| Summary table |
|---|
| Variable |
Value |
Source |
| T0 |
23:11:39 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
31.7000° |
GCN_circulars,Fermi GBM final loc |
| decl |
-62.1000° |
GCN_circulars,Fermi GBM final loc |
| GBM_located |
True |
|
| mjd |
60084.96642361111 |
GCN_circulars,Fermi GBM final loc |
| GCN 33836 table |
|---|
| GRB_name |
GRB230520B |
| GCN_number |
33836 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
23:11:39 UTC |
| ra |
31.7000° |
| decl |
-62.1000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 33836
SUBJECT: GRB 230520B: Fermi GBM Final Real-time Localization
DATE: 23/05/20 23:22:06 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 23:11:39 UT on 20 May 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230520B (trigger 706317104.139708 / 230520966).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 31.7, Dec = -62.1 (J2000 degrees, equivalent to J2000 02h 06m, -62d 06'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 152.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230520966/quicklook/glg_skymap_all_bn230520966.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230520966/quicklook/glg_healpix_all_bn230520966.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230520966/quicklook/glg_lc_medres34_bn230520966.gif
|
| GCN 33837 table |
|---|
| GRB_name |
GRB230520B |
| GCN_number |
33837 |
| Detection_method |
Other |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 33837
SUBJECT: GRB 230520B is not a GRB
DATE: 23/05/21 00:41:11 GMT
FROM: Suraj Poolakkil at UAH
S. Poolakkil (UAH) reports on behalf of the Fermi Gamma-ray Burst Monitor
Team:
"The Fermi Gamma-ray Burst Monitor (GBM) trigger 706317104/230520966 at 23:11:39.14 UT
on 20 May 2023, tentatively classified as GRB 230520B (GCN 33836), is
in fact not due to a GRB. This trigger is likely due to Local Particles." |