| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB210424778 |
|
| T0 |
18:40:08.631 UTC |
Fermi_GBM |
| ra |
8.9800° |
Fermi_GBM |
| decl |
13.7200° |
Fermi_GBM |
| pos_error |
1.05e+01° |
Fermi_GBM |
| T90 |
43.776 s |
Fermi_GBM |
| T90_error |
7.701 s |
Fermi_GBM |
| T90_start |
18:40:08.631 UTC |
Fermi_GBM |
| fluence |
9.12e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
4.45e-08 erg/cm² |
Fermi_GBM |
| T100 |
43.776 s |
|
| GBM_located |
True |
|
| mjd |
59328.77787767361 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB210424778 |
| trigger_name |
bn210424778 |
| ra |
8.9800° |
| decl |
13.7200° |
| pos_error |
1.05e+01° |
| datum |
2021-04-24 |
| t_trigger |
18:40:11.447 UTC |
| T90 |
43.776 s |
| T90_error |
7.701 s |
| T90_start |
18:40:08.631 UTC |
| fluence |
9.12e-07 erg/cm² |
| fluence_error |
4.45e-08 erg/cm² |
| flux_1024 |
1.32e+00 erg/cm²/s |
| flux_1024_error |
1.78e-01 erg/cm²/s |
| flux_1024_time |
-2.56e+00 erg/cm²/s |
| flux_64 |
3.13e+00 erg/cm²/s |
| flux_64_error |
1.05e+00 erg/cm²/s |
| GCN 29896 table |
|---|
| GRB_name |
GRB210424A |
| GCN_number |
29896 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
18:40:11 UTC |
| ra |
9.0000° |
| decl |
13.7000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29896
SUBJECT: GRB 210424A: Fermi GBM Final Real-time Localization
DATE: 21/04/24 18:50:18 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 18:40:11 UT on 24 Apr 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210424A (trigger 640982416.446996 / 210424778).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 9.0, Dec = 13.7 (J2000 degrees, equivalent to J2000 00h 36m, 13d 41'), with a statistical uncertainty of 14.1 degrees.
The angle from the Fermi LAT boresight is 72.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210424778/quicklook/glg_skymap_all_bn210424778.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210424778/quicklook/glg_healpix_all_bn210424778.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210424778/quicklook/glg_lc_medres34_bn210424778.gif
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