| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081021398 |
|
| T0 |
9:33:27.007 UTC |
Fermi_GBM |
| ra |
190.3000° |
Fermi_GBM |
| decl |
-25.6000° |
Fermi_GBM |
| pos_error |
3.75e+00° |
Fermi_GBM |
| T90 |
26.112 s |
Fermi_GBM |
| T90_error |
3.974 s |
Fermi_GBM |
| T90_start |
9:33:27.007 UTC |
Fermi_GBM |
| fluence |
5.74e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
7.90e-08 erg/cm² |
Fermi_GBM |
| T100 |
26.112 s |
|
| GBM_located |
True |
|
| mjd |
54760.39822924769 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081021398 |
| trigger_name |
bn081021398 |
| ra |
190.3000° |
| decl |
-25.6000° |
| pos_error |
3.75e+00° |
| datum |
2008-10-21 |
| t_trigger |
9:33:28.015 UTC |
| T90 |
26.112 s |
| T90_error |
3.974 s |
| T90_start |
9:33:27.007 UTC |
| fluence |
5.74e-06 erg/cm² |
| fluence_error |
7.90e-08 erg/cm² |
| flux_1024 |
3.53e+00 erg/cm²/s |
| flux_1024_error |
2.25e-01 erg/cm²/s |
| flux_1024_time |
2.26e+00 erg/cm²/s |
| flux_64 |
5.88e+00 erg/cm²/s |
| flux_64_error |
9.49e-01 erg/cm²/s |
| GCN 8432 table |
|---|
| GRB_name |
GRB081021A |
| GCN_number |
8432 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
9:33:28 UTC |
| ra |
197.9000° |
| decl |
-25.1000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8432
SUBJECT: GRB 081021: Fermi GBM detection
DATE: 08/10/28 16:27:20 GMT
FROM: Andreas von Kienlin at MPE
A. von Kienlin (MPE) and E. Bissaldi (MPE)
report on behalf of the Fermi GBM Team:
"At 09:33:28 UT on 21 October 2008, the Fermi GBM triggered
and located GRB 081021 (trigger 246274409 / 081021398).
The on-ground calculated location, using the GBM trigger
data, is RA = 197.9, DEC = -25.1 (J2000 degrees,
equivalent to 13h 12m, +25d 06'), with an uncertainty
of 2.2 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 125 degrees.
This GRB has one isolated peak, which is about 25 sec long.
The time-averaged spectrum (10-1000 keV) from T0-3.8 s to T0+15.6 s
is best fit by a Band function with Epeak = 117 +/- 11 keV,
alpha = 0.11 +/- 0.25, and beta = -2.8 +/- 0.4.
The fluence (10-1000 keV) in this time interval from the
Band model is (5.3 +/- 0.6)E-06 erg/cm^2.
The 1 sec peak photon flux measured starting from T0+2.3 s
in the 10-1000 keV band is 4.2 +/- 0.9 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|