GRB121128A

This page lists all entries on GRB121128A in GRBweb

Summary Fermi GBM IPN Swift GCN 14007 GCN 14008 GCN 14009 GCN 14010 GCN 14011 GCN 14012 GCN 14013 GCN 14015 GCN 14016 GCN 14017 GCN 14018 GCN 14019 GCN 14023 GCN 14024 GCN 14043 GCN 14201 GCN 14255 GCN 14256

Summary table
Variable Value Source
GRB_name_Fermi GRB121128212
T0 5:05:37 UTC GCN_circulars,Swift Det
ra 300.6000° Swift
decl 54.2998° Swift
pos_error 6.47e-05° Swift
T90 17.344 s Fermi_GBM
T90_error 0.923 s Fermi_GBM
T90_start 5:05:50.191 UTC Fermi_GBM
fluence 9.30e-06 erg/cm² Fermi_GBM
fluence_error 1.14e-07 erg/cm² Fermi_GBM
redshift 2.2000
T100 30.535 s
GBM_located False
mjd 56259.212233796294 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB121128212
trigger_name bn121128212
ra 300.6000°
decl 54.2997°
pos_error 2.85e+00°
datum 2012-11-28
t_trigger 5:05:50.959 UTC
T90 17.344 s
T90_error 0.923 s
T90_start 5:05:50.191 UTC
fluence 9.30e-06 erg/cm²
fluence_error 1.14e-07 erg/cm²
flux_1024 1.79e+01 erg/cm²/s
flux_1024_error 5.24e-01 erg/cm²/s
flux_1024_time 7.94e+00 erg/cm²/s
flux_64 2.62e+01 erg/cm²/s
flux_64_error 2.35e+00 erg/cm²/s
IPN table
GRB_name GRB121128A
ra 300.5833°
decl 54.3167°
pos_error 5.00e-02°
redshift 2.2000
Swift table
GRB_name GRB121128A
t_trigger 5:05:37 UTC
ra 300.6000°
decl 54.2998°
pos_error 6.47e-05°
T90 23.3 s
fluence 6.90e-06 erg/cm²
redshift 2.2000
GCN 14007 table
GRB_name GRB121128A
GCN_number 14007
Detection_method Swift Det
t_trigger 5:05:37 UTC
ra 300.5830°
decl 54.3210°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14007 SUBJECT: GRB 121128A: Swift detection of a burst with an optical counterpart DATE: 12/11/28 05:18:00 GMT FROM: Samantha Oates at MSSL S. R. Oates (UCL-MSSL), S. D. Barthelmy (GSFC), H. A. Krimm (CRESST/GSFC/USRA), N. P. M. Kuin (UCL-MSSL), C. B. Markwardt (NASA/GSFC), K. L. Page (U Leicester), M. H. Siegel (PSU) and M. Stamatikos (OSU/NASA/GSFC) report on behalf of the Swift Team: At 05:05:37 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 121128A (trigger=539866). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 300.583, +54.321 which is RA(J2000) = 20h 02m 20s Dec(J2000) = +54d 19' 17" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure with a duration of about 40 sec. The peak count rate was ~20,000 counts/sec (15-350 keV), at ~20 sec after the trigger. The XRT began observing the field at 05:06:54.3 UT, 77.2 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 300.60067, 54.30060 which is equivalent to: RA(J2000) = 20h 02m 24.16s Dec(J2000) = +54d 18' 02.2" with an uncertainty of 3.9 arcseconds (radius, 90% containment). This location is 82 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 2.08 x 10^21 cm^-2 (Kalberla et al. 2005). The initial flux in the 2.5 s image was 1.58e-09 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 85 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 20:02:24.01 = 300.60004 DEC(J2000) = +54:17:59.2 = 54.29977 with a 90%-confidence error radius of about 0.61 arc sec. This position is 5.5 arc sec. from the center of the XRT error circle. The estimated magnitude is 16.11 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.31. Burst Advocate for this burst is S. R. Oates (sro AT mssl.ucl.ac.uk). 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 14008 table
GRB_name GRB121128A
GCN_number 14008
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14008 SUBJECT: GRB 121128A: FTN optical afterglow confirmation DATE: 12/11/28 07:11:25 GMT FROM: Jure Japelj at U. of Ljubljana,Slovenia J. Japelj (U. Ljubljana), N.R. Tanvir (U. Leicester), C. Guidorzi (U. Ferrara) report on behalf of a large collaboration report: The 2-m Faulkes Telescope North automatically began observing GRB 121128A (Oates et al. GCN Circ. 14007) on November 28 2012, 05:07:51 UT corresponding to 134 seconds post burst trigger. We confirm the presence of a fading source at the optical afterglow candidate position reported by Oates et al. GCN Circ. 14007. In the first 10 s exposure, we measure a preliminary R magnitude of 14.5 +- 0.1, calibrated against nearby USNO-B1 stars. The candidate was discovered automatically by the LT-TRAP pipeline.
GCN 14009 table
GRB_name GRB121128A
GCN_number 14009
Detection_method Other
redshift 2.2000
Circular_text TITLE: GCN CIRCULAR NUMBER: 14009 SUBJECT: GRB 121128A - Gemini North redshift DATE: 12/11/28 07:46:48 GMT FROM: Nial Tanvir at U.Leicester N. R. Tanvir (U. Leicester), A. J. Levan (U. Warwick), T. Matulonis (Gemini) report on behalf of a larger collaboration: We observed the counterpart of GRB 121128A (Oates et al. GCN 14007; Japelj et al. GCN 14008) with the GMOS-N spectrograph at Gemini-North, beginning at Nov 28 2012 06:06 UT, approximately 1hr post-burst. The afterglow is well detected and our provisional reduction shows a series of absorption lines of AlII, FeII, CIV, SiII, SiIV with a common redshift of z=2.20.
GCN 14010 table
GRB_name GRB121128A
GCN_number 14010
Detection_method Konus-Wind Det
t_trigger 5:05:53.307 UTC
redshift 2.2000
Circular_text TITLE: GCN CIRCULAR NUMBER: 14010 SUBJECT: Konus-Wind observation of GRB 121128A DATE: 12/11/28 12:12:07 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report: The long-duration soft GRB 121128A (Swift-BAT trigger #539866: Oates et al., GCN 14007) triggered Konus-Wind at T0=18353.307s UT (05:05:53.307) The burst light curve shows a multi-peaked structure with a total duration of ~30 s. The emission is seen up to 6 MeV. As observed by Konus-Wind, the burst had a fluence of (7.0 0.6)x10-6 erg/cm2, and a 64-ms peak flux, measured from T0+5.568 s, of (2.05 0.15)x10-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (measured T0 to T0+16.640 s) is best fit in the 20 keV - 10 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.94 0.14, the high energy photon index beta = -3.36 0.48, the peak energy Ep = 76 4 keV, chi2 = 82.6/87 dof. The spectrum at the maximum count rate (measured T0 to T0+8.848 s) is best fit in the 20 keV - 10 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = +0.87 0.13, the high energy photon index beta = -3.32 0.46, the peak energy Ep = 87 4 keV, chi2 = 69.4/60 dof. Assuming the Gemini North redshift of z=2.20 (Tanvir et al., GCN 14009) and a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, Omega_Lambda = 0.73: the isotropic energy release E_iso is (8.2 0.7)x10^52 erg, the isotropic peak luminosity L_iso_max is (7.7 0.6)x10^52 erg/s, and Ep_rest is (243 13) keV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB121128_T18353/ All the quoted results are preliminary.
GCN 14011 table
GRB_name GRB121128A
GCN_number 14011
Detection_method Swift-BAT Det
ra 300.5890°
decl 54.3010°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14011 SUBJECT: GRB 121128A, Swift-BAT refined analysis DATE: 12/11/28 14:32:00 GMT FROM: Hans Krimm at NASA-GSFC D. M. Palmer (LANL),S. D. Barthelmy (GSFC),W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC),E. E. Fenimore (LANL),N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),C. B. Markwardt (GSFC), S. R. Oates (UCL-MSSL), T. Sakamoto (AGU), G. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-119 to T+195 sec from the recent telemetry downlink, we report further analysis of BAT GRB 121128A (trigger #539866) (Oates, et al., GCN Circ. 14007). The BAT ground-calculated position is RA, Dec = 300.589, 54.301 deg which is RA(J2000) = 20h 02m 21.3s Dec(J2000) = +54d 18' 02.6" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 88%. The mask-weighted light curve shows a complex, multi-peaked structure. The burst began with a faint precursor at ~T-4 sec. The main emission started at ~T+10 sec, peaked at T+22 sec and continued until just after T+40 sec, with weak emission extending out to ~T+70 sec. T90 (15-350 keV) is 23.3 +- 1.6 sec (estimated error including systematics). The time-averaged spectrum from T-0.00 to T+41.69 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.32 +- 0.18, and Epeak of 64.5 +- 6.8 keV (chi squared 33.43 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 6.9 +- 0.4 x 10^-06 erg/cm2 and the 1-sec peak flux measured from T+21.68 sec in the 15-150 keV band is 12.9 +- 0.4 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.86 +- 0.04 (chi squared 62.32 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/539866/BA/
GCN 14012 table
GRB_name GRB121128A
GCN_number 14012
Detection_method Fermi GBM Det
t_trigger 5:05:50.960 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 14012 SUBJECT: GRB 121128A: Fermi GBM observation DATE: 12/11/28 14:42:17 GMT FROM: Sinead McGlynn at Excellence Cluster/TUM Sinead McGlynn (TUM/MPE) reports on behalf of the Fermi GBM Team: "At 05:05:50.96 UT on 28 Nov 2012, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 121128A (trigger 375771953/121128212) which was also detected by the Swift/BAT and UVOT (Oates et al. 2012, GCN 14007). The GBM on-ground location is consistent with the Swift UVOT position. The angle from the Fermi LAT boresight is 83 degrees. The GBM light curve shows two bright pulses with a duration (T90) of about 17s (50-300 keV). The time-averaged spectrum from T0-5.1 s to T0+27.6 s is best fit by a Band function with Epeak = 62.2 +/- 4.6 keV, alpha = -0.80 +/- 0.12, and beta = -2.41 +/- 0.10. The event fluence (10-1000 keV) in this time interval is (1.04 +/- 0.04)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+7.9 s in the 10-1000 keV band is 17.9 +/- 0.5 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 14013 table
GRB_name GRB121128A
GCN_number 14013
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 14013 SUBJECT: GRB 121128A: RAPTOR Detection During Gamma-Ray Emitting Interval DATE: 12/11/28 16:42:41 GMT FROM: James Wren at LANL J. Wren, W.T. Vestrand, P. Wozniak, and H. Davis, of Los Alamos National Laboratory report: The RAPTOR network of robotic optical telescopes made follow-up observations of Swift trigger 539866 (Oates, et al., GCN 14007). Our narrow-field RAPTOR-S telescope located in Los Alamos, NM, began imaging at 05:06:12.6 UT, 35.4 s after the Swift BAT trigger and during the period that the BAT was still detecting gamma-ray emission (Palmer, et al., GCN 14011). Starting during the gamma-ray emitting interval we detect a brightening counterpart that ultimately peaks at T+75s with a R-band equivalent magnitude of approximately 13.9 before beginning to fade. Our unfiltered images are calibrated to the USNO-B1 R-band.
GCN 14015 table
GRB_name GRB121128A
GCN_number 14015
Detection_method Swift-XRT Det
ra 300.6000°
decl 54.2997°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14015 SUBJECT: GRB 121128A: Enhanced Swift-XRT position DATE: 12/11/28 20:06:28 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 2286 s of XRT Photon Counting mode data and 2 UVOT images for GRB 121128A, 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 = 300.60001, +54.29971 which is equivalent to: RA (J2000): 20h 02m 24.00s Dec (J2000): +54d 17' 58.9" with an uncertainty of 1.7 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 14016 table
GRB_name GRB121128A
GCN_number 14016
Detection_method Swift-XRT Other
redshift 2.2000
Circular_text TITLE: GCN CIRCULAR NUMBER: 14016 SUBJECT: GRB 121128A: Swift-XRT refined Analysis DATE: 12/11/28 21:18:04 GMT FROM: Phil Evans at U of Leicester G. Stratta (ASDC), D.N. Burrows (PSU), J.A. Kennea (PSU), M.C. Stroh (PSU), O.M. Littlejohns (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC) and S.R. Oates report on behalf of the Swift-XRT team: We have analysed 12 ks of XRT data for GRB 121128A (Oates et al. GCN Circ. 14007), from 66 s to 41.5 ks after the BAT trigger. The data comprise 108 s 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 Osborne et al. (GCN. Circ 14015). The late-time light curve (from T0+6.9 ks) can be modelled with a power-law decay with a decay index of alpha=1.67 (+0.16, -0.15). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.43 (+/-0.11). The best-fitting absorption column is 1.2 (+/-0.4) x 10^22 cm^-2, at a redshift of 2.2, in addition to the Galactic value of 2.1 x 10^21 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.99 (+0.10, -0.09) and a best-fitting absorption column of 1.1 (+0.5, -0.4) x 10^22 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.1 x 10^-11 (6.4 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Galactic foreground: 2.1 x 10^21 cm^-2 Intrinsic column: 1.1 (+0.5, -0.4) x 10^22 cm^-2 at z=2.2 Photon index: 1.99 (+0.10, -0.09) If the light curve continues to decay with a power-law decay index of 1.59, the count rate at T+24 hours will be 3.2 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.3 x 10^-13 (2.1 x 10^-13) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00539866. This circular is an official product of the Swift-XRT team.
GCN 14017 table
GRB_name GRB121128A
GCN_number 14017
Detection_method Swift-UVOT Det
ra 300.6000°
decl 54.2998°
redshift 2.2000
Circular_text TITLE: GCN CIRCULAR NUMBER: 14017 SUBJECT: GRB 121128A: Swift/UVOT Detection DATE: 12/11/28 22:58:50 GMT FROM: Samantha Oates at MSSL S. R. Oates (MSSL-UCL) reports on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 121128A 85 s after the BAT trigger (Oates et al., GCN Circ. 14007). A source consistent with the XRT position (Osborne et al., GCN Circ. 14015) is detected in the initial white, v, b and u exposures only. The non-detection in the UV filters is consistent with the redshift of z=2.2 reported by Gemini North (Tanvir et al., GCN Circ. 14009) The preliminary UVOT position is: RA (J2000) = 20:02:24.00 = 300.60000 (deg.) Dec (J2000) = +54:17:59.1 = 54.29974 (deg.) with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence). 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 85 235 147 16.19 +/- 0.03 v 629 649 19 17.00 +/- 0.23 b 554 573 20 17.51 +/- 0.17 u 298 547 246 17.33 +/- 0.06 w1 679 2173 175 >19.6 m2 654 2496 214 >19.6 w2 605 2447 214 >20.0 The magnitudes in the table are not corrected for the significant Galactic extinction due to the reddening of E(B-V) = 0.31 in the direction of the burst (Schlegel et al. 1998).
GCN 14018 table
GRB_name GRB121128A
GCN_number 14018
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14018 SUBJECT: GRB 121128A: WSRT radio observation DATE: 12/11/28 23:16:59 GMT FROM: Alexander van der Horst at U of Amsterdam A.J. van der Horst (University of Amsterdam) reports on behalf of a large collaboration: "We observed the position of the GRB 121128A afterglow at 4.9 GHz with the Westerbork Synthesis Radio Telescope at November 28 11.34 to 21.06 UT, i.e. 6.2 - 16.0 hours after the burst (GCN 14007). We do not detect a radio source at the position of the optical counterpart (GCN 14007). The three-sigma rms noise in the map around that position is 69 microJy per beam. The formal flux measurement for a point source at the position of the optical counterpart is 59 +/- 23 microJy. We would like to thank the WSRT staff for quickly scheduling and obtaining these observations."
GCN 14019 table
GRB_name GRB121128A
GCN_number 14019
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14019 SUBJECT: GRB 121128A: optical observation in Mondy observatory DATE: 12/11/29 17:50:57 GMT FROM: Alina Volnova at SAI MSU A.Volnova (SAI MSU), E. Klunko (ISTP), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We observed the field of the Swift GRB 121128A (Oates et al., GCN 14007) with AZT-33IK telescope of Sayan observatory (Mondy). We took several images in R-filter of 60 s exposure on Nov. 28, between (UT) 10:27:30 - 13:43:09 under favorable weather conditions. We detected optical afterglow (Oates et al., GCN 14007; Japelj et al., GCN 14008) in stacked images. A photometry of some stacked image in the beginning of our observations and final stacked image is based on nearby USNO-B1.0 stars: t_start, T0+ (mid), filter, exp., OT, err (UT) d s 10:46:51 0.24047 R 10x60 19.95 +/- 0.06 13:00:21 0.34123 R 49x40 20.58 +/- 0.07 The photometry is still preliminary.
GCN 14023 table
GRB_name GRB121128A
GCN_number 14023
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 14023 SUBJECT: GRB 121128A: MITSuME Akeno Optical upper limits DATE: 12/11/30 09:17:45 GMT FROM: Yoichi Yatsu at Tokyo Tech. T. Yoshii, R. Usui, Y.Aoki, S. Kurita, M. Hayashi, Y. Saito, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed GRB 121128A ( Oates et al., GCN Circular #14007) 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 was started on 2012-11-28 08:49:50 UT ( ~13453 sec after the burst). We detected the previously reported afterglow ( Oates et al., GCN Circular #14007) in Ic band. The results of photometry (3sigma upper limits) are listed below. The photon flux were calibrated against GSC2.3 catalog. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------------------------------------------- 14491 09:07:08 1800 > 19.4 > 19.1 17.92+/-0.14 ------------------------------------------------------------------------------------------- T0+ : Elapsed time after the burst [sec] T-EXP: Total Exposure time [sec]
GCN 14024 table
GRB_name GRB121128A
GCN_number 14024
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14024 SUBJECT: GRB 121128A: optical observation in Mondy observatory DATE: 12/11/30 21:19:10 GMT FROM: Alina Volnova at SAI MSU A.Volnova (SAI MSU, IKI), E. Klunko (ISTP), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We observed the field of the Swift GRB 121128A (Oates et al., GCN 14007) with AZT-33IK telescope of Sayan observatory (Mondy). We took several images in R-filter of 60 s exposure on Nov. 29, between (UT) 10:16:58- 13:33:38 under favorable weather conditions. We do not detect the optical afterglow (Oates et al., GCN 14007; Japelj et al., GCN 14008) in stacked images. A photometry of stacked image t_start, T0+ (mid), filter, exp., UL (3 sigma) (UT) d s 10:16:58 1.28450 R 11200 22.1 is based on the same nearby USNO-B1.0 stars used in our previous observation (Volnova et al., GCN 14019): USNO-B1.0 RA(J2000) Dec(J2000) R 1442-0304687 20:02:23.58 +54:16:58.9 16.67 1442-0304744 20:02:29.58 +54:16:57.0 18.66 1442-0304807 20:02:36.33 +54:17:58.9 18.20 1443-0305750 20:02:37.10 +54:18:34.6 17.72 1443-0305710 20:02:32.72 +54:18:46.9 17.25
GCN 14043 table
GRB_name GRB121128A
GCN_number 14043
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14043 SUBJECT: GRB 121128A: Optical Observations DATE: 12/12/04 05:24:30 GMT FROM: Shashi Bhushan Pandey at ROTSE S.B. Pandey and Brajesh Kumar (ARIES Nainital, India, on behalf of larger Indian GRB collaboration) We observed GRB 121128A (Swift trigger 539866, Oates et al. 2012, GCN Circ.14007) field with the 1.04m telescope at ARIES, Nainital starting at 2012-11-28 14:02:55 (UT). Several images in R_c and I_c pass-bands were obtained. The optical afterglow candidate ( Oates et al. 2012, GCN Circ.14007, Japelj et al. 2012, GCN Circ. 14008) was clearly detected in our frames. The preliminary photometry of the co-added R_c (300sec x 3) and I_c (300sec x 3) frames yield following magnitudes. -------------------------------------------------------------------------- Time (MID-UT) Exp (sec) Filter Magnitude -------------------------------------------------------------------------- 2012-11-28, 14:12:11 900 R_c 20.35 +/- 0.05 2012-11-28, 14:55:40 900 I_c 19.65 +/- 0.11 -------------------------------------------------------------------------- Nearby USNO stars have been used for calibration. This massage may be cited.
GCN 14201 table
GRB_name GRB121128A
GCN_number 14201
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14201 SUBJECT: GRB 121128A: optical observations DATE: 13/02/13 16:37:16 GMT FROM: Alexei Pozanenko at IKI, Moscow Yu. Krugly (Institute of Astronomy of Kharkiv National University), R.Inasaridze, O. Kvaratskhelia(Abastumani Astrophysical Observatory), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift Swift GRB 121128A (Oates et al., GCN 14007)with AC-32 (0.7m Maksutov) telescope of Abastumani Observatory, starting on Nov. 28 (UT) 15:28. We took several unfiltered images of 300 s exposure. We detected the afterglow (Oates et al., GCN 14007; Japelj et al., GCN 14008) in stacked images. The photometry of a the stacked image is based on USNO-B1.0 stars (R2): Start, T0+, Filter, Exp., OT (UT) (mid),days 15:27:50 0.4479 none 9x300 20.24 +/- 0.12 16:18:59 0.4853 none 8x300 20.35 +/- 0.16 17:09:58 0.5208 none 8x300 20.38 +/- 0.18 18:01:17 0.5544 none 9x300 20.55 +/- 0.22 18:46:44 0.5871 none 8x300 20.84 +/- 0.36
GCN 14255 table
GRB_name GRB121128A
GCN_number 14255
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14255 SUBJECT: GRB 121128A: optical upper limit in Maidanak observatory DATE: 13/03/04 20:09:12 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Pozanenko (IKI), A. Volnova (SAI MSU), A. Sergeev (Institute of Radio Astronomy of NASU), O. Burhonov (UBAI), I. Molotov (KIAM) report on behalf of larger GRB follow-up collaboration: We observed the field of Swift GRB 121128A (Oates et al., GCN 14007) with AZT-22 telescope of Maidanak observatory starting on Nov. 30 (UT) 13:47:48 under mean seeing (FWHM) of about 1 arcsec. We obtained several images of 180 s exposure in R filter. The optical afterglow (Oates et al., GCN 14007; Japelj et al., GCN 14008) is not detected in our images. A photometry of the stacked image is based on nearby USNO-B1.0 stars: t_start, T0+ (mid), filter, exp., OT, Upper Limit(3sigma) (UT) d s 13:47:48 2.37924 R 15x180 n/d 23.7
GCN 14256 table
GRB_name GRB121128A
GCN_number 14256
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14256 SUBJECT: GRB 121128A: optical observations in Mondy observatory DATE: 13/03/04 20:20:57 GMT FROM: Alexei Pozanenko at IKI, Moscow A.Volnova (SAI MSU), E. Klunko (ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We report revised results of our observations in Mondy observatory (GCNs 14019, 14024) of the afterglow of GRB 121128A (Oates et al., GCN 14007; Japelj et al., GCN 14008). We re-processed data obtained on Nov. 28,29 and Dec. 02 based on full data set obtained. Nov. 28 t_start, filter, exp, T-t0, OT, err UT s d 10:27:30 R 4*30+16*60 0.23024 19.79 0.05 10:46:51 R 10*60 0.24047 19.85 0.04 10:56:58 R 10*60 0.24751 19.78 0.04 11:07:06 R 10*60 0.25454 19.96 0.05 11:17:14 R 8*60+12*40 0.26674 19.95 0.05 11:42:14 R 25*40 0.28132 20.07 0.05 11:59:13 R 30*40 0.29429 20.12 0.05 12:19:36 R 30*40 0.30845 20.06 0.04 12:39:58 R 30*40 0.32259 20.24 0.05 13:00:21 R 64*40 0.34488 20.32 0.04 Nov. 29 t_start, filter, exp, T-t0, OT, UL(3sigma) UT s d 10:16:58 R 6220 1.27406 n/d 23.3 Dec. 02 t_start, filter, exp, T-t0, OT, UL(3sigma) UT s d 10:47:17 R 4920 4.32854 n/d 21.2 The photometry is based on following reference stars 1442-0304687 20:02:23.58 +54:16:58.9 16.67 1442-0304744 20:02:29.58 +54:16:57.0 18.66 1442-0304807 20:02:36.33 +54:17:58.9 18.20 1443-0305750 20:02:37.10 +54:18:34.6 17.72 1443-0305710 20:02:32.72 +54:18:46.9 17.25 The combined light curve of our observations (this circular, GCN 14201 and GCN 14255) can be found at http://grb.rssi.ru/GRB121128A/GRB121128A_lc2.PNG Non-filtered photometry of Abastumani observatory (GCN 14201) is corrected to the R as d(C-R)=-0.034. One can see non-monotonous behavior of the lc between 0.4 -- 0.4 days after trigger, and probable jet brake between 0.6 and 1.3 days.