| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB200509818 |
|
| T0 |
19:38:38 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
75.2800° |
Fermi_GBM |
| decl |
70.9800° |
Fermi_GBM |
| pos_error |
9.24e+00° |
Fermi_GBM |
| T90 |
2.176 s |
Fermi_GBM |
| T90_error |
0.405 s |
Fermi_GBM |
| T90_start |
19:38:38.627 UTC |
Fermi_GBM |
| fluence |
2.22e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.51e-08 erg/cm² |
Fermi_GBM |
| T100 |
2.803 s |
|
| GBM_located |
True |
|
| mjd |
58978.81849537037 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB200509818 |
| trigger_name |
bn200509818 |
| ra |
75.2800° |
| decl |
70.9800° |
| pos_error |
9.24e+00° |
| datum |
2020-05-09 |
| t_trigger |
19:38:38.819 UTC |
| T90 |
2.176 s |
| T90_error |
0.405 s |
| T90_start |
19:38:38.627 UTC |
| fluence |
2.22e-07 erg/cm² |
| fluence_error |
1.51e-08 erg/cm² |
| flux_1024 |
1.55e+00 erg/cm²/s |
| flux_1024_error |
2.82e-01 erg/cm²/s |
| flux_1024_time |
-3.84e-01 erg/cm²/s |
| flux_64 |
5.56e+00 erg/cm²/s |
| flux_64_error |
1.16e+00 erg/cm²/s |
| GCN 27707 table |
|---|
| GRB_name |
GRB200509B |
| GCN_number |
27707 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
19:38:38 UTC |
| ra |
75.3000° |
| decl |
71.0000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 27707
SUBJECT: GRB 200509B: Fermi GBM Final Real-time Localization
DATE: 20/05/09 19:48:58 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely SHORT GRB
At 19:38:38 UT on 9 May 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200509B (trigger 610745923.819 / 200509818).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 75.3, Dec = 71.0 (J2000 degrees, equivalent to J2000 05h 01m, 71d 00'), with a statistical uncertainty of 14.2 degrees.
The angle from the Fermi LAT boresight is 114.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200509818/quicklook/glg_skymap_all_bn200509818.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200509818/quicklook/glg_healpix_all_bn200509818.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200509818/quicklook/glg_lc_medres34_bn200509818.gif
|