GRB140901A

This page lists all entries on GRB140901A in GRBweb

Summary Fermi GBM IPN GCN 16761 GCN 16762

Summary table
Variable Value Source
GRB_name_Fermi GRB140901821
T0 19:41:37 UTC GCN_circulars,IPN Triangulation
ra 15.8167° IPN
decl -32.7500° IPN
pos_error 1.65e+00° IPN
T90 0.176 s Fermi_GBM
T90_error 0.036 s Fermi_GBM
T90_start 19:41:37.559 UTC Fermi_GBM
fluence 5.12e-06 erg/cm² Fermi_GBM
fluence_error 3.15e-08 erg/cm² Fermi_GBM
T100 0.735 s
GBM_located False
mjd 56901.82056712963 GCN_circulars,IPN Triangulation
Fermi GBM table
GRB_name_Fermi GRB140901821
trigger_name bn140901821
ra 15.8200°
decl -32.7600°
pos_error 4.90e+00°
datum 2014-09-01
t_trigger 19:41:37.575 UTC
T90 0.176 s
T90_error 0.036 s
T90_start 19:41:37.559 UTC
fluence 5.12e-06 erg/cm²
fluence_error 3.15e-08 erg/cm²
flux_1024 1.00e+01 erg/cm²/s
flux_1024_error 3.44e-01 erg/cm²/s
flux_1024_time -3.20e-01 erg/cm²/s
flux_64 5.15e+01 erg/cm²/s
flux_64_error 2.01e+00 erg/cm²/s
IPN table
GRB_name GRB140901A
ra 15.8167°
decl -32.7500°
pos_error 1.65e+00°
GCN 16761 table
GRB_name GRB140901A
GCN_number 16761
Detection_method IPN Triangulation
t_trigger 19:41:37 UTC
ra 15.8160°
decl -32.7550°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16761 SUBJECT: IPN Triangulation of GRB 140901A (short/hard/very intense) DATE: 14/09/02 11:36:07 GMT FROM: Valentin Pal'shin at Ioffe Inst K. Hurley, and V. Pal'shin on behalf of the IPN team, I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin, on behalf of the HEND-Odyssey GRB team, V. Connaughton, M. S. Briggs, C. Meegan, V. Pelassa, and A. Goldstein, on behalf of the Fermi GBM 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 W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr, on behalf of the GRS-Odyssey GRB team, report: A short-duration, hard spectrum, very intense GRB 140901A has been observed by Fermi(GBM trigger 431293300), Mars Odyssey (HEND), and INTEGRAL (SPI-ACS), so far, at about 70897 s UT (19:41:37). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 15.816 (01h 03m 16s) -32.755 (-32d 45' 19") Corners: 15.165 (01h 00m 40s) -32.225 (-32d 13' 30") 14.965 (00h 59m 52s) -32.345 (-32d 20' 44") 16.481 (01h 05m 55s) -33.279 (-33d 16' 43") 16.682 (01h 06m 44s) -33.156 (-33d 09' 20") --------------------------------------------- The error box area is 1125 sq. arcmin, and its maximum dimension is 1.66 deg (the minimum one is 12 arcmin). The Sun distance was 139 deg. This box can be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB140901_T70897/IPN/ The time history and spectrum will be given in forthcoming GCN Circulars.
GCN 16762 table
GRB_name GRB140901A
GCN_number 16762
Detection_method Fermi GBM Det
t_trigger 19:41:37.570 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16762 SUBJECT: GRB 140901A: Fermi GBM detection DATE: 14/09/02 19:03:37 GMT FROM: Peter Jenke at MSFC P. Jenke (UAH) reports on behalf of the Fermi GBM Team: "At 19:41:37.57 UT on September 1 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140901A (trigger 431293300/140901821). The GBM on-ground location, using the Fermi GBM trigger data, is consistent with the IPN Triangulation (K. Hurley et al. 2014, GCN 16761). The angle of the burst direction to the Fermi LAT boresight is 97 degrees. The GBM light curve consists of a single peak with a duration (T90) of about 0.16 s (50-300 keV). The time-averaged spectrum from T0+0.0 s to T0+0.19 s is adequately fit by a Band function with Epeak = 1250 +/- 70 keV, Alpha =-0.30 +/- 0.04 and Beta = -3.0 +/- 0.1. The event fluence (10-1000 keV) in this time interval is (4.8 +/- 0.1)E-06 erg/cm^2. The 64 ms peak photon flux measured starting from T0+0.0 s in the 10-1000 keV band is 50 +/- 2 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."