| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081217983 |
|
| T0 |
23:34:36.983 UTC |
Fermi_GBM |
| ra |
116.8000° |
Fermi_GBM |
| decl |
26.8000° |
Fermi_GBM |
| pos_error |
3.00e+00° |
Fermi_GBM |
| T90 |
29.696 s |
Fermi_GBM |
| T90_error |
12.892 s |
Fermi_GBM |
| T90_start |
23:34:36.983 UTC |
Fermi_GBM |
| fluence |
9.62e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
1.40e-07 erg/cm² |
Fermi_GBM |
| T100 |
29.696 s |
|
| GBM_located |
True |
|
| mjd |
54817.982372488426 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081217983 |
| trigger_name |
bn081217983 |
| ra |
116.8000° |
| decl |
26.8000° |
| pos_error |
3.00e+00° |
| datum |
2008-12-17 |
| t_trigger |
23:34:49.015 UTC |
| T90 |
29.696 s |
| T90_error |
12.892 s |
| T90_start |
23:34:36.983 UTC |
| fluence |
9.62e-06 erg/cm² |
| fluence_error |
1.40e-07 erg/cm² |
| flux_1024 |
5.47e+00 erg/cm²/s |
| flux_1024_error |
1.63e-01 erg/cm²/s |
| flux_1024_time |
7.81e+00 erg/cm²/s |
| flux_64 |
6.90e+00 erg/cm²/s |
| flux_64_error |
7.05e-01 erg/cm²/s |
| GCN 8686 table |
|---|
| GRB_name |
GRB081217A |
| GCN_number |
8686 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
23:34:49.010 UTC |
| ra |
116.7000° |
| decl |
26.7000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8686
SUBJECT: GRB 081217: Fermi GBM detection
DATE: 08/12/19 22:33:44 GMT
FROM: Colleen A. Wilson at NASA/MSFC/NSSTC
Colleen A. Wilson-Hodge (NASA/MSFC)
reports on behalf of the Fermi GBM Team:
"At 23:34:49.01 UT on 17 December 2008, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 081217 (trigger 251249690 / 081217983).
The on-ground calculated location, using the GBM trigger data, is
RA = 116.7, DEC = +26.7 (J2000 degrees, equivalent to 07 h 47 m, 26 d 44'),
with an uncertainty of 2.0 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 54 degrees.
The GBM light curve consists of a broad structured peak with a duration
(T90) of about 39 s (8-1000 keV). The time-averaged spectrum from T0 to
T0+18.432 s is adequately fit by a Band function with
Epeak = 167 +/- 11 keV, alpha = -0.61 +/- 0.09, and beta = -2.7 +/- 0.6.
The event fluence (8-1000 keV) in this time interval is
(1.0 +/- 0.07)E-05 erg/cm^2. The 1-sec peak photon flux measured
starting from T0 in the 8-1000 keV band is 4.0 +/- 0.3 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|