| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB150426594 |
|
| T0 |
14:15:31.220 UTC |
GCN_circulars,Fermi GBM Det |
| ra |
17.6400° |
Fermi_GBM |
| decl |
-30.2300° |
Fermi_GBM |
| pos_error |
2.70e+00° |
Fermi_GBM |
| T90 |
22.528 s |
Fermi_GBM |
| T90_error |
3.167 s |
Fermi_GBM |
| T90_start |
14:15:32.055 UTC |
Fermi_GBM |
| fluence |
1.08e-05 erg/cm² |
Fermi_GBM |
| fluence_error |
8.13e-08 erg/cm² |
Fermi_GBM |
| T100 |
23.363 s |
|
| GBM_located |
True |
|
| mjd |
57138.594111342594 |
GCN_circulars,Fermi GBM Det |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB150426594 |
| trigger_name |
bn150426594 |
| ra |
17.6400° |
| decl |
-30.2300° |
| pos_error |
2.70e+00° |
| datum |
2015-04-26 |
| t_trigger |
14:15:31.223 UTC |
| T90 |
22.528 s |
| T90_error |
3.167 s |
| T90_start |
14:15:32.055 UTC |
| fluence |
1.08e-05 erg/cm² |
| fluence_error |
8.13e-08 erg/cm² |
| flux_1024 |
2.21e+01 erg/cm²/s |
| flux_1024_error |
6.81e-01 erg/cm²/s |
| flux_1024_time |
1.38e+01 erg/cm²/s |
| flux_64 |
3.34e+01 erg/cm²/s |
| flux_64_error |
2.90e+00 erg/cm²/s |
| GCN 17783 table |
|---|
| GRB_name |
GRB150426A |
| GCN_number |
17783 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
14:15:31.220 UTC |
| ra |
17.6000° |
| decl |
-30.2000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 17783
SUBJECT: GRB 150426A: Fermi GBM detection
DATE: 15/04/28 18:33:49 GMT
FROM: Binbin Zhang at UAH
Bin-Bin Zhang (UAH) report on behalf of the Fermi GBM team:
"At 14:15:31.22 on April 26 2015, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 150426A (trigger 451750534/150426594).
The GBM on-ground location, using the Fermi GBM trigger
data, is RA = 17.6, Dec = -30.2 with an uncertainty of 1.5
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 of the
burst direction to the Fermi LAT boresight is 136 degrees.
The GBM light curve consists of multiple peaks with a duration (T90)
of about 23 s (50-300 keV). The time-averaged spectrum from T0+0s to
T0+23 s is well fit by a BAND function with Epeak = 109.9 +/- 10.6 keV,
alpha = -1.0 +/- 0.1 and Beta = -2.3 +/- 0.1. The event fluence (10-1000 keV)
in this time interval is (1.15 +/- 0.04)E-05 erg/cm^2. The 1.0-sec
peak photon flux measured starting from T0+13.8 s in the 10-1000 keV
band is 22.1 +/- 0.7 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|