GRB 230207A
GCN Circular 33294
Subject
GRB 230207A: Fermi GBM Final Real-time Localization
Date
2023-02-07T00:42:00Z (2 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB
At 00:30:44 UT on 7 Feb 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230207A (trigger 697422649.274452 / 230207021).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 234.3, Dec = -32.5 (J2000 degrees, equivalent to J2000 15h 37m, -32d 30'), with a statistical uncertainty of 4.9 degrees.
The angle from the Fermi LAT boresight is 82.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230207021/quicklook/glg_skymap_all_bn230207021.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/bn230207021/quicklook/glg_healpix_all_bn230207021.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230207021/quicklook/glg_lc_medres34_bn230207021.gif
GCN Circular 33295
Subject
Fermi GRB 230207A: Global MASTER-Net observations report
Date
2023-02-07T01:00:23Z (2 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin
(Lomonosov Moscow State University, SAI, Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile
(Observatorio Astronomico Felix Aguilar OAFA),
R. Rebolo, M. Serra
(The Instituto de Astrofisica de Canarias),
D. Buckley
(South African Astronomical Observatory),
O.A. Gres, N.M. Budnev
(Irkutsk State University, API),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez
(INAOE, Guillermo Haro Astrophysics Observatory),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov
(Blagoveschensk Educational State University)
MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 230207A ( Fermi GBM team, GCN 33294) errorbox 614 sec after notice time and 647 sec after trigger time at 2023-02-07 00:41:32 UT, with upper limit up to 18.8 mag. The observations began at zenith distance = 52 deg. The sun altitude is -35.8 deg.
The galactic latitude b = 18 deg., longitude l = 339 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2197290
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
713 | 2023-02-07 00:41:32 | MASTER-SAAO | (15h 17m 05.81s , -31d 23m 31.7s) | C | 130 | 18.5 |
713 | 2023-02-07 00:41:32 | MASTER-SAAO | (15h 16m 03.20s , -31d 22m 38.3s) | C | 130 | 18.4 |
889 | 2023-02-07 00:44:13 | MASTER-SAAO | (15h 17m 00.65s , -31d 24m 30.0s) | C | 160 | 18.8 |
889 | 2023-02-07 00:44:13 | MASTER-SAAO | (15h 15m 57.97s , -31d 23m 36.8s) | C | 160 | 18.6 |
1090 | 2023-02-07 00:47:24 | MASTER-SAAO | (15h 16m 04.72s , -31d 23m 24.9s) | C | 180 | 18.7 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.