GRB140528A

This page lists all entries on GRB140528A in GRBweb

Summary Fermi GBM IPN GCN 16339 GCN 16344 GCN 16347

Summary table
Variable Value Source
GRB_name_Fermi GRB140528837
T0 20:05:22.750 UTC Fermi_GBM
ra 280.7292° IPN
decl -58.7500° IPN
pos_error 9.50e-01° IPN
T90 13.568 s Fermi_GBM
T90_error 0.572 s Fermi_GBM
T90_start 20:05:23.774 UTC Fermi_GBM
fluence 2.15e-05 erg/cm² Fermi_GBM
fluence_error 4.82e-08 erg/cm² Fermi_GBM
T100 14.592 s
GBM_located False
mjd 56805.83706886574 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB140528837
trigger_name bn140528837
ra 280.7308°
decl -59.0800°
pos_error 2.52e+00°
datum 2014-05-28
t_trigger 20:05:22.750 UTC
T90 13.568 s
T90_error 0.572 s
T90_start 20:05:23.774 UTC
fluence 2.15e-05 erg/cm²
fluence_error 4.82e-08 erg/cm²
flux_1024 1.36e+01 erg/cm²/s
flux_1024_error 3.56e-01 erg/cm²/s
flux_1024_time 1.12e+01 erg/cm²/s
flux_64 2.02e+01 erg/cm²/s
flux_64_error 1.64e+00 erg/cm²/s
IPN table
GRB_name GRB140528A
ra 280.7292°
decl -58.7500°
pos_error 9.50e-01°
GCN 16339 table
GRB_name GRB140528A
GCN_number 16339
Detection_method IPN Triangulation
t_trigger 20:05:23 UTC
ra 280.7310°
decl -59.0800°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16339 SUBJECT: IPN Triangulation of GRB 140528A DATE: 14/05/29 16:23:35 GMT FROM: Dmitry Svinkin at Ioffe Institute S. Golenetskii, R. Aptekar, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, K. Hurley and J. Goldsten, on behalf of the MESSENGER NS GRB team, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, and V. Connaughton, M. S. Briggs, C. Meegan, V. Pelassa, and A. Goldstein, on behalf of the Fermi GBM team, report: The long-duration GRB 140528A has been observed by Fermi (GBM: trigger 423000325), Konus-Wind, INTEGRAL (SPI-ACS), and MESSENGER (GRNS), so far, at about 72323 s UT (20:05:23). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 280.731 (18h 42m 55s) -59.080 (-59d 04' 47") Corners: 281.417 (18h 45m 40s) -58.757 (-58d 45' 25") 281.160 (18h 44m 38s) -59.219 (-59d 13' 09") 280.032 (18h 40m 08s) -59.394 (-59d 23' 38") 280.306 (18h 41m 13s) -58.938 (-58d 56' 16") --------------------------------------------- The error box area is 864 sq. arcmin, and its maximum dimension is 57 arcmin (the minimum one is 24 arcmin). The center of the GBM ground position (given in glg_tcat_all_bn140528837_v01.fit) is 1.29 deg from the center of the box. This box may be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB140528_T72325/IPN/ Details of the Konus-Wind observation will be given in a forthcoming GCN Circular.
GCN 16344 table
GRB_name GRB140528A
GCN_number 16344
Detection_method Konus-Wind Det
t_trigger 20:05:25.953 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16344 SUBJECT: Konus-Wind observation of GRB 140528A DATE: 14/05/30 13:27:09 GMT FROM: Valentin Pal'shin at Ioffe Inst S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, and T. Cline on behalf of the Konus-Wind team, report: The long-duration, moderately intense GRB 140528A (Golenetskii et al., GCN 16339) triggered Konus-Wind at T0=72325.953 s UT (20:05:25.953). The burst light curve shows a multi-peaked structure with a total duration of ~16 s. The emission is seen up to ~3 MeV. As observed by Konus-Wind, the burst had a fluence of 2.4(-0.3,+0.3)x10^-5 erg/cm2, and a 64-ms peak flux, measured from T0+10.112 s, of 5.1(-1.3,+1.3)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (measured from T0 to T0+16.640 s) is best fit in the 20 keV - 5 MeV range by a GRB (Band) model with the following parameters: the low-energy photon index alpha = -0.59(-0.14,+0.17), the high energy photon index beta = -2.8(-0.7,+0.3), the peak energy Ep = 202(-20,+21) keV, chi2 = 47/72 dof. The spectrum near the maximum count rate (measured from T0+8.448 s to T0+16.640 s) is best fit in the 20 keV - 5 MeV range by a GRB (Band) model with the following parameters: the low-energy photon index alpha =-0.40(-0.23,+0.27), the high energy photon index beta = -2.7(-1.1,+0.3), the peak energy Ep = 177(-22,+27) keV, chi2 = 60/69 dof. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB140528_T72325/ All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.
GCN 16347 table
GRB_name GRB140528A
GCN_number 16347
Detection_method Fermi GBM Det
t_trigger 20:05:22.750 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16347 SUBJECT: GRB 140528A: Fermi GBM Detection DATE: 14/05/30 22:51:39 GMT FROM: Matthew Stanbro at UAH/Fermi Matthew Stanbro (UAH) reports on behalf of the Fermi GBM Team: "At 20:05:22.75 UT on 28 May 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140528A (trigger 423000325 / 140528837) which was triangulated by IPN (Golenetskii et al. 2014, GCN 16339). The GBM on-ground location, using the Fermi GBM trigger data, is consistent with IPN triangulation. The GBM light curve shows a complex structure, consisting of multiple peaks with a total duration (T90) of about 13.6 s (50-300 keV). The time-averaged spectrum from T0+1.024 s to T0+14.591 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -0.56 +/- 0.03 and the cutoff energy, parameterized as Epeak, is 270 +/- 6 keV. The event fluence (10-1000 keV) in this time interval is (2.3 +/- 0.3)E-05 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+11.20 s in the 10-1000 keV band is 13.6 +/- 0.4 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."