| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB150404733 |
|
| T0 |
17:35:02.951 UTC |
Fermi_GBM |
| ra |
165.9100° |
Fermi_GBM |
| decl |
-67.3700° |
Fermi_GBM |
| pos_error |
6.19e+00° |
Fermi_GBM |
| T90 |
4.864 s |
Fermi_GBM |
| T90_error |
1.95 s |
Fermi_GBM |
| T90_start |
17:35:02.951 UTC |
Fermi_GBM |
| fluence |
6.11e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
2.91e-08 erg/cm² |
Fermi_GBM |
| T100 |
4.864 s |
|
| GBM_located |
True |
|
| mjd |
57116.73267304398 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB150404733 |
| trigger_name |
bn150404733 |
| ra |
165.9100° |
| decl |
-67.3700° |
| pos_error |
6.19e+00° |
| datum |
2015-04-04 |
| t_trigger |
17:35:03.719 UTC |
| T90 |
4.864 s |
| T90_error |
1.95 s |
| T90_start |
17:35:02.951 UTC |
| fluence |
6.11e-07 erg/cm² |
| fluence_error |
2.91e-08 erg/cm² |
| flux_1024 |
3.21e+00 erg/cm²/s |
| flux_1024_error |
2.53e-01 erg/cm²/s |
| flux_1024_time |
6.40e-02 erg/cm²/s |
| flux_64 |
5.09e+00 erg/cm²/s |
| flux_64_error |
1.30e+00 erg/cm²/s |
| GCN 17678 table |
|---|
| GRB_name |
GRB150404A |
| GCN_number |
17678 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
17:35:03.720 UTC |
| ra |
165.9000° |
| decl |
-67.4000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 17678
SUBJECT: GRB 150404A: Fermi GBM detection
DATE: 15/04/05 14:00:24 GMT
FROM: Hoi-Fung Yu at MPE
H.-F. Yu (MPE) and M. Stanbro (UAH) report on behalf of the Fermi GBM Team:
"At 17:35:03.72 UT on 04 April 2015, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 150404A (trigger 449861706 / 150404733),
which is also detected in optical by MASTER-SAAO (Tyurina et al., GCN 17676).
The on-ground calculated location, using the GBM trigger data, is
RA = 165.9, Dec = -67.4 (J2000 degrees, equivalent to 11h 04m, -67d 24'),
with an uncertainty of 8.9 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 about 84 degrees.
The GBM light curve consists of one single short pulse with a
duration (T90) of about 4.8 s (50-300 keV). The time-averaged
spectrum from T0-1.024 s to T0+2.048 s is best fit by a power law
function with an exponential high-energy cutoff. The power law
index is -0.78 +/- 0.25 and the cutoff energy, parameterized as
Epeak, is 90.9 +/- 14.1 keV.
The event fluence (10-1000 keV) in this time interval is
(5.9 +/- 0.6)E-07 erg/cm^2. The 1.024-sec peak photon flux measured
starting from T0+0.064 s in the 10-1000 keV band
is 3.2 +/- 0.3 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|