GRB131030A

This page lists all entries on GRB131030A in GRBweb

Summary IPN Swift GCN 15402 GCN 15403 GCN 15405 GCN 15406 GCN 15407 GCN 15408 GCN 15410 GCN 15411 GCN 15412 GCN 15413 GCN 15414 GCN 15416 GCN 15417 GCN 15418 GCN 15419 GCN 15420 GCN 15423 GCN 15425 GCN 15427 GCN 15430 GCN 15432 GCN 15435 GCN 15436 GCN 15444 GCN 15456 GCN 15462 GCN 15463 GCN 15481 GCN 15501

Summary table
Variable Value Source
T0 20:56:17.811 UTC GCN_circulars,Konus-Wind Det
ra 345.0673° Swift
decl -5.3681° Swift
pos_error 6.47e-05° Swift
T90 41.1 s Swift
T90_start 20:56:18 UTC Swift
fluence 2.90e-05 erg/cm² Swift
redshift 1.2930 GCN_circulars,Optical
T100 41.289 s
GBM_located False
mjd 56595.87242836806 GCN_circulars,Konus-Wind Det
IPN table
GRB_name GRB131030A
ra 345.0792°
decl -5.3833°
pos_error 5.00e-02°
redshift 1.2950
Swift table
GRB_name GRB131030A
t_trigger 20:56:18 UTC
ra 345.0673°
decl -5.3681°
pos_error 6.47e-05°
T90 41.1 s
fluence 2.90e-05 erg/cm²
redshift 1.2930
GCN 15402 table
GRB_name GRB131030A
GCN_number 15402
Detection_method Swift Det
t_trigger 20:56:18 UTC
ra 345.0800°
decl -5.3890°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15402 SUBJECT: GRB 131030A: Swift detection of a burst with an optical counterpart DATE: 13/10/30 21:08:51 GMT FROM: David Palmer at LANL E. Troja (NASA/GSFC/UMCP), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), V. Mangano (PSU), C. B. Markwardt (NASA/GSFC), A. Maselli (INAF-IASFPA), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU), B. Sbarufatti (INAF-OAB/PSU), C. A. Swenson (PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team: At 20:56:18 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 131030A (trigger=576238). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 345.080, -5.389 which is RA(J2000) = 23h 00m 19s Dec(J2000) = -05d 23' 20" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed multiple peaks structure with a duration of about 45 sec. The peak count rate was ~31500 counts/sec (15-350 keV), at ~6 sec after the trigger. The XRT began observing the field at 20:57:37.1 UT, 78.4 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 345.0657, -5.3659 which is equivalent to: RA(J2000) = +23h 00m 15.77s Dec(J2000) = -05d 21' 57.2" with an uncertainty of 5.1 arcseconds (radius, 90% containment). This location is 97 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy. The initial flux in the 0.1 s image was 5.43e-08 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 89 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 23:00:16.13 = 345.06720 DEC(J2000) = -05:22:05.1 = -5.36808 with a 90%-confidence error radius of about 0.74 arc sec. This position is 9.5 arc sec. from the center of the XRT error circle. The estimated magnitude is 14.97 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.06. Burst Advocate for this burst is E. Troja (eleonora.troja AT nasa.gov). 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 15403 table
GRB_name GRB131030A
GCN_number 15403
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15403 SUBJECT: GRB 131030A: Watcher OT detection DATE: 13/10/30 21:54:06 GMT FROM: Petr Kubanek at AIO Petr Kubánek (Porsche Engineering Services s.r.o. & Institute of Physics, Czech Republic), Martin Topinka, Lorraine Hanhol, Seamus Meehan (UCD, Ireland) reports on behalf of wider collaboration: Watcher telescope at Boyden Observatory, South Africa, running RTS2 observatory control system, started automatic observation of GRB 131030A (GCN 15402, E.Troja et.al.) at 20:57:24.070 UT. On image acquired on 20:58:49.830 UT, e.g. 171s post GRB, we clearly identify optical counterpart mentioned at the above GCN. Futher observations, as well as analysis, are ongoing.
GCN 15405 table
GRB_name GRB131030A
GCN_number 15405
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15405 SUBJECT: GRB 131030A: MASTER optical observation DATE: 13/10/30 22:07:29 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, D. Denisenko, V. Kornilov, A. Kuznetsov, D. Kuvshinov, N. Tyurina, N. Shatskiy, P. Balanutsa, D. Zimnukhov, V.V. Chazov Lomonosov Moscow State University, Sternberg Astronomical Institute A. Tlatov, A.V. Parhomenko, D. Dormidontov, V. Sennik Kislovodsk Solar Station of the Pulkovo Observatory K. Ivanov, S. Yazev, N.M. Budnev, O. Gres, O. Chuvalaev, V.A. Poleshchuk Irkutsk State University V. Yurkov, Yu. Sergienko, D. Varda, E. Sinyakov Blagoveschensk Educational State University, Blagoveschensk V. Krushinski, I. Zalozhnich, A. Popov, A. Bourdanov Ural Federal University H. Levato and C. Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) C. Mallamaci, C. Lopez and F. Podest Observatorio Astronomico Felix Aguilar (OAFA) MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB131030A 50 min (3000s) after GRB time at 2013-10-30 21-46-10.273 UT. On our first (180 sec) images we found optical transient within SWIFT error-box (E. Troja et. al GCN15402). The unfiltred magnitude is 16.5; The 5-sigma upper limit has been about 19.0 mag. So long pointing time was due to with daily power cut on the observatory. The message may be cited.
GCN 15406 table
GRB_name GRB131030A
GCN_number 15406
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15406 SUBJECT: GRB 131030A - Liverpool Telescope Optical Afterglow Confirmation DATE: 13/10/30 22:17:57 GMT FROM: Carole Mundell at ARI, JMU,Liverpool F.J. Virgili, C.G. Mundell (LJMU), J. Japelj, A. Gomboc (U. Ljubljana), R.J. Smith (LJMU), A. Melandri (INAF-OAB) report: The 2-m Liverpool Telescope robotically followed up GRB 131030A (Swift Trigger 576238; Troja et al. GCN 15402) immediately after the GRB trigger time. The automated procedure detected an uncatalogued source at the location of the UVOT source. We confirm the fading nature of the object with R = 16.9 0.2 mag (vs. USNOB1) 34.8 min after the burst. thereby confirming this as the GRB afterglow. Observations and analysis are ongoing.
GCN 15407 table
GRB_name GRB131030A
GCN_number 15407
Detection_method Optical
redshift 1.2930
Circular_text TITLE: GCN CIRCULAR NUMBER: 15407 SUBJECT: GRB 131030A: NOT redshift DATE: 13/10/30 22:48:32 GMT FROM: Dong Xu at DARK/NBI D. Xu, J. P. U. Fynbo (DARK/NBI), P. Jakobsson, Z. Cano (U. Iceland), B. Milvang-Jensen, D. Malesani (DARK/NBI), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI) & M. Hayes (Stockholm University) report on behalf of a larger collaboration: We observed the optical afterglow of GRB 131030A (Troja et al., GCN 15402) with the NOT equipped with the AlFOSC instrument. The transient is clearly detected in our acquisition image with a magnitude R ~ 17 at a mean time of 0.569 hr after the GRB. A single spectrum of 1200 s covering the range from 3800 to 8000 AA was obtained with a mean epoch of 0.894 hr after the burst. The spectrum displays a strong continuum with features of Fe II, Mg II and Al II at a common redshift of z = 1.293 (wavelength calibration based on archival data), which we identify as the redshift of the GRB. We also detect an intervening system at z = 1.16 displaying Fe II and Mg II.
GCN 15408 table
GRB_name GRB131030A
GCN_number 15408
Detection_method Other
redshift 1.2950
Circular_text TITLE: GCN CIRCULAR NUMBER: 15408 SUBJECT: GRB 131030A: Spectroscopy from 10.4m GTC DATE: 13/10/30 22:51:59 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), C.C. Thoene (IAA-CSIC), R. Sanchez-Ramirez (IAA-CSIC), J. Gorosabel (IAA-CSIC), J.P.U. Fynbo (DARK/NBI), N.R. Tanvir (U. Leicester) and C.A. Alvarez Iglesias (ULL/IAC) report on behalf of a larger collaboration: We have observed the afterglow of GRB131030A (Troja et al. GCN 15402) with the 10.4m GTC telescope at Roque de los Muchachos Observatory (Spain) starting at 21:50 UT (54 min after the burst). We used the R2000B grism that covers the range from 3950 to 5700 A at a resolution of ~2200. A single 600s exposure reduced with archive calibrations shows a strong trace with absorption features of AlIII, ZnII, CrII, NiII, FeII, NiII* and FeII* at a common redshift of z=1.295, which we identify as the redshift of the GRB. An additional intervening system is seen at z=1.164, with lines of AlIII, FeII and MnII.
GCN 15410 table
GRB_name GRB131030A
GCN_number 15410
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15410 SUBJECT: GRB 131030A: D50+BART detection and light curve optical decay DATE: 13/10/31 01:31:14 GMT FROM: Jan Strobl at AI AS CR,Ondrejov Jan Strobl (1,3), Martin Jelinek (2), Cyril Polasek (1), Michal Jakubec (1), Petr Skala (1,3) and Rene Hudec (1,3) (1. AI ASCR Ondrejov, 2. IAA CSIC Granada, 3. FEE CTU Prague) We observed the field of the Swift GRB 131030A (Troja et al., GCNC 15402) with the 0.5m telescope D50 and 0.25m telescope BART in Ondrejov (Czech Republic), starting at 20:57:16 UT, i.e. 56s after the trigger. The optical afterglow (Virgili et al, GCNC 15406) is clearly detected in our images. After an initial peak of about 13.8m (unfiltered, calibrated using USNO-B R-band) the lightcurve decays with \alpha~0.9. This message can be cited.
GCN 15411 table
GRB_name GRB131030A
GCN_number 15411
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15411 SUBJECT: GRB 131030A: 1.23m CAHA BVRI-band observations DATE: 13/10/31 02:14:28 GMT FROM: Javier Gorosabel at IAA-CSIC V. Terron (IAA/CSIC), M. Fernandez (IAA/CSIC), J. Gorosabel (IAA/CSIC-UPV/EHU), report on behalf of a larger collaboration: We imaged the GRB131030A (GCNC 15402) optical afterglow (GCNC 15403, 15405, 14506, 15410) with the 1.23m CAHA telescope. Two BVRI-band series were taken starting 2.01 hr post burst. The optical afterglow is well detected in the four bands at a level of R~18.0 (Vega), calibrated against the USNO B1.0 catalog.
GCN 15412 table
GRB_name GRB131030A
GCN_number 15412
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15412 SUBJECT: GRB 131030A: SAO RAS optical observations DATE: 13/10/31 10:36:52 GMT FROM: Vladimir Sokolov at SAO RAS A. S. Moskvitin, reports on behalf of SAO RAS GRB follow-up team: We observed the field of GRB 131030A (Troja et al., GCN#15402) with the 1-meter telescope Zeiss-1000 of Special Astrophysical Observatory of RAS in four bands: B, V, Rc, Ic. Observations were started since 23 minutes after the Swift trigger. The weather conditions were excellent, but the air masses of the object was about 3-6. Optical counterpart was clearly detected at all images. Preliminary results of Rc band photometry are as following: T_mid, UT T - T0, h exposure, s R mag +/- error 21:18:45 0.374 60 16.55 +/- 0.02 21:34:05 0.630 60 17.09 +/- 0.03 21:44:14 0.799 120 17.26 +/- 0.02 21:56:27 1.003 120 17.39 +/- 0.03 22:07:26 1.186 120 17.53 +/- 0.03 22:21:30 1.420 360 17.63 +/- 0.02 22:30:08 1.564 480 17.69 +/- 0.03 The magnitudes were calibrated against the set of USNO B1 stars (R2) and not corrected for the Galaxy extinction. Rc band light curve and the first image is shown at ftp://ftp.sao.ru/pub/grb/GRB131030A/GRB131030A_image_LC.jpg
GCN 15413 table
GRB_name GRB131030A
GCN_number 15413
Detection_method Konus-Wind Det
t_trigger 20:56:17.811 UTC
redshift 1.2930
Circular_text TITLE: GCN CIRCULAR NUMBER: 15413 SUBJECT: Konus-Wind observation of GRB 131030A DATE: 13/10/31 10:40:11 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report: The long-duration GRB 131030A (Swift-BAT trigger 576238: Troja, et al., GCN 15402) triggered Konus-Wind at T0=75377.811 s UT (20:56:17.811). The burst light curve shows a multi-peaked pulse from ~T0-3 s till ~T0+25 s. The emission is seen up to ~10 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB131030_T75377/ As observed by Konus-Wind, the burst had a fluence of (6.6 0.4)x10-5 erg/cm2, and a 64-ms peak flux, measured from T0+11.648 s, of (1.0 0.1)x10-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum (measured from T0 to T0+27.904 s) is best fit in the 20 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.71 0.12, the high energy photon index beta = -2.95 0.28, the peak energy Ep = 177 10 keV, chi2 = 76/96 dof. Assuming the redshift z=1.293 (Xu, et al., GCN 15407; de Ugarte Postigo, et al., GCN 15408), and a standard cosmology model with H_0 = 70 km/s/Mpc, Omega_M = 0.27, and Omega_Lambda = 0.73, we estimate the following rest-frame parameters: the isotropic energy release E_iso is (3.0 0.2)x10^53 erg, the peak luminosity L_iso is (1.0 0.1)x10^53 erg/s, and the rest-frame peak energy Ep,i = (406 22) keV All the quoted values are preliminary.
GCN 15414 table
GRB_name GRB131030A
GCN_number 15414
Detection_method Swift-UVOT Det
ra 345.0673°
decl -5.3681°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15414 SUBJECT: GRB 131030A: Swift/UVOT Detection DATE: 13/10/31 11:46:48 GMT FROM: Alice Breeveld at MSSL-UCL A. A. Breeveld (UCL-MSSL) and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 131030A 90 s after the BAT trigger (Troja et al., GCN Circ. 15402). A fading source consistent with the XRT position (Troja et al. GCN Circ. 15402) is clearly detected in the initial UVOT exposures. The preliminary UVOT position is: RA (J2000) = 23:00:16.14 = 345.06723 (deg.) Dec (J2000) = -05:22:05.2 = -5.36811 (deg.) with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence). Preliminary detections using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the finding chart (FC) and other early exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 90 239 148 14.87 0.02 white 582 601 20 16.13 0.05 u_FC 302 552 246 15.30 0.03 b 557 577 20 16.30 0.08 v 631 651 19 15.98 0.13 uvw1 681 701 19 16.42 0.17 uvm2 656 676 20 16.63 0.24 uvw2 606 626 20 17.97 0.36 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.06 in the direction of the burst (Schlegel et al. 1998).
GCN 15416 table
GRB_name GRB131030A
GCN_number 15416
Detection_method Swift-XRT Det
ra 345.0673°
decl -5.3685°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15416 SUBJECT: GRB 131030A: Enhanced Swift-XRT position DATE: 13/10/31 12:00:09 GMT FROM: Phil Evans at U of Leicester P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team. Using 2695 s of XRT Photon Counting mode data and 7 UVOT images for GRB 131030A, 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 = 345.06732, -5.36845 which is equivalent to: RA (J2000): 23h 00m 16.16s Dec (J2000): -05d 22' 06.4" with an uncertainty of 1.4 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 15417 table
GRB_name GRB131030A
GCN_number 15417
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15417 SUBJECT: GRB 131030A: Swift-XRT refined Analysis DATE: 13/10/31 14:09:03 GMT FROM: Phil Evans at U of Leicester A. Melandri (INAF-OAB), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), B.P. Gompertz (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), B. Sbarufatti (INAF-OAB/PSU), P. D'Avanzo (INAF-OAB) and E. Troja report on behalf of the Swift-XRT team: We have analysed 6.9 ks of XRT data for GRB 131030A (Troja et al. GCN Circ. 15402), from 68 s to 41.4 ks after the BAT trigger. The data comprise 1.0 ks in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN. Circ 15416). The late-time light curve (from T0+4.3 ks) can be modelled with a power-law decay with a decay index of alpha=1.18 (+0.06, -0.07). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.11 (+/-0.03). The best-fitting absorption column is 1.17 (+/-0.07) x 10^21 cm^-2, in excess of the Galactic value of 4.7 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 2.09 (+0.13, -0.12) and a best-fitting absorption column of 1.16 (+0.30, -0.28) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.5 x 10^-11 (4.7 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.16 (+0.30, -0.28) x 10^21 cm^-2 Galactic foreground: 4.7 x 10^20 cm^-2 Excess significance: 4.0 sigma Photon index: 2.09 (+0.13, -0.12) If the light curve continues to decay with a power-law decay index of 1.18, the count rate at T+24 hours will be 0.055 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.9 x 10^-12 (2.6 x 10^-12) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00576238. This circular is an official product of the Swift-XRT team.
GCN 15418 table
GRB_name GRB131030A
GCN_number 15418
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15418 SUBJECT: GRB 131030A: T21 optical observations DATE: 13/10/31 15:45:15 GMT FROM: Veli-Pekka Hentunen at Taurus Hill Obs,A95 Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report: We have detected GRB 131030A optical afterglow at iTelescope observatory T21 (Mayhill, New Mexico). We used 0.43-m/6.8 astrograph and FLI-PL6303E CCD. Three unfiltered images and three photometric R filter images with 600 sec exposure time were made. The afterglow was detected at the following position RA 23:00:16.17 and DEC -05:22:05.0. The following magnitudes were obtained from the observations using NOMAD1 0846-0702870 (R=17.120) as a comparison star: Tmid(h)+T0 Filter Exp. time (sec) Mag Mag err. 8.53 unfiltered 3x600 18.57CR 0.12 9.26 R 3x600 19.43R 0.24
GCN 15419 table
GRB_name GRB131030A
GCN_number 15419
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15419 SUBJECT: GRB 131030A: TAROT La Silla observatory optical observations DATE: 13/10/31 16:05:28 GMT FROM: Bruce Gendre at ASDC Klotz A. (IRAP-CNRS-OMP), Gendre B. (ARTEMIS), Boer M., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: We imaged the field of GRB 131030A detected by SWIFT (trigger 576238, Troja et al. GCN 15402) with the TAROT robotic telescope (D=25cm) located at the European Southern Observatory, La Silla observatory, Chile. The observations started 2.85h after the GRB trigger. The elevation of the field increased from 59 degrees above horizon and weather conditions were good. We clearly detected the fading counterpart mentioned by previous teams (Virgili et al., GCN 15406, Strob et al. GCN 15410) from T0+2.85h to T0+9.13h This message may be cited.
GCN 15420 table
GRB_name GRB131030A
GCN_number 15420
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 15420 SUBJECT: GRB 131030A: RATIR Optical and NIR Observations DATE: 13/10/31 17:08:16 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos A. de Diego (UNAM), Leonid Georgiev (UNAM), Jess Gonzlez (UNAM), Carlos Romn-Ziga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We observed the field of GRB 131030A (Troja, et al., GCN 15402) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronmico Nacional on Sierra San Pedro Mrtir from 2013/10 31.08 to 2013/10 31.37 UTC (4.91 to 11.97 hours after the BAT trigger), obtaining a total of 4.26 hours exposure in the r and i bands and 1.69 hours exposure in the Z, Y, J, and H bands. We detect the uncatalogued source reported by UVOT (Troja et al., GCN Circ. 15414). In comparison with the SDSS DR9 and 2MASS, we obtain the following detections: r 19.14 +/- 0.01 i 18.92 +/- 0.01 Z 18.76 +/- 0.02 Y 18.61 +/- 0.02 J 18.62 +/- 0.02 H 18.40 +/- 0.02 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. We can confirm that this source fades during our observations with power-law decay indices of approximately t^-0.9 in the r, i, Z and Y bands and a shallower decay of t^-0.5 and t^-0.4 in the J and H bands, respectively. We thank the staff of the Observatorio Astronmico Nacional in San Pedro Mrtir.
GCN 15423 table
GRB_name GRB131030A
GCN_number 15423
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15423 SUBJECT: GRB 131030A: P60 observations DATE: 13/11/01 00:48:58 GMT FROM: Daniel Perley at Caltech D. A. Perley (Caltech) and S. B. Cenko (NASA/GSFC) report on behalf of a larger collaboration: We observed the afterglow of GRB 131030A (GCN 15402, Troja et al.) with the robotic Palomar 60-inch telescope in the g, r, i, and z filters. Three exposures of 180 seconds each were acquired in each filter at four separate epochs starting at 5.09, 6.63, 8.12, and 9.65 hours after the Swift trigger, respectively. The light curve in these bands shows a steady power-law decline with decay index alpha~0.95, similar to that reported by RATIR over the same timescale (GCN 15420, Littlejohns et al.) Photometry from the first epoch (calibrated relative to SDSS) yields: t_mid(d) exp(s) filter magnitude 0.21434 3x180 g = 19.14 +/- 0.02 0.21912 3x180 r = 18.81 +/- 0.02 0.22391 3x180 i = 18.61 +/- 0.03
GCN 15425 table
GRB_name GRB131030A
GCN_number 15425
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15425 SUBJECT: GRB131030A : xinglong TNT optical observation DATE: 13/11/01 07:29:08 GMT FROM: L.P. Xin at NAOC L. P. Xin, J. Y. Wei, Y. L. Qiu, J. S. Deng, J. Wang, X. H. Han and C. Wu on behalf of EAFON report: We began to observe GRB 131030A (Troja et al. GCN 15402) with Xinglong 0.8-m TNT telescope at 13:59:04 (UT) , Oct. 31th, about 17 hours after the burst. 10*300 sec R-band images were obtained. The optical counterpart (Troja et al. GCN 15402) was clearly detected with a magnitude of 19.4+/-0.1 mag in R band, calibrated by USNO B1.0 R2mag at the mean time of 17.397h after the burst. This message may be cited.
GCN 15427 table
GRB_name GRB131030A
GCN_number 15427
Detection_method Optical
ra 345.0672°
decl -5.3686°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15427 SUBJECT: GRB 131030A: Bassano Bresciano Observatory optical observations DATE: 13/11/01 09:20:06 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla and R.Girelli report: We imaged the field of GRB 131030A detected by SWIFT (trigger 576238,Troja et al. GCN 15402) with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy. The observations started 20h 11m. after the GRB trigger,with our schmidt telescope D=320 mm F/D=3.1. Weather conditions were good. We co-added a series of 30 unfiltered CCD exposures of 120sec. We detect a (fading) afterglow in the error box given by SWIFT. at the following position (+/- 3 arcsec): RA (J2000) = 23h 00m 16.12s DEC(J2000) = -05d 22p 06.9s The results of our photometry are: Date UT Vmag +/- err Middle 2013-10-31 17:40:39 19.17 0.21 2013-10-31 18:22:02 19.62 0.28 2013-10-31 19:04:46 20.45 0.22 Magnitudes were estimated with the USNO-B1 cat. and are not corrected for galactic dust extinction. The message may be cited.
GCN 15430 table
GRB_name GRB131030A
GCN_number 15430
Detection_method Optical
ra 345.0667°
decl -5.3681°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15430 SUBJECT: GRB 131030A - RoboPol optical afterglow polarimetry DATE: 13/11/01 13:16:41 GMT FROM: Dmitry Blinov at U of Crete/FORTH M. Balokovic, T. Hovatta, O. King, T. Pearson, A. Readhead Caltech, USA D. Blinov, N. Kylafis, G. Panopoulou, I. Papadakis, I. Papamastorakis, V. Pavlidou, P. Reig, K. Tassis University of Crete/FORTH, Greece P. Khodade, C. Rajarshi, A. Ramaprakash, R. Rouneq Inter-University Centre for Astronomy and Astrophysics, India E. Angelakis, I. Myserlis, L. Fuhrmann, J. A. Zensus Max Planck Institute for Radio Astronomy, Germany R. Feiler, A. Kus, B. Pazderska, E. Pazderski Nicolaus Copernicus University, Poland We observed GRB 131030A (Swift Trigger 576238; Troja et al. GCN 15402) using the RoboPol (http://robopol.org) polarimeter on the 1.3m Skinakas observatory telescope (Greece). We confirm the presence of an uncatalogued source at the location (RA=23h00m16s, Dec=-05d22m05s). Preliminary analysis showed that emission of the source is linearly polarized at high significance. Further analysis will be presented elsewhere. [GCN OPS NOTE(01nov13): This was delayed in distribution by 17 hours because a new entry in the list had to be added.]
GCN 15432 table
GRB_name GRB131030A
GCN_number 15432
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 15432 SUBJECT: LOAO B,R Observation of GRB131030A DATE: 13/11/01 13:34:48 GMT FROM: Changsu Choi at Seoul Nat U Myungshin Im and Changsu Choi (CEOU/Seoul National Univ.), on behalf of a larger collaboration: We observed GRB 131030A (Troja et al., GCN 15402) in B,R band using a 1-m telescope at Mt. Lemmon Optical Observatory (LOAO) in Arizona, US. The observation started at 2013-10-31 01:42:46 UT, or about 4.78 hours after the BAT alert. In all of the BR images, we identify the afterglow, with approximate magnitudes B ~ 19.29 +/-0.07, R ~ 18.88 +/- 0.09 mag (first epoch), calibrated against stars in vicinity based on USNO-B1 photometry. We also confirm fading of the object from serial set of data we took about 4 and 6 hours later. Further observations are planned. We thank the LOAO operator, Jae-Hyuk Yoon and In-Kyung Baek for performing the observation. [GCN OPS NOTE(01nov13): This was delayed in distribution by 8 hours because a new entry had to be added to the list.]
GCN 15435 table
GRB_name GRB131030A
GCN_number 15435
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15435 SUBJECT: GRB 131030A: the 2nd epoch of SAO RAS observations DATE: 13/11/01 18:40:36 GMT FROM: Vladimir Sokolov at SAO RAS A. S. Moskvitin and T. N. Sokolova report on behalf of SAO RAS GRB follow-up team: We observed the GRB 131030A field (Troja et al., GCN#15402) on October, 31, with the 1-m telescope Zeiss-1000 of SAO RAS. The weather conditions were good. The observations were carried out in three bands: B, V, Rc. We clearly detected the OT at the level R = 20.4 +/- 0.1. T_start = 18:16:11 UT, T_end = 21:59:15 UT, T_mid - T0 = 24.059 hours. The total Rc-band exposure was 3000 seconds. The OT magnitude was calibrated against the same set of USNO B1 stars (R2) as in GCN #15412 and not corrected for the Galaxy extinction.
GCN 15436 table
GRB_name GRB131030A
GCN_number 15436
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 15436 SUBJECT: GRB 131030A: Continued RATIR Optical and NIR Observations DATE: 13/11/01 19:26:33 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos A. de Diego (UNAM), Leonid Georgiev (UNAM), Jess Gonzlez (UNAM), Carlos Romn-Ziga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We again observed the field of GRB 131030A (Troja, et al., GCN 15402) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronmico Nacional on Sierra San Pedro Mrtir from 2013/11 1.08 to 2013/11 1.20 UTC (29.01 to 31.91 hours after the BAT trigger), obtaining a total of 2.13 hours exposure in the r and i bands and 0.88 hours exposure in the Z, Y, J, and H bands. We continue to detect the uncatalogued source reported by UVOT (Troja et al., GCN Circ. 15414), at fainter magnitudes than the first epoch of RATIR observations (Littlejohns et al., GCN Circ. 15420). In comparison with the SDSS DR9 and 2MASS, we obtain the following detections: r 20.73 +/- 0.03 i 20.45 +/- 0.03 Z 20.19 +/- 0.05 Y 20.06 +/- 0.07 J 20.07 +/- 0.08 H 19.57 +/- 0.11 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. In comparison with the first epoch of RATIR observations these magnitudes can be modelled with power-law decays, with indices of approximately t^-1.1 for the r and i bands, t^-1.0 for the Z, Y and J bands and t^-0.8 for the H band. We thank the staff of the Observatorio Astronmico Nacional in San Pedro Mrtir.
GCN 15444 table
GRB_name GRB131030A
GCN_number 15444
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15444 SUBJECT: GRB 131030A: Continued RATIR Optical and NIR Observations DATE: 13/11/04 20:01:34 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos A. de Diego (UNAM), Leonid Georgiev (UNAM), Jess Gonzlez (UNAM), Carlos Romn-Ziga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We again observed the field of GRB 131030A (Troja, et al., GCN Circ. 15402) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronmico Nacional on Sierra San Pedro Mrtir from 2013/11 4.10 to 2013/11 4.17 UTC (101.35 to 103.16 hours after the BAT trigger), obtaining a total of 1.04 hours exposure in the r and i bands and 0.29 hours exposure in the Z, Y, J, and H bands. We continue to detect the uncatalogued source reported by UVOT (Troja et al., GCN Circ. 15414) in the r, i and Z bands, at fainter magnitudes than the previous epochs of RATIR observations (Littlejohns et al., GCN Circ. 15436; Littlejohns et al., GCN Circ. 15420). For a source within the Swift-XRT error circle, in comparison with the SDSS DR9 and 2MASS, we obtain the following detections and upper limits (3-sigma): r 22.48 +/- 0.13 i 22.71 +/- 0.30 Z 21.70 +/- 0.34 Y > 21.28 J > 21.05 H > 20.49 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. In comparison with the second epoch of RATIR observations the source has faded by an average of 1.8 magnitudes in the r, i and Z bands. The upper limits all indicate that the source has faded by a minimum of approximately 1 magnitude in the Y, J and H bands. Our observations in the Z, Y, J and H bands are consistent with the previously reported power-law decay indices (Littlejohns et al., GCN Circ. 15436), however, there is indication of a steeper decay in both the r and i bands. Between this and the second epoch of RATIR observations we find power-laws of t^-1.33 for the r band and t^-1.72 for the i band. We thank the staff of the Observatorio Astronmico Nacional in San Pedro Mrtir.
GCN 15456 table
GRB_name GRB131030A
GCN_number 15456
Detection_method Swift-BAT Det
ra 345.0740°
decl -5.3800°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15456 SUBJECT: GRB 131030A: Swift-BAT refined analysis DATE: 13/11/05 16:32:59 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), E. Troja (NASA/GSFC/UMCP), 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 downlinks, we report further analysis of BAT GRB 131030A (trigger #576238) (Troja, et al., GCN Circ. 15402). The BAT ground-calculated position is RA, Dec = 345.074, -5.380 deg which is RA(J2000) = 23h 00m 17.8s Dec(J2000) = -05d 22' 46.4" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 37%. The mask-weighted light curve shows at least two overlapping peaks starting at ~T-8 sec, peaking at ~T+10 sec, and ending at ~T+180 sec with a low-level tail out to at least T+800 sec. T90 (15-350 keV) is 41.1 +- 4.0 sec (estimated error including systematics). The time-averaged spectrum from T-6.04 to T+143.37 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.30 +- 0.03. The fluence in the 15-150 keV band is 2.93 +- 0.04 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+6.40 sec in the 15-150 keV band is 28.1 +- 0.7 ph/cm2/sec. 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/576238/BA/
GCN 15462 table
GRB_name GRB131030A
GCN_number 15462
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15462 SUBJECT: GRB 131030A: Continued RATIR Optical and NIR Observations DATE: 13/11/06 19:36:04 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos A. de Diego (UNAM), Leonid Georgiev (UNAM), Jess Gonzlez (UNAM), Carlos Romn-Ziga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We again observed the field of GRB 131030A (Troja, et al., GCN Circ. 15402) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronmico Nacional on Sierra San Pedro Mrtir from 2013/11 5.08 to 2013/11 5.34 UTC (124.95 to 131.33 hours after the BAT trigger), obtaining a total of 4.24 hours exposure in the r and i bands and 0.92 hours exposure in the Z, Y, J, and H bands. We continue to detect the previously reported source in the r and i bands (Littlejohns, et al., GCN Circ. 15420; Troja, et al., GCN Circ. 15402). For a source within the Swift-XRT error circle, in comparison with the SDSS DR9 and 2MASS, we obtain the following detections and upper limits (3-sigma): r 23.17 +/- 0.14 i 22.73 +/- 0.14 Z > 22.82 Y > 22.35 J > 20.05 H > 19.38 A further epoch of observations was also conducted from 2013/11 6.09 to 2013/11 6.34 UTC (149.15 to 155.17 hours after the BAT trigger), obtaining a total of 3.73 hours exposure in the r and i bands and 1.53 hours exposure in the Z, Y, J, and H bands. The source was detected in the r and i bands once more. For a source within the Swift-XRT error circle, in comparison with the SDSS DR9 and 2MASS, we obtain the following detections and upper limits (3-sigma): r 23.41 +/- 0.18 i 23.06 +/- 0.18 Z > 22.74 Y > 22.25 J > 21.97 H > 21.39 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. In comparison with previous epochs of RATIR observations, the source continues to fade in both the r and i band. We thank the staff of the Observatorio Astronmico Nacional in San Pedro Mrtir.
GCN 15463 table
GRB_name GRB131030A
GCN_number 15463
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15463 SUBJECT: GRB 131030A: RATIR Optical and NIR Upper Limits DATE: 13/11/07 21:36:11 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos A. de Diego (UNAM), Leonid Georgiev (UNAM), Jess Gonzlez (UNAM), Carlos Romn-Ziga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We again observed the field of GRB 131030A (Troja, et al., GCN Circ. 15402) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronmico Nacional on Sierra San Pedro Mrtir from 2013/11 7.09 to 2013/11 7.33 UTC (173.34 to 178.87 hours after the BAT trigger), obtaining a total of 3.40 hours exposure in the r and i bands and 1.41 hours exposure in the Z, Y, J, and H bands. For a source within the Swift-XRT error circle, in comparison with the SDSS DR9 and 2MASS, we obtain the following upper limits (3-sigma): r > 23.52 i > 23.11 Z > 22.69 Y > 22.17 J > 21.87 H > 21.35 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. The upper limits obtained in the r and i bands are consistent with the reported decay from previous epochs of RATIR observations (Littlejohns, et al., GCN Circ. 15462). We thank the staff of the Observatorio Astronmico Nacional in San Pedro Mrtir. [GCN OPS NOTE(07nov13): Per operator's desire, I removed some email header detritus.]
GCN 15481 table
GRB_name GRB131030A
GCN_number 15481
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 15481 SUBJECT: GRB 131030A: MITSuME Akeno Optical observation DATE: 13/11/11 06:15:29 GMT FROM: Taketoshi Yoshii at Tokyo Tech T.Tanigawa, T. Yoshii, K. Ito, Y. Saito, Y. Yano, R. Usui, Y. Tachibana, S. Kurita, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 131030A (E. Troja et al., GCN Circular #15402) with the optical three color (g, Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation started on 2013-10-31 09:37:51 UT ( 12.68h after the burst). We detected the previously reported optical afterglow of GRB131013A (E. Troja et al., GCN Circular #15402) in the Rc and Ic band. The measured magnitudes were listed below. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------------------------------------------------------------------------------------- 43334 10:45:52 2940 >19.92 19.37+/-0.31 18.94+/-0.27 49357 12:14:44 5760 >20.72 20.05+/-0.30 19.25+/-0.24 57097 14:23:40 3780 >20.38 19.57+/-0.22 >19.51 ------------------------------------------------------------------------------------------------------------------------------------- T0+ : Elapsed time after the burst [sec] T-EXP: Total Exposure time [sec] We used GSC2.3 catalog for flux calibration.
GCN 15501 table
GRB_name GRB131030A
GCN_number 15501
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15501 SUBJECT: GRB 131030A, Optical Observations DATE: 13/11/18 11:03:11 GMT FROM: Shashi Bhushan Pandey at ROTSE S. B. Pandey, Brajesh Kumar and Y. C. Joshi (ARIES Nainital India, on behalf of larger Indian GRB collaboration) We observed the Swift GRB 131030A field ( (Troja et al., GCN#15402) using 1.3m DFOT telescope at Devasthal, operated by ARIES Nainital, India. The observations were started at 16:25:47 UT on 2013-10-31. Two frames in each R_c and I_c bands with an exposure time of 300s each were obtained in good seeing conditions. In our individual frames, we clearly detect the optical counterpart of GRB 131030A (GNC circular 15403, 15405, 14506, 15410). The preliminary photometry of co-added R_c (300sec x 2) and I_c (300sec x 2) frames yields following. ................................................................. Time (MID-UT) Exp (sec) Filter Magnitude ................................................................. 2013-10-31, 16:46:39 600 R_c 20.13 +/- 0.04 2013-10-31, 16:33:09 600 I_c 19.49 +/- 0.06 .................................................................. The photometry was performed in comparison to nearby USNO- B1 stars. This message may be cited.