| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081215880 |
|
| T0 |
21:06:52.784 UTC |
Fermi_GBM |
| ra |
228.6000° |
Fermi_GBM |
| decl |
-50.7000° |
Fermi_GBM |
| pos_error |
5.12e+00° |
Fermi_GBM |
| T90 |
7.68 s |
Fermi_GBM |
| T90_error |
2.064 s |
Fermi_GBM |
| T90_start |
21:06:52.784 UTC |
Fermi_GBM |
| fluence |
1.78e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
3.58e-08 erg/cm² |
Fermi_GBM |
| T100 |
7.68 s |
|
| GBM_located |
True |
|
| mjd |
54815.87977759259 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081215880 |
| trigger_name |
bn081215880 |
| ra |
228.6000° |
| decl |
-50.7000° |
| pos_error |
5.12e+00° |
| datum |
2008-12-15 |
| t_trigger |
21:06:53.040 UTC |
| T90 |
7.68 s |
| T90_error |
2.064 s |
| T90_start |
21:06:52.784 UTC |
| fluence |
1.78e-06 erg/cm² |
| fluence_error |
3.58e-08 erg/cm² |
| flux_1024 |
4.56e+00 erg/cm²/s |
| flux_1024_error |
4.21e-01 erg/cm²/s |
| flux_1024_time |
-3.84e-01 erg/cm²/s |
| flux_64 |
7.09e+00 erg/cm²/s |
| flux_64_error |
2.33e+00 erg/cm²/s |
| GCN 8682 table |
|---|
| GRB_name |
GRB081215B |
| GCN_number |
8682 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
21:06:53.030 UTC |
| ra |
244.8000° |
| decl |
-45.3000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8682
SUBJECT: GRB 081215B: Fermi GBM detection
DATE: 08/12/19 15:31:23 GMT
FROM: Vandiver Chaplin at UAH/Fermi-GBM
V. Chaplin (UAH), A.J. van der Horst (NASA/MSFC/ORAU)
and R. Preece (UAH) report on behalf of the Fermi GBM Team:
"At 21:06:53.03 UT on 15 December 2008, the Fermi Gamma-Ray Burst
Monitor
triggered and located GRB 081215B (trigger 251068014 / 081215.880).
The on-ground calculated location, using the GBM trigger
data, is RA = 244.8, DEC = -45.3 (J2000 degrees,
equivalent to 16h19m, -45d20'), with a statistical uncertainty of 5.9
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 112 degrees.
The GBM light curve shows/consists of two peaks, each with a duration
of ~10 seconds, at T0
and ~T0+80 seconds, with little emission in between.
The time-averaged spectrum from T0-1.3 s to T0+7.9 s is
well fit by a power law function with an exponential
high energy cutoff. The power law index is -0.14 +/- 0.26 and
the cutoff energy, parameterized as Epeak, is 139 +/- 14 keV.
The event fluence (50-300 keV) in this time interval is
(2.8 +/- 0.5)E-06 erg/cm^2.
The spectral and temporal analysis results presented above are
preliminary;
final results will be published in the GBM GRB Catalog." |