| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB081120618 |
|
| T0 |
14:49:33.287 UTC |
Fermi_GBM |
| ra |
205.4000° |
Fermi_GBM |
| decl |
-9.1000° |
Fermi_GBM |
| pos_error |
4.90e+00° |
Fermi_GBM |
| T90 |
25.344 s |
Fermi_GBM |
| T90_error |
0.923 s |
Fermi_GBM |
| T90_start |
14:49:33.287 UTC |
Fermi_GBM |
| fluence |
1.94e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
2.42e-08 erg/cm² |
Fermi_GBM |
| T100 |
25.344 s |
|
| GBM_located |
True |
|
| mjd |
54790.61774637731 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB081120618 |
| trigger_name |
bn081120618 |
| ra |
205.4000° |
| decl |
-9.1000° |
| pos_error |
4.90e+00° |
| datum |
2008-11-20 |
| t_trigger |
14:49:34.567 UTC |
| T90 |
25.344 s |
| T90_error |
0.923 s |
| T90_start |
14:49:33.287 UTC |
| fluence |
1.94e-06 erg/cm² |
| fluence_error |
2.42e-08 erg/cm² |
| flux_1024 |
4.25e+00 erg/cm²/s |
| flux_1024_error |
2.78e-01 erg/cm²/s |
| flux_1024_time |
-1.92e-01 erg/cm²/s |
| flux_64 |
6.27e+00 erg/cm²/s |
| flux_64_error |
1.31e+00 erg/cm²/s |
| GCN 8551 table |
|---|
| GRB_name |
GRB081120A |
| GCN_number |
8551 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
14:49:34.570 UTC |
| ra |
205.4000° |
| decl |
-9.1000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8551
SUBJECT: GRB 081120: Fermi GBM detection
DATE: 08/11/25 17:00:02 GMT
FROM: Elisabetta Bissaldi at MPE
Elisabetta Bissaldi (MPE) reports on behalf of the Fermi GBM Team:
"At 14:49:34.57 UT on 20 November 2008, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 081120 (trigger 248885375 / 081120618).
The on-ground calculated location, using the GBM trigger
data, is RA = 205.4, Dec = -9.1 (J2000 degrees,
equivalent to 13h 42m, -09d 06'), with an uncertainty
of 6 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 84 degrees.
The GRB light curve consists of two peaks and has a
duration (T90) of about 12 s (8-1000 keV).
The time-averaged spectrum from T0-3.072 s to T0+6.144 s
is best fit by a Band function with Epeak = 44 +/- 5 keV,
alpha = 0.4 +/- 0.5 and beta = -2.18 +/- 0.10
(chi squared 367 for 353 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(2.7 +/- 0.9)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+2.048 s in the 8-1000 keV band
is 5.1 +/- 1.6 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|