| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090717111 |
|
| T0 |
2:40:31.594 UTC |
Fermi_GBM |
| ra |
246.9500° |
Fermi_GBM |
| decl |
22.9700° |
Fermi_GBM |
| pos_error |
6.77e+00° |
Fermi_GBM |
| T90 |
0.384 s |
Fermi_GBM |
| T90_error |
0.181 s |
Fermi_GBM |
| T90_start |
2:40:31.594 UTC |
Fermi_GBM |
| fluence |
3.08e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
2.59e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.384 s |
|
| GBM_located |
True |
|
| mjd |
55029.111476782404 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090717111 |
| trigger_name |
bn090717111 |
| ra |
246.9500° |
| decl |
22.9700° |
| pos_error |
6.77e+00° |
| datum |
2009-07-17 |
| t_trigger |
2:40:31.786 UTC |
| T90 |
0.384 s |
| T90_error |
0.181 s |
| T90_start |
2:40:31.594 UTC |
| fluence |
3.08e-07 erg/cm² |
| fluence_error |
2.59e-08 erg/cm² |
| flux_1024 |
1.61e+00 erg/cm²/s |
| flux_1024_error |
1.27e-01 erg/cm²/s |
| flux_1024_time |
-5.12e-01 erg/cm²/s |
| flux_64 |
4.18e+00 erg/cm²/s |
| flux_64_error |
7.99e-01 erg/cm²/s |
| GCN 9693 table |
|---|
| GRB_name |
GRB090717B |
| GCN_number |
9693 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
2:40:31.790 UTC |
| ra |
247.0000° |
| decl |
23.0000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 9693
SUBJECT: GRB 090717B: Fermi GBM detection
DATE: 09/07/20 14:56:58 GMT
FROM: Arne Rau at MPE
Arne Rau (MPE) reports on behalf of the Fermi GBM Team:
"At 02:40:31.79 UT on 17 July 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090717B (trigger 269491233 / 090717111).
The on-ground calculated location, using the GBM trigger
data, is RA = 247.0, DEC = 23.0 (J2000 degrees,
equivalent to 16 h 28m m, 23 d 00 '), with an uncertainty
of 3.9 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 35 degrees.
This burst was also independently detected (although not triggered) by
INTEGRAL SPI-ACS.
The GBM light curve consists of a single peak
with a duration (T90) of about 0.9 s (8-1000 keV).
The time-averaged spectrum from T0-0.256s to T0+0.128 s is
adequately fit by a simple power law function with index -1.02 +/- 0.04
(chi squared 604 for 732 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(4.83 +/- 0.03)E-07 erg/cm^2. The 0.384-sec peak photon flux measured
starting from T0-0.256 s in the 8-1000 keV band
is 3.91 +/- 0.42 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|