| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081204517 |
|
| T0 |
12:24:25.729 UTC |
Fermi_GBM |
| ra |
150.8000° |
Fermi_GBM |
| decl |
30.5000° |
Fermi_GBM |
| pos_error |
7.90e+00° |
Fermi_GBM |
| T90 |
0.192 s |
Fermi_GBM |
| T90_error |
0.286 s |
Fermi_GBM |
| T90_start |
12:24:25.729 UTC |
Fermi_GBM |
| fluence |
3.11e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.74e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.192 s |
|
| GBM_located |
True |
|
| mjd |
54804.516964456016 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081204517 |
| trigger_name |
bn081204517 |
| ra |
150.8000° |
| decl |
30.5000° |
| pos_error |
7.90e+00° |
| datum |
2008-12-04 |
| t_trigger |
12:24:25.793 UTC |
| T90 |
0.192 s |
| T90_error |
0.286 s |
| T90_start |
12:24:25.729 UTC |
| fluence |
3.11e-07 erg/cm² |
| fluence_error |
1.74e-08 erg/cm² |
| flux_1024 |
1.97e+00 erg/cm²/s |
| flux_1024_error |
1.27e-01 erg/cm²/s |
| flux_1024_time |
-7.68e-01 erg/cm²/s |
| flux_64 |
1.09e+01 erg/cm²/s |
| flux_64_error |
8.30e-01 erg/cm²/s |
| GCN 8622 table |
|---|
| GRB_name |
GRB081204B |
| GCN_number |
8622 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
12:24:25.790 UTC |
| ra |
181.4000° |
| decl |
32.1000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8622
SUBJECT: GRB 081204B: Fermi GBM detection
DATE: 08/12/05 15:48:57 GMT
FROM: Elisabetta Bissaldi at MPE
E. Bissaldi and A. von Kienlin (MPE)
report on behalf of the Fermi GBM Team:
"At 12:24:25.79 UT on 4 December 2008, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 081204B (trigger 250086266 / 081204517).
The on-ground calculated location, using the GBM trigger
data, is RA = 181.4, DEC = +32.1 (J2000 degrees,
equivalent to 12h 06m, 32d 06'), with an uncertainty
of 7.3 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 46 degrees.
This short GRB consists of a single pulse
with a duration (T90) of about 320 ms (8-1000 keV).
The time-averaged spectrum from T0-0.077 s to T0+0.115 s is
best fit by a simple power law function with
index -1.18 +/- 0.05 (chi squared 439 for 477 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(4.88 +/- 0.13)E-07 erg/cm^2. The peak photon flux
on the 64 ms timescale measured starting from T0-0.077 s
in the 8-1000 keV band is 16.3 +/- 0.6 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|