin, J. Y.Wei, Y.L. Qiu, J. Wang, J.S. Deng, C. Wu, X. H. Han on behalf of EAFON report: We began to reobserve GRB120326A (Siegel et al., GCN Circ. 13105) with Xinglong TNT telescope in R-band at 20:30:50.7 (UT), Mar. 28th 2012. 43.7 hours after the burst. The optical counterpart (e.g. Klotz et al. GCN Cir 13107) was still clearly detected with a brightness of R=19.32 mag, relatively to USNO B1.0 R2 mag. Comparing to the observation last time (Xin et al. GCN Cir. 13131), the brightness decayed by a magnitude of 0.76 mag during these two epoch. Further observations are planed. This message may be cited. For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org:8080/grb/index.html We thank Chunlan Lu for performing these observations. xlp@bao.ac.cn
GCN 13150 table
GRB_name GRB120326A
GCN_number 13150
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 13150 SUBJECT: GRB 120326A: Xinglong TNT further optical observationcorrection for GCN Cir 13149) DATE: 12/03/28 05:00:57 GMT FROM: L.P. Xin at NAOC L.P. Xin, J. Y.Wei, Y.L. Qiu, J. Wang, J.S. Deng, C. Wu, X. H. Han on behalf of EAFON report: We began to reobserve GRB120326A (Siegel et al., GCN Circ. 13105) with Xinglong TNT telescope in R-band at 20:30:50.7 (UT), Mar. 27th 2012. 43.7 hours after the burst. The optical counterpart (e.g. Klotz et al. GCN Cir 13107) was still clearly detected with a brightness of R=19.32 mag, relatively to USNO B1.0 R2 mag. Comparing to the observation last time (Xin et al. GCN Cir. 13131), the brightness decayed by a magnitude of 0.76 mag during these two epoch. Further observations are planed. This message may be cited. For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org:8080/grb/index.html We thank Chunlan Lu for performing these observations.
GCN 13155 table
GRB_name GRB120326A
GCN_number 13155
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 13155 SUBJECT: GRB 120326A: MITSuME Ishigakijima Optical Observation DATE: 12/03/28 14:19:34 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ), K. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 120326A (Siegel et al., GCNC 13105) with the optical three color (g', Rc and Ic) CCD camera attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory. The observation started on 2012-03-27 16:59:18 UT (~1.65 days after the burst). We detected the previously reported afterglow (Klotz et al., GCNC 13107; Guidorzi, GCNC 13111) in g' and Rc bands. Photometric results of the OT are listed below. We used GSC2.3 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' g'_err Rc Rc_err Ic ---------------------------------------------------------------------- 1.68494 17:46:48 960.0 20.3 0.2 19.9 0.2 >18.93 ---------------------------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 13160 table
GRB_name GRB120326A
GCN_number 13160
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13160 SUBJECT: GRB 120326A: Bassano Bresciano Observatory further optical observations DATE: 12/03/28 15:32:32 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: We reobserved GRB120326A (see GCNC 13142) with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory (member of ISSP), Italy. We began on 2012/03/27.988 - 46.4 hours after the burst. and finished on 2012/03/28.117 - 49.5 hours after the burst. We co-added a series of 80 exposures (120s each) takings for whole night between 27 and 28 March 2012. The afterglow was still detected. Unfiltered magnitude was decreasing from 19.1 (+/-0.1) to 19.7 (+/-0.1) during this period. Weather conditions were good. Magnitudes were estimated with the UCAC-3 catalog and are not corrected for galactic dust extinction. Lightcurve analisis is in progress, further observations are planed. This message may be cited.
GCN 13170 table
GRB_name GRB120326A
GCN_number 13170
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 13170 SUBJECT: GRB 120326A: MITSuME Ishigakijima Optical Observation at 2 days afterthe burst DATE: 12/03/29 14:07:35 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ), K. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 120326A (Siegel et al., GCNC 13105) with the optical three color (g', Rc and Ic) CCD camera attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory. The observation started on 2012-03-28 15:12:13 UT (~2.58 days after the burst). We detected the previously reported afterglow (Klotz et al., GCNC 13107; Guidorzi, GCNC 13111; Kuroda et al., GCNC 13155) in g' and Rc bands. Photometric results of the OT are listed below. We used GSC2.3 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' g'_err Rc Rc_err Ic ---------------------------------------------------------------------- 2.61348 16:03:53 1620.0 20.0 0.2 20.1 0.2 >18.9 ---------------------------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 13172 table
GRB_name GRB120326A
GCN_number 13172
Detection_method Optical
ra 18.0000°
decl 69.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13172 SUBJECT: GRB 120326A: Bassano Bresciano Observatory optical observations DATE: 12/03/29 15:10:35 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: We imaged the field of GRB 120326A detected by SWIFT (trigger 518626) Goad et al (GCNC 13110), with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory (member of ISSP), Italy. The observations had started 19h 58m and ended 26h 08m after the GRB trigger,with our schmidt telescope D=320 mm F/D=3.1. Weather conditions were good. We co-added some series of 20 exposures of 120s takings for the whole night between 26 and 27 March 2012. We detected clearly the presence of the optical couterpart (e.g. Klotz et al. GCNC 13107) that confirms the rebrightening mentioned by Gorosabel et al.(GCNC 13112), at the following position: RA (J2000) = 18 15 37.19 DEC(J2000) = +69 15 35.5 The CCD unfiltered magnitude during all through the observations has been 18.7 (+/- 0.2) The magnitude has nearly been constant during this period. Magnitudes were estimated with the UCAC-3 catalog and are not corrected for galactic dust extinction. Lightcurve analisis is in progress, further observations are planed. This message may be cited.
GCN 13175 table
GRB_name GRB120326A
GCN_number 13175
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13175 SUBJECT: GRB 120326A: CARMA 3mm detection DATE: 12/03/31 01:42:24 GMT FROM: Daniel Perley at Caltech D. A. Perley (Caltech), K. Alatalo (UCB), and A. Horesh (Caltech) report: We observed the position of GRB 120326A (Siegel et al., GCN 13105) with the Combined Array for Research in Millimeter-Wave Astronomy (CARMA) at a frequency of 92.5 GHz (3 mm) between 13:33 and 15:19 UT on 2012-03-30. A bright point source is observed consistent with the X-ray and optical positions (Goad et al., GCN 13110; Klotz et al., GCN 13107; Guidorzi et al., GCN 13111), at (J2000): 18:15:37.14 +69:15:35.07 (+/- 0.4") We measure a flux density of 3.2 +/- 0.4 mJy at the mean time of t = 4.55 days after the GRB trigger.
GCN 13176 table
GRB_name GRB120326A
GCN_number 13176
Detection_method Suzaku WAM Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 13176 SUBJECT: GRB 120326A : Suzaku WAM observation of the prompt emission DATE: 12/03/31 06:18:03 GMT FROM: Makoto Tashiro at Saitama U/Swift W. Iwakiri, M. Tashiro, Y. Terada, T. Yasuda, K. Takahara, M. Asahina, S. Kobayashi, A. Sakamoto (Saitama U.), Y. Hanabata, T. Uehara, T. Kawano, K. Takaki, M. Mizuno, M. Ohno, Y. Fukazawa (Hiroshima U.), S. Sugita (Nagoya U.), K. Yamaoka (Aoyama Gakuin U.), M. Kokubun, T. Takahashi (ISAS/JAXA), Y. E. Nakagawa (Waseda U.), N. Ohmori, M. Akiyama, M. Yamauchi (Univ. of Miyazaki), Y. Urata, P. Tsai (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo), on behalf of the Suzaku WAM team, report: The long GRB 120326A (Swift/BAT trigger #518626 ; Siegel et al., GCN 13105) triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 01:20:31.907 UT (=T0). The observed light curve shows a single peak starting at T0-5 s, ending at T0+10 s, with a duration (T90) of about 9 seconds. The fluence in 100 - 1000 keV was 1.61(+/-0.26) x 10^-6 erg/cm^2. The 1-s peak flux measured from T0+3 s was 0.61(-0.44, +0.40) photons/cm^2/s in the same energy range. Preliminary result shows that the time-averaged spectrum from T0-5 s to T0+10 s is well fitted by a single power-law with a photon index of 2.14 (-0.31, 0.45) (chi2/d.o.f = 11.1/14). All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included. The light curves for this burst will be available at: http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html
GCN 13177 table
GRB_name GRB120326A
GCN_number 13177
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 13177 SUBJECT: GRB 120326A: MITSuME Ishigakijima Optical Observation at 3 days afterthe burst DATE: 12/03/31 10:23:14 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ), K. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 120326A (Siegel et al., GCNC 13105) with the optical three color (g', Rc and Ic) CCD camera attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory. The observation started on 2012-03-29 17:40:10 UT (~3.68 days after the burst). We detected the previously reported afterglow (Klotz et al., GCNC 13107; Guidorzi, GCNC 13111; Kuroda et al., GCNC 13155, 13170) in all the three bands. Photometric results of the OT are listed below. We used GSC2.3 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' g'_err Rc Rc_err Ic Ic_err ---------------------------------------------------------------------- 3.71188 18:25:35 4320.0 20.9 0.2 20.8 0.2 19.7 0.3 ---------------------------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 13178 table
GRB_name GRB120326A
GCN_number 13178
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13178 SUBJECT: GRB 120326A: Bassano Bresciano Observatory lightcurve analisis DATE: 12/03/31 10:31:25 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: Photometric optical measurements of GRB 120326A detected by SWIFT (trigger 518626) M. H. Siegel et al (GCNC 13105) have been done using the Schmidt telescope 0.32m F/3.1 and Starlight CCD camera HX-516 applied at direct focus. 120 sec. exposure time and 2x2 binning were used for all photos. All exposure were unfiltered. Every night flat field and dark have been captured and all images were corrected with them. In order to capture faint objects 60 shots was added before measurement MPO Canopus version 10.4.0.20 was used to perform differential photometry on the reduced images. began of period: 2012/03/26.945 - 21.3 hours after the burst. end of period: 2012/03/29.103 - 73.1 hours after the burst. ----------------- GSC1.2 STARS USED ----------------- ID: 0442901998 ID: 0442901953 ID: 0442902070 ID: 0442901970 The photometric results as follow: ------------------------- Date UTC Mag. ------------------------- 2012 03 26.94456 18.75 2012 03 26.96648 18.70 2012 03 26.98842 18.70 2012 03 27.01038 18.80 2012 03 27.03232 18.70 2012 03 27.05427 18.80 2012 03 27.07624 19.85 2012 03 27.10038 19.95 2012 03 28.03167 19.30 2012 03 28.05361 19.48 2012 03 28.05362 19.41 2012 03 28.07558 19.52 2012 03 29.02885 19.77 2012 03 29.04972 19.91 2012 03 29.07231 19.93 2012 03 29.09504 20.00 2012 03 29.10332 19.98 ------------------------- Images and analisis are available at the following address: http://www.osservatoriobassano.org/archivio/grb/GRB120326A-Trig-518626-2012-03-26.htm This message may be cited.
GCN 13181 table
GRB_name GRB120326A
GCN_number 13181
Detection_method VLA Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 13181 SUBJECT: GRB 120326A: EVLA Observations DATE: 12/03/31 23:12:27 GMT FROM: Tanmoy Laskar at Harvard U T. Laskar, A. Zauderer, and E. Berger (Harvard) report: "We observed the position of GRB 120326A (GCN 13105) with the EVLA at a mean frequency of 21.9 GHz starting on 2012 March 31.51 UT (5.45 days after the burst). We detect a radio counterpart consistent with the Swift-XRT position (Goad et al., GCN 13110), the optical position (Klotz et al., GCN 13107; Guidorzi et al., GCN 13111; Kuin et al., GCN 13114), and the CARMA 3 mm position (Perley et al., GCN 13175) with a flux density of 1.36 mJy. Further observations are planned."
GCN 13185 table
GRB_name GRB120326A
GCN_number 13185
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 13185 SUBJECT: GRB 120326A: HCT optical observations DATE: 12/04/01 11:06:15 GMT FROM: D.K. Sahu at Indian Inst of Astrophysics,Bangalore D.K. Sahu, G.C. Anupama (Indian Institute of Astrophysics, Bangalore) and S.B. Pandey (ARIES, Nainital) report. The optical afterglow of GRB 120326A (Siegel et al., GCN 13105) was observed in Bessell R band, with the 2m. Himalayan Chandra Telescope of the Indian Astronomical Observatory, Hanle, India. Observations were made between 22:36 UT and 23:14 UT on 27/03/2012. The optical afterglow was detected in our individual frames of 300sec each. The preliminary R magnitudes of the optical afterglow calibrated using nearby USNO B1.0 stars is as under: ------------------------------------------------------------------ Date Mid UT Mid time from Exp. R Magnitude GRB(hrs) (sec) ------------------------------------------------------------------ 23-03-2012 22:55 45.5750 5x300 19.68 +/-0.07 -------------------------------------------------------------------
GCN 13189 table
GRB_name GRB120326A
GCN_number 13189
Detection_method Optical
ra 18.0000°
decl 69.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13189 SUBJECT: GRB 120326A: Cima Rest and Bassano Brescia DATE: 12/04/02 11:44:42 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs M.Tonincelli, G.Arici (Cima Rest obs.) U.Quadri, L.Strabla, R.Girelli and A.Quadri (Bassano Bresciano Obs.) report: We imaged the field of GRB 120326A detected by SWIFT (trigger 518626) Goad et al (GCNC 13110), with the telescope D=508 mm F/D=5 of Cima Rest Observatory (IAU station B11), Italy during a collaboration with Bassano Bresciano Observatory (IAU station 565), Italy The observations: had started 5d 19h 49m after the burst (2012-03-31 at 21h 08m UTC) and ended 6d 00h 33m after the burst (2012-04-01 at 01h 51m UTC) We co-added 40 exposures of 300s each. We detected very faint optical couterpart of 21.8 (+/- 0.1) unfiltered CCD magnitude. at the following coordinates: RA (J2000) = 18 15 37.03 DEC(J2000) = +69 15 35.1 Magnitudes were estimated using USNO-B1.0 catalog and are not corrected for galactic dust extinction. This message may be cited.
GCN 13192 table
GRB_name GRB120326A
GCN_number 13192
Detection_method correction
Circular_text TITLE: GCN CIRCULAR NUMBER: 13192 SUBJECT: GRB 120326A: Bassano Bresciano Observatory - correction for GCN Cir 13178 DATE: 12/04/03 08:49:33 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: Photometric optical measurements of GRB 120326A detected by SWIFT (trigger 518626) M. H. Siegel et al (GCNC 13105) have been done using the Schmidt telescope 0.32m F/3.1 and Starlight CCD camera HX-516 applied at direct focus. 120 sec. exposure time and 2x2 binning were used for all photos. All exposure were unfiltered. Every night flat field and dark have been captured and all images were corrected with them. In order to capture faint objects 60 shots was added before measurement MPO Canopus version 10.4.0.20 was used to perform differential photometry on the reduced images. began of period: 2012/03/26.945 - 21.3 hours after the burst. end of period: 2012/03/29.103 - 73.1 hours after the burst. ----------------- GSC1.2 STARS USED ----------------- ID: 0442901998 ID: 0442901953 ID: 0442902070 ID: 0442901970 The photometric results as follow: ------------------------- Date UTC Mag. ------------------------- 2012 03 26.94456 18.75 2012 03 26.96648 18.70 2012 03 26.98842 18.70 2012 03 27.01038 18.80 2012 03 27.03232 18.70 2012 03 27.05427 18.80 2012 03 27.07624 18.85 2012 03 27.10038 18.95 2012 03 28.03167 19.30 2012 03 28.05361 19.48 2012 03 28.05362 19.41 2012 03 28.07558 19.52 2012 03 29.02885 19.77 2012 03 29.04972 19.91 2012 03 29.07231 19.93 2012 03 29.09504 20.00 2012 03 29.10332 19.98 ------------------------- Images and analisis are available at the following address: http://www.osservatoriobassano.org/archivio/grb/GRB120326A-Trig-518626-2012-03-26.htm This message may be cited. [GCN OPS NOTE(24dec12): See their correction Circular 13192.]
GCN 13201 table
GRB_name GRB120326A
GCN_number 13201
Detection_method Other
ra 273.9045°
decl 69.2600°
Circular_text TITLE: GCN CIRCULAR NUMBER: 13201 SUBJECT: GRB 120326A, the review of the sky area in plate archives DATE: 12/04/03 19:56:27 GMT FROM: Valentyna Golovnya at Main Astro Obs,Kyiv V. Golovnya, L. Kizyun (Main Astronomical Observatory, Kyiv) report: We have undertaken the review of the sky area in vicinity of GRB 120326AA (M.R. Goad et al., GCN Circ.13110) on astronegatives, collected in Ukrainian NAS Main astronomical observatory plate archive (1976-1996). All the plates with the possible object appearance are digitized using Microtek ScanMaker 9800XL TMA and Epson Expression 10000XL flatbed scanners and have been placed into Golosiiv Plate Archive database DBGPA with open access to them. The list of plates is given in the table: YYYYMMDD/TimeUT --Plates-- Ex. LimM Star USNOA2 19860529/234300 GUA040C000924A 18 14.90 1575-03932397 19860531/232820 GUA040C000931 25 15.65 1575-03932513 19860710/175702 TAS040A000019B 45 17.90 1575-03933870 19860710/175706 TAS040B000020 45 17.95 1575-03933903 19860716/205409 GUA040C000960 16 15.85 1575-03934841 19940726/200551 GUA040C002347 18 15.45 1575-03933972 Plates: GUA040C the plates archive identifier of DWA (D/F=400/2000, M=103"/mm) of the Ukrainian NAS Main Astro obs. (Marsden's number - 83) the plate number [1]. TAS040A,-the plates archive identifier of DAZ (D/F=400/3000, TAS040B M=68.8"/mm) of the Tashkent Astro obs. (Marsden's number - 186) the plate number [1]. Ex. - Duration of the maximum exposure (minutes). LimM - Limited V mag, derived in the 15 minutes area around the location given in M.R.Goad et al. GCN Circ.13110: RA(J2000): 18h 15m 37.08s, Dec(J2000): +69d 15' 35.9" Star USNOA2 - Comparison star. The preview images of 6 areas together with the 35x15 min.of arc area from SkyMap can be found in http://gua.db.ukr-vo.org/img/grb/120326A/index.html The images with full resolution are available via e-mail on demand. References: 1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org