| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB090516137 |
|
| T0 |
3:17:20.169 UTC |
Fermi_GBM |
| ra |
122.2000° |
Fermi_GBM |
| decl |
-71.6200° |
Fermi_GBM |
| pos_error |
6.00e+00° |
Fermi_GBM |
| T90 |
110.594 s |
Fermi_GBM |
| T90_error |
4.199 s |
Fermi_GBM |
| T90_start |
3:17:36.041 UTC |
Fermi_GBM |
| fluence |
1.62e-05 erg/cm² |
Fermi_GBM |
| fluence_error |
1.44e-07 erg/cm² |
Fermi_GBM |
| T100 |
126.466 s |
|
| GBM_located |
True |
|
| mjd |
54967.13703899305 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB090516137 |
| trigger_name |
bn090516137 |
| ra |
122.2000° |
| decl |
-71.6200° |
| pos_error |
6.00e+00° |
| datum |
2009-05-16 |
| t_trigger |
3:17:20.169 UTC |
| T90 |
110.594 s |
| T90_error |
4.199 s |
| T90_start |
3:17:36.041 UTC |
| fluence |
1.62e-05 erg/cm² |
| fluence_error |
1.44e-07 erg/cm² |
| flux_1024 |
3.28e+00 erg/cm²/s |
| flux_1024_error |
2.26e-01 erg/cm²/s |
| flux_1024_time |
8.09e+01 erg/cm²/s |
| flux_64 |
4.89e+00 erg/cm²/s |
| flux_64_error |
1.09e+00 erg/cm²/s |
| GCN 9413 table |
|---|
| GRB_name |
GRB090516B |
| GCN_number |
9413 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
3:17:20.170 UTC |
| ra |
122.2000° |
| decl |
-71.6200° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 9413
SUBJECT: GRB 090516B: Fermi GBM detection
DATE: 09/05/20 17:04:52 GMT
FROM: Sheila McBreen at MPE
Sheila McBreen (UCD/MPE)
reports on behalf of the Fermi GBM Team:
"At 03:17:20.17 UT on 16 May 2009, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 090516B (trigger 264136642 / 090516137).
The on-ground calculated location, using the GBM trigger
data, is RA = 122.2, DEC = -71.62 (J2000 degrees,
equivalent to 08 h 09 m, -71 d 37 '), with an uncertainty
of 2.6 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 45 degrees.
The GBM light curve consists of several overlapping
peaks from the trigger to about 140 s and possible
weak emission out to about 350 s.
The time-averaged spectrum from T0 s to T0+138 s is
adequately fit by a power law function with an exponential
high energy cutoff. The power law index is -1.01 (+/-0.06) and
the cutoff energy, parameterized as Epeak, is
327.0 (+/-58.7) keV (chi squared 419 for 359 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(3.0 +/- 0.1)E-05 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+80 s in the 8-1000 keV band
is 4.0 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|