| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB110401920 |
|
| T0 |
22:04:18.993 UTC |
Fermi_GBM |
| ra |
268.5600° |
Fermi_GBM |
| decl |
26.8700° |
Fermi_GBM |
| pos_error |
4.82e+00° |
Fermi_GBM |
| T90 |
2.368 s |
Fermi_GBM |
| T90_error |
1.27 s |
Fermi_GBM |
| T90_start |
22:04:18.993 UTC |
Fermi_GBM |
| fluence |
1.57e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
6.43e-08 erg/cm² |
Fermi_GBM |
| T100 |
2.368 s |
|
| GBM_located |
True |
|
| mjd |
55652.919664270834 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB110401920 |
| trigger_name |
bn110401920 |
| ra |
268.5600° |
| decl |
26.8700° |
| pos_error |
4.82e+00° |
| datum |
2011-04-01 |
| t_trigger |
22:04:19.633 UTC |
| T90 |
2.368 s |
| T90_error |
1.27 s |
| T90_start |
22:04:18.993 UTC |
| fluence |
1.57e-06 erg/cm² |
| fluence_error |
6.43e-08 erg/cm² |
| flux_1024 |
3.53e+00 erg/cm²/s |
| flux_1024_error |
2.50e-01 erg/cm²/s |
| flux_1024_time |
-2.56e-01 erg/cm²/s |
| flux_64 |
1.08e+01 erg/cm²/s |
| flux_64_error |
1.37e+00 erg/cm²/s |
| GCN 11878 table |
|---|
| GRB_name |
GRB110401A |
| GCN_number |
11878 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
22:04:19.630 UTC |
| ra |
268.5600° |
| decl |
26.8700° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 11878
SUBJECT: GRB 110401A: Fermi GBM detection
DATE: 11/04/04 16:33:52 GMT
FROM: Narayana Bhat at U Alabama/Huntsville/GBM
P. N. Bhat (UAH)
reports on behalf of the Fermi GBM Team:
"Fermi Gamma-Ray Burst Monitor trigger at 22:04:19.63 UT on 01 April 2011,
tentatively classified as "Below Horizon" by the flight software,
is in fact due to GRB 110401A (trigger 323388261 / 110401920).
The on-ground calculated location, using the GBM trigger
data, is RA = 268.56, DEC = 26.87 (J2000 degrees,
equivalent to 17 h 54 m, 26 d 52'), with an uncertainty
of 3.8 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 94 degrees.
The GBM light curve shows 2 strong pulses
with a duration (T90) of about 2 s (50-300 keV).
The time-averaged spectrum from T0-0.32 s to T0+0.704 s is
well fit by a Band function with Epeak = 1194 +/- 406 keV,
alpha = -0.66 +/- 0.15, and beta = -2.36 +/- 0.53
The event fluence (10-1000 keV) in this time interval is
(1.51 +/- 0.09)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-0.256 s in the 10-1000 keV band
is 3.53 +/- 0.25 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|