| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090802235 |
|
| T0 |
5:39:03.066 UTC |
Fermi_GBM |
| ra |
84.3300° |
Fermi_GBM |
| decl |
34.0900° |
Fermi_GBM |
| pos_error |
5.74e+00° |
Fermi_GBM |
| T90 |
0.048 s |
Fermi_GBM |
| T90_error |
0.023 s |
Fermi_GBM |
| T90_start |
5:39:03.066 UTC |
Fermi_GBM |
| fluence |
5.43e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
9.17e-09 erg/cm² |
Fermi_GBM |
| T100 |
0.048 s |
|
| GBM_located |
True |
|
| mjd |
55045.23545215278 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090802235 |
| trigger_name |
bn090802235 |
| ra |
84.3300° |
| decl |
34.0900° |
| pos_error |
5.74e+00° |
| datum |
2009-08-02 |
| t_trigger |
5:39:03.082 UTC |
| T90 |
0.048 s |
| T90_error |
0.023 s |
| T90_start |
5:39:03.066 UTC |
| fluence |
5.43e-07 erg/cm² |
| fluence_error |
9.17e-09 erg/cm² |
| flux_1024 |
2.94e+00 erg/cm²/s |
| flux_1024_error |
2.58e-01 erg/cm²/s |
| flux_1024_time |
-5.76e-01 erg/cm²/s |
| flux_64 |
3.07e+01 erg/cm²/s |
| flux_64_error |
2.22e+00 erg/cm²/s |
| GCN 9742 table |
|---|
| GRB_name |
GRB090802A |
| GCN_number |
9742 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
5:39:03.080 UTC |
| ra |
51.0000° |
| decl |
37.9000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 9742
SUBJECT: GRB 090802: Fermi GBM detection
DATE: 09/08/02 21:19:06 GMT
FROM: Elisabetta Bissaldi at MPE
Elisabetta Bissaldi (MPE) reports on behalf of the Fermi GBM Team:
"At 05:39:03.08 UT on 02 August 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090802 (trigger 270884345 / 090802235).
The on-ground calculated location, using the GBM trigger
data, is RA = 51.0, DEC = +37.9 (J2000 degrees,
equivalent to 03h 24m, 37d 54'), with an uncertainty
of 4.9 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 123 degrees.
The GBM light curve consists of a single FRED-like pulse
with a duration (T90) of about 128 ms (8-1000 keV).
The time-averaged spectrum from T0-0.016 s to T0+0.056 s is
best fit by a Band function with Epeak = 283 (-53 +58) keV,
alpha = -0.42 (-0.17 +0.21), and beta = -2.4 (-0.7 +0.3)
(Castor C-stat 325 for 361 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(6.5 +/- 0.3)E-07 erg/cm^2. The 32-ms peak photon flux measured
starting from T0-0.008 s in the 8-1000 keV band
is 61.2 +/- 2.8 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|