| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090206620 |
|
| T0 |
14:52:42.107 UTC |
Fermi_GBM |
| ra |
156.2000° |
Fermi_GBM |
| decl |
8.8000° |
Fermi_GBM |
| pos_error |
8.66e+00° |
Fermi_GBM |
| T90 |
0.32 s |
Fermi_GBM |
| T90_error |
0.143 s |
Fermi_GBM |
| T90_start |
14:52:42.107 UTC |
Fermi_GBM |
| fluence |
7.15e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.22e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.32 s |
|
| GBM_located |
True |
|
| mjd |
54868.61993179398 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090206620 |
| trigger_name |
bn090206620 |
| ra |
156.2000° |
| decl |
8.8000° |
| pos_error |
8.66e+00° |
| datum |
2009-02-06 |
| t_trigger |
14:52:42.171 UTC |
| T90 |
0.32 s |
| T90_error |
0.143 s |
| T90_start |
14:52:42.107 UTC |
| fluence |
7.15e-07 erg/cm² |
| fluence_error |
1.22e-08 erg/cm² |
| flux_1024 |
2.55e+00 erg/cm²/s |
| flux_1024_error |
2.08e-01 erg/cm²/s |
| flux_1024_time |
-6.40e-01 erg/cm²/s |
| flux_64 |
1.27e+01 erg/cm²/s |
| flux_64_error |
1.07e+00 erg/cm²/s |
| GCN 8916 table |
|---|
| GRB_name |
GRB090206A |
| GCN_number |
8916 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
14:52:42.170 UTC |
| ra |
157.2000° |
| decl |
14.5000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8916
SUBJECT: GRB 090206: Fermi GBM detection
DATE: 09/02/27 16:00:52 GMT
FROM: Elisabetta Bissaldi at MPE
E. Bissaldi (MPE) and A. von Kienlin (MPE)
report on behalf of the Fermi GBM Team:
"At 14:52:42.17 UT on 06 February 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090206 (trigger 255624764 / 090206620).
The on-ground calculated location, using the GBM trigger
data, is RA = 157.2, DEC = +14.5 (J2000 degrees,
equivalent to 10h 29m, 14d 30'), with an uncertainty
of 8.7 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 72 degrees.
This burst was also independently detected by INTEGRAL SPI-ACS.
The GBM light curve consists of a single peak
with a duration (T90) of about 0.8 s (8-1000 keV).
The time-averaged spectrum from T0-0.064 s to T0+0.512 s is
adequately fit by a power law function with an exponential
high energy cutoff. The power law index is -0.65 +/- 0.14 and
the cutoff energy, parameterized as Epeak, is 710 +/- 170 keV
(chi squared 402 for 456 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(1.04 +/- 0.06)E-06 erg/cm^2. The 64-msec peak photon flux
measured starting from T0 in the 8-1000 keV band is
19.0 +/- 1.0 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|