| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB240625314 |
|
| T0 |
7:32:40.623 UTC |
Fermi_GBM |
| ra |
118.7400° |
Fermi_GBM |
| decl |
-4.9400° |
Fermi_GBM |
| pos_error |
7.08e+00° |
Fermi_GBM |
| T90 |
0.152 s |
Fermi_GBM |
| T90_error |
0.058 s |
Fermi_GBM |
| T90_start |
7:32:40.623 UTC |
Fermi_GBM |
| fluence |
8.11e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.14e-08 erg/cm² |
Fermi_GBM |
| T100 |
0.152 s |
|
| GBM_located |
True |
|
| mjd |
60486.3143590625 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB240625314 |
| trigger_name |
bn240625314 |
| ra |
118.7400° |
| decl |
-4.9400° |
| pos_error |
7.08e+00° |
| datum |
2024-06-25 |
| t_trigger |
7:32:40.631 UTC |
| T90 |
0.152 s |
| T90_error |
0.058 s |
| T90_start |
7:32:40.623 UTC |
| fluence |
8.11e-07 erg/cm² |
| fluence_error |
1.14e-08 erg/cm² |
| flux_1024 |
9.92e+00 erg/cm²/s |
| flux_1024_error |
3.10e-01 erg/cm²/s |
| flux_1024_time |
-1.28e-01 erg/cm²/s |
| flux_64 |
1.09e+02 erg/cm²/s |
| flux_64_error |
3.14e+00 erg/cm²/s |
| GCN 36758 table |
|---|
| GRB_name |
GRB240625A |
| GCN_number |
36758 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
7:32:40.630 UTC |
| ra |
118.7400° |
| decl |
-4.9400° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 36758
SUBJECT: GRB 240625A: Fermi GBM Final Real-time Localization
DATE: 24/06/25 14:12:38 GMT
FROM: Cuán de Barra at UCD
The Fermi GBM team reports the detection of a likely SHORT GRB
At 07:32:40.63 UT on 25 June 2024, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 240625A (trigger 740993565/240625314).
The on-ground calculated location, using the Fermi GBM trigger data,
is RA = 118.74, Dec = -4.94 (J2000 degrees, equivalent to J2000 7h 54m, -4d 56'),
with a statistical uncertainty of 9.43 degrees.
The angle from the Fermi LAT boresight is 66 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240625314/quicklook/glg_skymap_all_bn240625314.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240625314/quicklook/glg_healpix_all_bn240625314.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240625314/quicklook/glg_lc_medres34_bn240625314.gif |
| GCN 36762 table |
|---|
| GRB_name |
GRB240625A |
| GCN_number |
36762 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
7:32:40.630 UTC |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 36762
SUBJECT: GRB 240625A: Fermi GBM Observation
DATE: 24/06/25 18:24:37 GMT
FROM: Cuán de Barra at UCD
C. de Barra (UCD) and C. Meegan (UAH) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:
At 07:32:40.63 UT on 25 June 2024, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 240625A (trigger 740993565/240625314). The Final Real-time Localization was reported previously (Fermi GBM Team 2024, GCN 36758).
The angle from the Fermi LAT boresight is 66 degrees.
The GBM light curve consists of a single short emission episode with a duration (T90)
of about 0.15 s (50-300 keV). The time-averaged spectrum from T0+0 to T0+0.192 s is
best fit by a power law function with an exponential high-energy cutoff.
The power law index is -0.94 +/- 0.08 and the cutoff energy, parameterized as Epeak, is 113 +/- 6 keV.
The spectrum is equally well fit by a Band function with Epeak= 107 +/- 9 keV, alpha = -0.88 +/- 0.10 and beta = -3.00 +/- 0.46.
The event fluence (10-1000 keV) in this time interval is (7.5 +/- 0.3)E-07 erg/cm^2. The 64-ms peak photon flux measured starting from T0+0.0 s in the 10-1000 keV band is 109 +/- 3 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog:
https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html
For Fermi GBM data and info, please visit the official Fermi GBM Support Page:
https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/" |