GRB090304A

This page lists all entries on GRB090304A in GRBweb

Summary Fermi GBM GCN 8930

Summary table
Variable Value Source
GRB_name_Fermi GRB090304216
T0 5:10:47.901 UTC Fermi_GBM
ra 195.9000° Fermi_GBM
decl -73.4000° Fermi_GBM
pos_error 7.96e+00° Fermi_GBM
T90 2.816 s Fermi_GBM
T90_error 0.923 s Fermi_GBM
T90_start 5:10:47.901 UTC Fermi_GBM
fluence 8.99e-07 erg/cm² Fermi_GBM
fluence_error 1.02e-07 erg/cm² Fermi_GBM
T100 2.816 s
GBM_located True
mjd 54894.2158321875 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB090304216
trigger_name bn090304216
ra 195.9000°
decl -73.4000°
pos_error 7.96e+00°
datum 2009-03-04
t_trigger 5:10:48.157 UTC
T90 2.816 s
T90_error 0.923 s
T90_start 5:10:47.901 UTC
fluence 8.99e-07 erg/cm²
fluence_error 1.02e-07 erg/cm²
flux_1024 1.91e+00 erg/cm²/s
flux_1024_error 1.58e-01 erg/cm²/s
flux_1024_time 1.28e-01 erg/cm²/s
flux_64 3.40e+00 erg/cm²/s
flux_64_error 5.24e-01 erg/cm²/s
GCN 8930 table
GRB_name GRB090304A
GCN_number 8930
Detection_method Fermi GBM Det
t_trigger 5:10:48.160 UTC
ra 246.4000°
decl -80.9000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8930 SUBJECT: GRB 090304: Fermi GBM detection DATE: 09/03/04 16:14:43 GMT FROM: Arne Rau at MPE Arne Rau (MPE) reports on behalf of the Fermi GBM Team: "At 05:10:48.16 UT on 04 March 2009, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 090304 (trigger 257836250 / 090304.216). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 246.4, Dec = -80.9 (J2000 degrees, equivalent to J2000 16h 25m, -80d 54'), with a statistical uncertainty of 13.1 degrees (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 31 degrees. Since the source is weak, the time-averaged spectrum is poorly constrained. This event has also been detected by INTEGRAL SPI-ACS."