//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29114 SUBJECT: GRB 201221E: Fermi GBM Final Real-time Localization DATE: 20/12/21 23:50:46 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 23:28:47 UT on 21 Dec 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 201221E (trigger 630286132.63327 / 201221978). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 158.1, Dec = -39.9 (J2000 degrees, equivalent to J2000 10h 32m, -39d 53'), with a statistical uncertainty of 5.2 degrees. The angle from the Fermi LAT boresight is 90.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201221978/quicklook/glg_skymap_all_bn201221978.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201221978/quicklook/glg_healpix_all_bn201221978.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201221978/quicklook/glg_lc_medres34_bn201221978.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29121 SUBJECT: Fermi GRB 201221E: Global MASTER-Net observations report DATE: 20/12/22 05:30:33 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 201221E ( Fermi GBM team, GCN 29114) errorbox 19065 sec after notice time and 20298 sec after trigger time at 2020-12-22 05:07:05 UT, with upper limit up to 18.7 mag. The observations began at zenith distance = 49 deg. The sun altitude is -35.0 deg. The galactic latitude b = 16 deg., longitude l = 276 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1508233 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 20328 | 2020-12-22 05:07:05 | MASTER-OAFA | (10h 39m 23.18s , -41d 10m 51.0s) | C | 60 | 18.6 | 20407 | 2020-12-22 05:08:25 | MASTER-OAFA | (10h 50m 13.21s , -41d 11m 40.1s) | C | 60 | 18.5 | 20487 | 2020-12-22 05:09:44 | MASTER-OAFA | (10h 26m 46.41s , -35d 13m 03.7s) | C | 60 | 18.6 | 20566 | 2020-12-22 05:11:04 | MASTER-OAFA | (10h 36m 45.15s , -35d 12m 44.4s) | C | 60 | 18.7 | 20646 | 2020-12-22 05:12:23 | MASTER-OAFA | (10h 28m 41.13s , -41d 11m 05.1s) | C | 60 | 18.5 | 20934 | 2020-12-22 05:17:11 | MASTER-OAFA | (10h 51m 32.55s , -39d 10m 36.3s) | C | 60 | 18.7 | 21013 | 2020-12-22 05:18:30 | MASTER-OAFA | (10h 16m 14.44s , -43d 12m 07.6s) | C | 60 | 18.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.