GRB 211223B
GCN Circular 31287
Subject
GRB 211223B: Fermi GBM Final Real-time Localization
Date
2021-12-23T08:33:43Z (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 LONG GRB
At 08:23:22 UT on 23 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211223B (trigger 661940607.257526 / 211223350).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 287.6, Dec = 42.2 (J2000 degrees, equivalent to J2000 19h 10m, 42d 12'), with a statistical uncertainty of 8.1 degrees.
The angle from the Fermi LAT boresight is 13.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211223350/quicklook/glg_skymap_all_bn211223350.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/bn211223350/quicklook/glg_healpix_all_bn211223350.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211223350/quicklook/glg_lc_medres34_bn211223350.gif
GCN Circular 31292
Subject
Fermi GRB 211223B: Global MASTER-Net observations report
Date
2021-12-23T23:00:25Z (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),
B.L.Carrasco, J.R.Valdes,V.Chavushyan, C.J.Martinez, V.M.Patino Alvarez,
M.L.H.Rodriguez (INAOE, OAGH)
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 211223B ( Fermi GBM team, GCN 31287) errorbox 48951 sec after notice time and 48978 sec after trigger time at 2021-12-23 21:59:40 UT, with upper limit up to 16.5 mag. The observations began at zenith distance = 81 deg. The sun altitude is -48.9 deg.
The galactic latitude b = 14 deg., longitude l = 73 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1824738
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
49008 | 2021-12-23 21:59:40 | MASTER-IAC | (19h 50m 57.14s , +48d 39m 52.2s) | C | 60 | 16.5 |
49088 | 2021-12-23 22:01:00 | MASTER-IAC | (19h 52m 29.69s , +46d 44m 47.5s) | C | 60 | 16.1 |
49935 | 2021-12-23 22:15:07 | MASTER-IAC | (19h 50m 58.21s , +48d 38m 53.4s) | C | 60 | 16.0 |
50016 | 2021-12-23 22:16:27 | MASTER-IAC | (19h 52m 32.18s , +46d 46m 10.9s) | C | 60 | 15.7 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.