| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB111017657 |
|
| T0 |
15:45:23.719 UTC |
Fermi_GBM |
| ra |
8.1000° |
Fermi_GBM |
| decl |
-7.0100° |
Fermi_GBM |
| pos_error |
2.60e+00° |
Fermi_GBM |
| T90 |
11.072 s |
Fermi_GBM |
| T90_error |
0.41 s |
Fermi_GBM |
| T90_start |
15:45:23.975 UTC |
Fermi_GBM |
| fluence |
2.07e-05 erg/cm² |
Fermi_GBM |
| fluence_error |
5.64e-08 erg/cm² |
Fermi_GBM |
| T100 |
11.328 s |
|
| GBM_located |
True |
|
| mjd |
55851.65652452546 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB111017657 |
| trigger_name |
bn111017657 |
| ra |
8.1000° |
| decl |
-7.0100° |
| pos_error |
2.60e+00° |
| datum |
2011-10-17 |
| t_trigger |
15:45:23.719 UTC |
| T90 |
11.072 s |
| T90_error |
0.41 s |
| T90_start |
15:45:23.975 UTC |
| fluence |
2.07e-05 erg/cm² |
| fluence_error |
5.64e-08 erg/cm² |
| flux_1024 |
1.69e+01 erg/cm²/s |
| flux_1024_error |
3.01e-01 erg/cm²/s |
| flux_1024_time |
4.99e+00 erg/cm²/s |
| flux_64 |
1.96e+01 erg/cm²/s |
| flux_64_error |
1.27e+00 erg/cm²/s |
| GCN 12449 table |
|---|
| GRB_name |
GRB111017A |
| GCN_number |
12449 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
15:45:23.720 UTC |
| ra |
8.1000° |
| decl |
-7.0100° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 12449
SUBJECT: GRB 111017A: Fermi GBM Detection
DATE: 11/10/18 15:48:22 GMT
FROM: Peter Jenke at MSFC
Peter Jenke (MSFC/NPP)
report on behalf of the Fermi GBM Team:
"At 15:45:23.72 UT on 10 17 2011, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 111017A (trigger 340559125 / 111017.657).
There was an independent SPI-ACS detection of this burst at 15:45:27 UT.
The on-ground calculated location, using the GBM trigger
data, is RA = 8.10, DEC = -7.01 (J2000 degrees,
equivalent to 00 h 32.4 m, -7 d 36 m), with an uncertainty
of 1.0 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 39.00 degrees.
The GBM light curve shows one main peak with emission
extending to 1 MeV. Moreover, this burst was
bright enough to result in a Fermi spacecraft
autonomous rapid repoint (ARR) maneuver.
The burst had a duration (T90) of about 11s (50-300 keV).
This single peak had an unusual symmetric form, unlike the
usual FRED-like light curve. The time-averaged spectrum from
T0-0.512 s to T0+14.848 s is adequately fit by a Band function
with Epeak =692.5 +/- 48.3 keV,
alpha = -0.91 +/- 0.02, and beta = -2.7 +/- 0.40
(CSTAT 1088.9 for 619 d.o.f.).
The event fluence (10-1000 keV) in this time interval is
(2.26 +/- 0.038)E-05 erg/cm^2. The peak photon flux measured
starting from T0+-0.512 s in the 10-1000 keV band
is 5.904 +/- 0.061 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|