| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090610723 |
|
| T0 |
17:21:28.321 UTC |
Fermi_GBM |
| ra |
275.9900° |
Fermi_GBM |
| decl |
-42.0900° |
Fermi_GBM |
| pos_error |
8.89e+00° |
Fermi_GBM |
| T90 |
146.434 s |
Fermi_GBM |
| T90_error |
4.419 s |
Fermi_GBM |
| T90_start |
17:21:28.321 UTC |
Fermi_GBM |
| fluence |
3.74e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
9.25e-08 erg/cm² |
Fermi_GBM |
| T100 |
146.434 s |
|
| GBM_located |
True |
|
| mjd |
54992.72324445602 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090610723 |
| trigger_name |
bn090610723 |
| ra |
275.9900° |
| decl |
-42.0900° |
| pos_error |
8.89e+00° |
| datum |
2009-06-10 |
| t_trigger |
17:21:31.905 UTC |
| T90 |
146.434 s |
| T90_error |
4.419 s |
| T90_start |
17:21:28.321 UTC |
| fluence |
3.74e-06 erg/cm² |
| fluence_error |
9.25e-08 erg/cm² |
| flux_1024 |
2.19e+00 erg/cm²/s |
| flux_1024_error |
2.04e-01 erg/cm²/s |
| flux_1024_time |
1.15e+02 erg/cm²/s |
| flux_64 |
3.91e+00 erg/cm²/s |
| flux_64_error |
1.14e+00 erg/cm²/s |
| GCN 9508 table |
|---|
| GRB_name |
GRB090610B |
| GCN_number |
9508 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
17:21:31.900 UTC |
| ra |
276.0000° |
| decl |
-42.1000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 9508
SUBJECT: GRB 090610B: Fermi GBM detection
DATE: 09/06/12 16:28:34 GMT
FROM: Adam Goldstein at Fermi-GBM/UAH
A. Goldstein (UAH) reports on behalf of the Fermi GBM Team:
"At 17:21:31.90 UT on 10 June 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090610B (trigger 266347293 / 090610723).
The on-ground calculated location, using the GBM trigger
data, is RA = 276.0, DEC = -42.1 (J2000 degrees,
equivalent to 18h 24m, -42d 06'), with an uncertainty
of 9.5 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 91 degrees.
The GBM light curve consists of a single short pulse at trigger time
followed by a broad pulse starting at T0+80 s with a total duration
(T90) of about 202.5 s (8-1000 keV).
The time-averaged spectrum for the first pulse from T0-6.2 s to
T0+4.1 s is best fit by a power law function with an exponential
high energy cutoff. The power law index is -0.46 +/- 0.36 and
the cutoff energy, parameterized as Epeak, is 104.90 +/- 16.70 keV
(chi squared 338.8 for 359 d.o.f.).
The time-averaged spectrum for the second pulse from T0+79.9 s to
T0+161.8 s is best fit by a simple power law function with index
-1.66 +/- 0.07 (chi squared 454.9 for 360 d.o.f.).
The event fluence (8-1000 keV) in the total time interval is
(4.13 +/- 0.24)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+2.0 s in the 8-1000 keV band
is 1.54 +/- 0.43 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|