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This page lists all entries on GRB090717A in GRBweb

Summary Fermi GBM GCN 9692 GCN 9738

Summary table
Variable	Value	Source
GRB_name_Fermi	GRB090717034
T0	0:49:32.108 UTC	Fermi_GBM
ra	92.4100°	Fermi_GBM
decl	-62.4800°	Fermi_GBM
pos_error	2.62e+00°	Fermi_GBM
T90	65.537 s	Fermi_GBM
T90_error	1.557 s	Fermi_GBM
T90_start	0:49:34.412 UTC	Fermi_GBM
fluence	2.32e-05 erg/cm²	Fermi_GBM
fluence_error	7.46e-08 erg/cm²	Fermi_GBM
T100	67.841 s
GBM_located	True
mjd	55029.03439939815	Fermi_GBM

Fermi GBM table
GRB_name_Fermi	GRB090717034
trigger_name	bn090717034
ra	92.4100°
decl	-62.4800°
pos_error	2.62e+00°
datum	2009-07-17
t_trigger	0:49:32.108 UTC
T90	65.537 s
T90_error	1.557 s
T90_start	0:49:34.412 UTC
fluence	2.32e-05 erg/cm²
fluence_error	7.46e-08 erg/cm²
flux_1024	1.65e+01 erg/cm²/s
flux_1024_error	2.38e-01 erg/cm²/s
flux_1024_time	5.38e+00 erg/cm²/s
flux_64	1.98e+01 erg/cm²/s
flux_64_error	1.01e+00 erg/cm²/s

GCN 9692 table
GRB_name	GRB090717A
GCN_number	9692
Detection_method	Fermi GBM Det
t_trigger	0:49:32.110 UTC
ra	86.8000°
decl	-64.2000°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 9692 SUBJECT: GRB 090717: Fermi GBM detection DATE: 09/07/20 14:54:27 GMT FROM: Sylvain Guiriec at UAH E. Kara (NASA MSFC/Barnard College), S. Guiriec (UAH) and V. Chaplin (UAH) report on behalf of the Fermi GBM Team: "At 00:49:32.11 UT on 17 July 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090717 (trigger 269484574 / 090717034). The on-ground calculated location, using the GBM trigger data, is RA = 86.8, DEC = -64.2 (J2000 degrees, equivalent to 05 h 47 m, -64 d 12 '), with an uncertainty of 1.0 degree (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Fermi LAT boresight is 70 degrees. This burst was also independently detected by INTEGRAL SPI-ACS. The GBM light curve shows two peaks with a duration (T90) of about 70 s (8-1000 keV). The time-averaged spectrum of the two peaks fit together from T0+2.8 s to T0+12.0 s and T0+44.8 to T0+52.0 is adequately fit by a Band function with Epeak = 120 +/- 5 keV, alpha = -0.88 +/- 0.04, and beta = -2.33 +/- 0.06 (chi squared 967 for 845 d.o.f.). The event fluence (8-1000 keV) in this time interval is (4.5 +/- 0.2)E-07 erg/cm^2. The 1-sec peak photon flux measured starting from T0+2.8 s in the 8-1000 keV band is 7.8 +/- 0.7 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."

GCN 9738 table
GRB_name	GRB090717A
GCN_number	9738
Detection_method	Suzaku WAM Det
Circular_text	TITLE: GCN CIRCULAR NUMBER: 9738 SUBJECT: GRB 090717A: Suzaku WAM observation of the prompt emission DATE: 09/07/31 12:42:00 GMT FROM: Kazutaka Yamaoka at Aoyama Gakuin U N. Vasquez (Tokyo Tech.), K. Yamaoka, S. Sugita (Aoyama Gakuin U.), K. Noda, E. Sonoda, M. Yamauchi, N. Ohmori, H. Hayashi, K. Kono, A. Daikyuji, Y. Nishioka (Univ. of Miyazaki), Y. Hanabata, T. Uehara, T. Takahashi, Y. Fukazawa (Hiroshima U.), M. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA), W. Iwakiri, M. Tashiro, Y. Terada, A. Endo, K. Onda, T. Sugasahara (Saitama U.), Y. Urata (NCU), T. Enoto, K. Nakazawa, K. Makishima (Univ. of Tokyo), Y. E. Nakagawa, T. Tamagawa (RIKEN), S. Hong (Nihon U.), on behalf of the Suzaku WAM team, report: The long GRB 090717A (Fermi-GBM trigger #269484574; Kara et al., GCN 9692), triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 00:49:32.019 UT. The light curve shows a double pulse structure with a duration (T90) of 56 seconds. The fluence in 100 - 1000 keV was 1.10(-0.15, +0.12) x10^-5 erg/cm^2. The 1-s peak flux measured from T0+6 s was 3.14(-0.53, +0.36) photons/cm^2/s in the same energy range. Preliminary result shows that the time-averaged spectrum from T0 to T0+60 s is well fitted by a single power-law model with a photon index of 2.13(-0.22, +0.33) (chi^2/d.o.f. = 15.1/17). All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included. The light curves for this burst are now available at: http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html