| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090310189 |
|
| T0 |
4:32:49.518 UTC |
Fermi_GBM |
| ra |
184.9000° |
Fermi_GBM |
| decl |
-34.2000° |
Fermi_GBM |
| pos_error |
4.62e+00° |
Fermi_GBM |
| T90 |
116.93 s |
Fermi_GBM |
| T90_error |
1.056 s |
Fermi_GBM |
| T90_start |
4:32:49.518 UTC |
Fermi_GBM |
| fluence |
5.54e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
6.20e-08 erg/cm² |
Fermi_GBM |
| T100 |
116.93 s |
|
| GBM_located |
True |
|
| mjd |
54900.18946201389 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090310189 |
| trigger_name |
bn090310189 |
| ra |
184.9000° |
| decl |
-34.2000° |
| pos_error |
4.62e+00° |
| datum |
2009-03-10 |
| t_trigger |
4:32:49.902 UTC |
| T90 |
116.93 s |
| T90_error |
1.056 s |
| T90_start |
4:32:49.518 UTC |
| fluence |
5.54e-06 erg/cm² |
| fluence_error |
6.20e-08 erg/cm² |
| flux_1024 |
3.43e+00 erg/cm²/s |
| flux_1024_error |
1.98e-01 erg/cm²/s |
| flux_1024_time |
1.22e+00 erg/cm²/s |
| flux_64 |
5.27e+00 erg/cm²/s |
| flux_64_error |
9.44e-01 erg/cm²/s |
| GCN 8977 table |
|---|
| GRB_name |
GRB090310A |
| GCN_number |
8977 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
4:32:49.900 UTC |
| ra |
181.9000° |
| decl |
-38.7000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 8977
SUBJECT: GRB090310: Fermi GBM detection
DATE: 09/03/11 16:34:02 GMT
FROM: Arne Rau at MPE
Arne Rau (MPE) reports on behalf of the Fermi GBM Team:
"At 04:32:49.90 UT on 10 March 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090310 (trigger 258352371 / 090310189).
The on-ground calculated location, using the GBM trigger
data, is RA = 181.9, DEC = -38.7 (J2000 degrees,
equivalent to 12 h 07 m, -38 d 42 '), with an uncertainty
of 5.7 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 77 degrees.
The GBM light curve shows one bright, narrow peak lasting about 4s
followed by several fainter peaks with a total duration (T90) of
about 125.2 s (8-1000 keV).
The time-averaged spectrum from T0-0.128 s to T0+3.968 s is
well fit by a power law function with an exponential
high-energy cutoff at 279 +/- 43 keV and with index -0.65 +/- 0.13
(chi squared 504 for 536 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(2.15 +/- 0.17)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-0.128 s in the 8-1000 keV band
is 4.4 +/- 0.4 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog.
This burst was also independently detected, although untriggered, by
INTEGRAL SPI-ACS."
|