GRB 210213A
GCN Circular 29503
Subject
GRB 210213A: Fermi GBM Final Real-time Localization
Date
2021-02-13T17:57:36Z (4 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 17:47:14 UT on 13 Feb 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210213A (trigger 634931239.164872 / 210213741).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 122.5, Dec = 22.2 (J2000 degrees, equivalent to J2000 08h 09m, 22d 11'), with a statistical uncertainty of 4.3 degrees.
The angle from the Fermi LAT boresight is 100.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210213741/quicklook/glg_skymap_all_bn210213741.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/bn210213741/quicklook/glg_healpix_all_bn210213741.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210213741/quicklook/glg_lc_medres34_bn210213741.gif
GCN Circular 29505
Subject
Fermi GRB 210213A: Global MASTER-Net observations report
Date
2021-02-13T19:15:07Z (4 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin,
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov, D. Cheryasov
(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, O.Ershova
(Irkutsk State University, API),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich, Yu. Sergienko
(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 210213A ( Fermi GBM team, GCN 29503) errorbox 2736 sec after notice time and 2763 sec after trigger time at 2021-02-13 18:33:17 UT, with upper limit up to 18.9 mag. Observations started at twilight. The observations began at zenith distance = 65 deg. The sun altitude is -13.2 deg.
The galactic latitude b = 27 deg., longitude l = 201 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1546624
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
2793 | 2021-02-13 18:33:17 | MASTER-SAAO | (07h 59m 18.94s , +21d 55m 15.3s) | C | 60 | 18.6 |
2873 | 2021-02-13 18:34:37 | MASTER-SAAO | (08h 06m 26.34s , +23d 55m 29.8s) | C | 60 | 18.3 |
2972 | 2021-02-13 18:36:16 | MASTER-SAAO | (08h 16m 14.99s , +21d 56m 55.8s) | C | 60 | 18.9 |
3072 | 2021-02-13 18:37:55 | MASTER-SAAO | (08h 10m 06.28s , +19d 56m 24.2s) | C | 60 | 17.8 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.