GRB 211222A
GCN Circular 31280
Subject
GRB 211222A: Fermi GBM Final Real-time Localization
Date
2021-12-22T18:36:35Z (3 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 SHORT GRB
At 18:26:12 UT on 22 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211222A (trigger 661890377.228366 / 211222768).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 103.4, Dec = -53.8 (J2000 degrees, equivalent to J2000 06h 53m, -53d 47'), with a statistical uncertainty of 20.6 degrees.
The angle from the Fermi LAT boresight is 64.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211222768/quicklook/glg_skymap_all_bn211222768.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/bn211222768/quicklook/glg_healpix_all_bn211222768.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211222768/quicklook/glg_lc_medres34_bn211222768.gif
GCN Circular 31282
Subject
Fermi GRB 211222A: Global MASTER-Net observations report
Date
2021-12-22T23:15:11Z (3 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, T.Pogrosheva, E.Minkina,
A.Chasovnikov, V.Topolev, V.Grinshpun, 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
(Irkutsk State University, API),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov
(Blagoveschensk Educational State University)
MASTER-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 211222A ( Fermi GBM team, GCN 31280) errorbox 16726 sec after notice time and 16754 sec after trigger time at 2021-12-22 23:05:26 UT, with upper limit up to 16.8 mag. The observations began at zenith distance = 78 deg. The sun altitude is -63.5 deg.
The galactic latitude b = -21 deg., longitude l = 264 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1824183
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
16785 | 2021-12-22 23:05:26 | MASTER-IAC | (06h 15m 48.74s , -44d 20m 10.0s) | C | 60 | 16.8 |
16785 | 2021-12-22 23:05:26 | MASTER-IAC | (06h 27m 13.44s , -44d 25m 12.1s) | C | 60 | 16.8 |
16864 | 2021-12-22 23:06:46 | MASTER-IAC | (07h 01m 51.93s , -38d 37m 38.8s) | C | 60 | 16.8 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.