GRB130320B

This page lists all entries on GRB130320B in GRBweb

Summary Fermi GBM GCN 14354 GCN 14356

Summary table
Variable Value Source
GRB_name_Fermi GRB130320560
T0 13:24:07 UTC GCN_circulars,IPN Triangulation
ra 195.5390° GCN_circulars,IPN Triangulation
decl -71.2590° GCN_circulars,IPN Triangulation
T90 340.992 s Fermi_GBM
T90_error 1.619 s Fermi_GBM
T90_start 13:24:16.294 UTC Fermi_GBM
fluence 5.78e-05 erg/cm² Fermi_GBM
fluence_error 1.18e-06 erg/cm² Fermi_GBM
T100 350.286 s
GBM_located False
mjd 56371.55841435185 GCN_circulars,IPN Triangulation
Fermi GBM table
GRB_name_Fermi GRB130320560
trigger_name bn130320560
ra 195.5392°
decl -71.2589°
pos_error 5.16e+00°
datum 2013-03-20
t_trigger 13:26:34.534 UTC
T90 340.992 s
T90_error 1.619 s
T90_start 13:24:16.294 UTC
fluence 5.78e-05 erg/cm²
fluence_error 1.18e-06 erg/cm²
flux_1024 1.63e+02 erg/cm²/s
flux_1024_error 8.58e-01 erg/cm²/s
flux_1024_time -1.38e+02 erg/cm²/s
flux_64 1.76e+02 erg/cm²/s
flux_64_error 5.92e+00 erg/cm²/s
GCN 14354 table
GRB_name GRB130320B
GCN_number 14354
Detection_method IPN Triangulation
t_trigger 13:24:07 UTC
ra 195.5390°
decl -71.2590°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14354 SUBJECT: IPN Triangulation of GRB 130320B (very long/bright) DATE: 13/03/29 17:53:12 GMT FROM: Dmitry Svinkin at Ioffe Institute K. Hurley on behalf of the Mars Odyssey and MESSENGER GRB teams, I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin, on behalf of the HEND-Odyssey GRB team, J. Goldsten, on behalf of the MESSENGER GRNS GRB team, S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, V. Connaughton, M. Briggs, C. Meegan, and V. Pelassa, on behalf of the Fermi GBM team, S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on behalf of the Swift-BAT 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 G. Di Cocco, F. Fuschino, M. Galli, C. Labanti, and M. Marisaldi, on behalf of the AGILE MCAL team, report: The very long, bright GRB 130320B was observed by Konus-Wind, Mars Odyssey (HEND), INTEGRAL (SPI-ACS), Fermi (GBM trigger 385478797), Swift (BAT), AGILE (MCAL), and MESSENGER (GRNS) at about 48247 s UT (13:24:07). The burst was outside the coded field of view of the BAT. The burst shows three emission episodes with a total duration of ~380 s. The entire burst was observed by Konus-Wind, INTEGRAL-SPI-ACS, and Mars Odyssey (HEND). AGILE (MCAL) observed only the first (main) episode. Fermi (GBM) triggered on the second episode while exiting the SAA and also observed the third episode. MESSENGER (GRNS) triggered twice: on the first and on the third episode. These two episodes were also observed by Swift (BAT). We have triangulated it to a 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 195.539 (13h 02m 09s) -71.259 (-71d 15' 34") Corners: 197.046 (13h 08m 11s) -71.078 (-71d 04' 39") 196.172 (13h 04m 41s) -71.308 (-71d 18' 30") 194.010 (12h 56m 02s) -71.427 (-71d 25' 38") 194.909 (12h 59m 38s) -71.208 (-71d 12' 29") --------------------------------------------- The error box area is 431 sq. arcmin, and its maximum dimension is 62 arcmin (the minimum one is 22 arcmin). The IPN localizations of all three pulses are consistent with a common source. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB130320_T48251/IPN/ The time history and spectrum will be given in a forthcoming GCN Circular.
GCN 14356 table
GRB_name GRB130320B
GCN_number 14356
Detection_method Konus-Wind Det
t_trigger 13:24:11.726 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 14356 SUBJECT: Konus-Wind observation of GRB 130320B DATE: 13/03/30 11:59:08 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 very long intense GRB 130320B (IPN triangulation: Hurley et al., GCN 14354) triggered Konus-Wind at T0=48251.726s UT (13:24:11.726) The burst consists of three emission episodes with a total duration of ~380 s. The first episode (from ~T0-1 to ~T0+15s) shows very bright multi-peaked pulse with strong hard-to-soft spectral evolution. The second episode is a single weak soft-spectrum pulse from T0+135 to T0+175s. The third episode (from ~T0+195 to ~T0+380s) also shows a single pulse, more intense and harder than the second one. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB130320_T48251/ As observed by Konus-Wind, the burst had a total fluence of (7.8 0.3)x10-5 erg/cm2, and a 64-ms peak flux, measured from T0+0.704s, of (7.2 1.8)x10-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+384.768 s) is best fit in the 20 keV - 15 MeV range by a simple power law with the photon index 2.24 0.03, chi2 = 85.5/98 dof. The spectrum at the onset of the burst (measured from T0 to T0+0.256 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 = -1.0 0.3, the high energy photon index beta = -2.0 0.3, the peak energy Ep = 340 190 keV, chi2 = 23/25 dof. The average spectrum of the second emission episode (measured from T0+139.008 to T0+188.160 s) is best fit in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which: alpha = -1.7 0.3, and Ep = 46 23 keV, chi2 = 47/58 dof. The average spectrum of the third emission episode (measured from T0+294.656 to T0+384.768 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 = -1.23 0.17, the high energy photon index beta = -2.25 0.19, the peak energy Ep = 156 29 keV, chi2 = 91.6/96 dof. All the quoted results are preliminary.