| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB180602938 |
|
| T0 |
22:31:05.326 UTC |
Fermi_GBM |
| ra |
86.0500° |
Fermi_GBM |
| decl |
-62.7800° |
Fermi_GBM |
| pos_error |
6.30e+00° |
Fermi_GBM |
| T90 |
0.008 s |
Fermi_GBM |
| T90_error |
0.736 s |
Fermi_GBM |
| T90_start |
22:31:05.326 UTC |
Fermi_GBM |
| fluence |
2.09e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.48e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.008 s |
|
| GBM_located |
True |
|
| mjd |
58271.93825608796 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB180602938 |
| trigger_name |
bn180602938 |
| ra |
86.0500° |
| decl |
-62.7800° |
| pos_error |
6.30e+00° |
| datum |
2018-06-02 |
| t_trigger |
22:31:05.342 UTC |
| T90 |
0.008 s |
| T90_error |
0.736 s |
| T90_start |
22:31:05.326 UTC |
| fluence |
2.09e-07 erg/cm² |
| fluence_error |
1.48e-08 erg/cm² |
| flux_1024 |
1.46e+00 erg/cm²/s |
| flux_1024_error |
1.65e-01 erg/cm²/s |
| flux_1024_time |
-7.04e-01 erg/cm²/s |
| flux_64 |
1.43e+01 erg/cm²/s |
| flux_64_error |
1.36e+00 erg/cm²/s |
| GCN 22759 table |
|---|
| GRB_name |
GRB180602B |
| GCN_number |
22759 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
22:31:05.340 UTC |
| ra |
86.0500° |
| decl |
-62.7800° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 22759
SUBJECT: GRB 180602B: Fermi GBM detection
DATE: 18/06/04 01:18:55 GMT
FROM: Suraj Poolakkil at UAH
S.Poolakkil and C. Meegan (both UAH)
report on behalf of the Fermi GBM Team:
"At 22:31:05.34 UT on 02 June 2018, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 180602B (trigger 549671470/ 180602938).
The on-ground calculated location, using the GBM trigger
data, is RA = 86.05, DEC = -62.78, with an uncertainty
of 2 degrees (radius, 1-sigma containment,
statistical only; there is additionally a systematic
error which we have characterized as a core-plus-tail model, with 90% of
GRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg
systematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).
The angle from the Fermi LAT boresight at the GBM trigger time is 9 degrees.
The GBM light curve consists of a single bright peak
with a duration (T90) of about 0.01 s (50-300 keV).
The time-averaged spectrum from T0-0.06 s to T0+0.06 s is
best fit by a power-law function with an exponential
high-energy cutoff. The power law index is -0.68 +/- 0.18 and
the cutoff energy, parameterized as Epeak, is 395 +/- 105 keV.
The event fluence (10-1000 keV) in this time interval is
(3.0 +/- 0.4)E-07 erg/cm^2. The 64 ms peak photon flux measured
starting from T0-0.06 s in the 10-1000 keV band
is 14 +/- 1 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|