| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090117335 |
|
| T0 |
8:02:01.843 UTC |
Fermi_GBM |
| ra |
227.3000° |
Fermi_GBM |
| decl |
-41.5000° |
Fermi_GBM |
| pos_error |
7.71e+00° |
Fermi_GBM |
| T90 |
27.264 s |
Fermi_GBM |
| T90_error |
1.286 s |
Fermi_GBM |
| T90_start |
8:02:01.843 UTC |
Fermi_GBM |
| fluence |
1.10e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
3.50e-08 erg/cm² |
Fermi_GBM |
| T100 |
27.264 s |
|
| GBM_located |
True |
|
| mjd |
54848.33474355324 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090117335 |
| trigger_name |
bn090117335 |
| ra |
227.3000° |
| decl |
-41.5000° |
| pos_error |
7.71e+00° |
| datum |
2009-01-17 |
| t_trigger |
8:02:02.227 UTC |
| T90 |
27.264 s |
| T90_error |
1.286 s |
| T90_start |
8:02:01.843 UTC |
| fluence |
1.10e-06 erg/cm² |
| fluence_error |
3.50e-08 erg/cm² |
| flux_1024 |
3.67e+00 erg/cm²/s |
| flux_1024_error |
2.73e-01 erg/cm²/s |
| flux_1024_time |
2.44e+01 erg/cm²/s |
| flux_64 |
5.38e+00 erg/cm²/s |
| flux_64_error |
1.40e+00 erg/cm²/s |
| GCN 8824 table |
|---|
| GRB_name |
GRB090117B |
| GCN_number |
8824 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
8:02:02.230 UTC |
| ra |
232.9000° |
| decl |
27.6000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8824
SUBJECT: GRB 090117B : Fermi GBM detection
DATE: 09/01/18 12:31:04 GMT
FROM: Andreas von Kienlin at MPE
Andreas von Kienlin (MPE) reports on behalf of the Fermi GBM Team:
"At 08:02:02.23 UT on 17 January 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090117B (trigger 253872124 / 090117335)
The on-ground calculated location, using the GBM trigger
data, is RA = 232.9, DEC = 27.6 (J2000 degrees,
equivalent to 15h 32m, 27d 36'), with an uncertainty
of 9.4 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 49 degrees
The GBM light curve consists of two separate peaks,
the first from T0-0.768 to T0+0.768 sec and the second
from T0+24.0643 sec to T0+26.368 sec. T90 (8-1000 keV)
is about 27 sec. Both peaks were fit using a power-law function
with index -1.55 +/- 0.08 (chi squared 272.27/245 d.o.f.)
for the first and with index -1.55 +/- 0.07
(chi squared 249.72/245 d.o.f.)for the second peak.
The event fluence (8-1000 keV) for both peaks is
(2.1 +/- 0.1)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-0.768 s in the 8-1000 keV band
is 4.6 +/- 0.2 ph/s/cm^2
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|