| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081204004 |
|
| T0 |
0:05:18.612 UTC |
Fermi_GBM |
| ra |
63.3000° |
Fermi_GBM |
| decl |
-62.6000° |
Fermi_GBM |
| pos_error |
4.29e+00° |
Fermi_GBM |
| T90 |
7.424 s |
Fermi_GBM |
| T90_error |
1.846 s |
Fermi_GBM |
| T90_start |
0:05:18.612 UTC |
Fermi_GBM |
| fluence |
1.02e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
5.39e-08 erg/cm² |
Fermi_GBM |
| T100 |
7.424 s |
|
| GBM_located |
True |
|
| mjd |
54804.00368763889 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081204004 |
| trigger_name |
bn081204004 |
| ra |
63.3000° |
| decl |
-62.6000° |
| pos_error |
4.29e+00° |
| datum |
2008-12-04 |
| t_trigger |
0:05:24.244 UTC |
| T90 |
7.424 s |
| T90_error |
1.846 s |
| T90_start |
0:05:18.612 UTC |
| fluence |
1.02e-06 erg/cm² |
| fluence_error |
5.39e-08 erg/cm² |
| flux_1024 |
3.01e+00 erg/cm²/s |
| flux_1024_error |
1.47e-01 erg/cm²/s |
| flux_1024_time |
4.00e-03 erg/cm²/s |
| flux_64 |
5.00e+00 erg/cm²/s |
| flux_64_error |
6.59e-01 erg/cm²/s |
| GCN 8710 table |
|---|
| GRB_name |
GRB081204C |
| GCN_number |
8710 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
0:05:24.240 UTC |
| ra |
61.9000° |
| decl |
-61.5000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8710
SUBJECT: GRB 081204C: Fermi GBM detection
DATE: 08/12/22 22:37:27 GMT
FROM: Valerie Connaughton at MSFC
Valerie Connaughton (UAH)
reports on behalf of the Fermi GBM Team:
"At 00:05:24.24 UT on 04 December 2008, the Fermi Gamma-Ray Burst
Monitor triggered and located GRB 081204C
(trigger 250041925 / 081204004).
The on-ground calculated location, using the GBM trigger
data, is RA = 61.9, DEC = -61.5 (J2000 degrees,
equivalent to 04h 08m, -61d 30'), with an uncertainty
of 4.0 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 56 degrees.
The GBM light curve consists of a single weak pulse
with a duration (T90) of about 4.7 s (8-1000 keV).
The time-averaged spectrum from T0-0.8 s to T0+2.3 s is
adequately fit by a Power Law of index around -1.4.
Although the Band function is preferred statistically,
the burst is too weak to constrain its parameters.
The event fluence (8 -- 1000 keV) in this time interval
using a simple power-law fit is (1.48 +/- 0.3)E-06 erg/cm^2.
The 1-sec peak photon flux measured starting from T0 s
in the 8 - 1000 keV band is 7.2 +/- 0.3 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|