//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 31211 SUBJECT: GRB 211212A: Fermi GBM Final Real-time Localization DATE: 21/12/12 09:38:28 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 09:28:03 UT on 12 Dec 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 211212A (trigger 660994088.510652 / 211212394). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 144.4, Dec = -2.3 (J2000 degrees, equivalent to J2000 09h 37m, -2d 17'), with a statistical uncertainty of 4.8 degrees. The angle from the Fermi LAT boresight is 114.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211212394/quicklook/glg_skymap_all_bn211212394.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/bn211212394/quicklook/glg_healpix_all_bn211212394.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn211212394/quicklook/glg_lc_medres34_bn211212394.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 31224 SUBJECT: Fermi GRB 211212A: Global MASTER-Net observations report DATE: 21/12/12 19:00:20 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB 211212A ( Fermi GBM team, GCN 31211) errorbox 21907 sec after notice time and 21915 sec after trigger time at 2021-12-12 15:33:19 UT, with upper limit up to 15.4 mag. The observations began at zenith distance = 69 deg. The sun altitude is -63.1 deg. The galactic latitude b = 35 deg., longitude l = 238 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1811480 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 21946 | 2021-12-12 15:33:19 | MASTER-Amur | (09h 15m 49.56s , +01d 02m 52.5s) | C | 60 | 15.2 | 22303 | 2021-12-12 15:39:16 | MASTER-Amur | (09h 31m 47.79s , +02d 57m 44.9s) | C | 60 | 14.7 | 22842 | 2021-12-12 15:48:15 | MASTER-Amur | (09h 30m 59.57s , +01d 03m 34.5s) | C | 60 | 14.9 | 22932 | 2021-12-12 15:49:45 | MASTER-Amur | (09h 15m 45.16s , +01d 04m 23.1s) | C | 60 | 15.4 | 23112 | 2021-12-12 15:52:45 | MASTER-Amur | (09h 46m 54.10s , +02d 56m 29.7s) | C | 60 | 14.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.