| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081223419 |
|
| T0 |
10:03:57.084 UTC |
Fermi_GBM |
| ra |
112.5000° |
Fermi_GBM |
| decl |
33.2000° |
Fermi_GBM |
| pos_error |
5.06e+00° |
Fermi_GBM |
| T90 |
0.576 s |
Fermi_GBM |
| T90_error |
0.143 s |
Fermi_GBM |
| T90_start |
10:03:57.084 UTC |
Fermi_GBM |
| fluence |
8.34e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
3.86e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.576 s |
|
| GBM_located |
True |
|
| mjd |
54823.41941069444 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081223419 |
| trigger_name |
bn081223419 |
| ra |
112.5000° |
| decl |
33.2000° |
| pos_error |
5.06e+00° |
| datum |
2008-12-23 |
| t_trigger |
10:03:57.148 UTC |
| T90 |
0.576 s |
| T90_error |
0.143 s |
| T90_start |
10:03:57.084 UTC |
| fluence |
8.34e-07 erg/cm² |
| fluence_error |
3.86e-08 erg/cm² |
| flux_1024 |
6.05e+00 erg/cm²/s |
| flux_1024_error |
1.78e-01 erg/cm²/s |
| flux_1024_time |
-6.40e-02 erg/cm²/s |
| flux_64 |
1.47e+01 erg/cm²/s |
| flux_64_error |
8.63e-01 erg/cm²/s |
| GCN 8720 table |
|---|
| GRB_name |
GRB081223A |
| GCN_number |
8720 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
10:03:57.150 UTC |
| ra |
116.7000° |
| decl |
33.5000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8720
SUBJECT: GRB 081223: Fermi GBM detection
DATE: 08/12/24 12:33:20 GMT
FROM: Elisabetta Bissaldi at MPE
Elisabetta Bissaldi (MPE)
reports on behalf of the Fermi GBM Team:
"At 10:03:57.15 UT on 23 December 2008, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 081223 (trigger 251719438 / 081223419).
The on-ground calculated location, using the GBM trigger
data, is RA = 116.7, Dec = 33.5 (J2000 degrees,
equivalent to 07h 47m, 33d 30'), with an uncertainty
of 6.2 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 28 degrees.
This short burst was also independently detected by INTEGRAL SPI-ACS.
The GBM light curve consists of a single spike
with a duration (T90) of about 890 ms (8-1000 keV).
The time-averaged spectrum from T0-0.078 s to T0+0.434 s is
adequately fit by a power law function with an exponential
high energy cutoff. The power law index is -0.63 +/- 0.10 and
the cutoff energy, parameterized as Epeak, is 280 +/- 30 keV
(chi squared 334 for 318 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(1.20 +/- 0.10)E-06 erg/cm^2. The 64-ms peak photon flux
measured starting from T0+0.114 s in the
8-1000 keV band is 22 +/- 3 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|