| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090625234 |
|
| T0 |
5:36:56.625 UTC |
Fermi_GBM |
| ra |
20.2900° |
Fermi_GBM |
| decl |
-6.4300° |
Fermi_GBM |
| pos_error |
3.38e+00° |
Fermi_GBM |
| T90 |
14.336 s |
Fermi_GBM |
| T90_error |
0.923 s |
Fermi_GBM |
| T90_start |
5:36:56.625 UTC |
Fermi_GBM |
| fluence |
1.35e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
1.28e-08 erg/cm² |
Fermi_GBM |
| T100 |
14.336 s |
|
| GBM_located |
True |
|
| mjd |
55007.23398871528 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090625234 |
| trigger_name |
bn090625234 |
| ra |
20.2900° |
| decl |
-6.4300° |
| pos_error |
3.38e+00° |
| datum |
2009-06-25 |
| t_trigger |
5:37:00.209 UTC |
| T90 |
14.336 s |
| T90_error |
0.923 s |
| T90_start |
5:36:56.625 UTC |
| fluence |
1.35e-06 erg/cm² |
| fluence_error |
1.28e-08 erg/cm² |
| flux_1024 |
1.43e+00 erg/cm²/s |
| flux_1024_error |
1.33e-01 erg/cm²/s |
| flux_1024_time |
6.34e+00 erg/cm²/s |
| flux_64 |
3.68e+00 erg/cm²/s |
| flux_64_error |
2.08e+00 erg/cm²/s |
| GCN 9571 table |
|---|
| GRB_name |
GRB090625A |
| GCN_number |
9571 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
5:37:00.210 UTC |
| ra |
20.3000° |
| decl |
-6.4000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 9571
SUBJECT: GRB 090625: Fermi GBM detection
DATE: 09/06/25 14:15:33 GMT
FROM: Arne Rau at MPE
Arne Rau (MPE) reports on behalf of the Fermi GBM Team:
"At 05:37:00.21 UT on 25 June 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090625 (trigger 267601022 / 090625234).
The on-ground calculated location, using the GBM trigger
data, is RA = 20.3, DEC = -6.4 (J2000 degrees,
equivalent to 01 h 21 m, -06 d 24'), with an uncertainty
of 3.1 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 13 degrees.
The GBM light curve shows multiple weak pulses
with a duration (T90) of about 51 s (8-1000 keV).
The time-averaged spectrum from T0-6.144 s to T0+12.288 s is
well fit by a power law function with an exponential
high energy cutoff. The power law index is -0.6 +/- 0.2 and
the cutoff energy, parameterized as Epeak, is 198 +/- 36 keV
(chi squared 551 for 579 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(8.8 +/- 1.2)E-07 erg/cm^2. The 4.096-sec peak photon flux measured
starting from T0+4.096 s in the 8-1000 keV band
is 0.50 +/- 0.02 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|