//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28972 SUBJECT: GRB 201201A: Fermi GBM Final Real-time Localization DATE: 20/12/01 03:03:37 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 02:52:14 UT on 1 Dec 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 201201A (trigger 628483939.910616 / 201201120). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 307.5, Dec = 20.8 (J2000 degrees, equivalent to J2000 20h 30m, 20d 48'), with a statistical uncertainty of 8.8 degrees. The angle from the Fermi LAT boresight is 122.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201201120/quicklook/glg_skymap_all_bn201201120.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/bn201201120/quicklook/glg_healpix_all_bn201201120.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201201120/quicklook/glg_lc_medres34_bn201201120.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28975 SUBJECT: Fermi GRB 201201A: Global MASTER-Net observations report DATE: 20/12/01 15:30:16 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 201201A ( Fermi GBM team, GCN 28972) errorbox 44316 sec after notice time and 44327 sec after trigger time at 2020-12-01 15:11:02 UT, with upper limit up to 17.1 mag. Observations started at twilight. The observations began at zenith distance = 30 deg. The sun altitude is -11.4 deg. The galactic latitude b = -11 deg., longitude l = 64 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1493496 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 44358 | 2020-12-01 15:11:02 | MASTER-Tavrida | (20h 35m 25.58s , +21d 59m 09.7s) | C | 60 | 17.1 | 44644 | 2020-12-01 15:15:49 | MASTER-Tavrida | (20h 35m 59.02s , +20d 00m 37.3s) | C | 60 | 15.7 | 44725 | 2020-12-01 15:17:09 | MASTER-Tavrida | (20h 35m 18.93s , +21d 59m 49.8s) | C | 60 | 16.0 | 44805 | 2020-12-01 15:18:30 | MASTER-Tavrida | (20h 43m 56.87s , +22d 00m 54.7s) | C | 60 | 16.1 | 44900 | 2020-12-01 15:20:05 | MASTER-Tavrida | (20h 22m 03.16s , +21d 55m 31.5s) | C | 60 | 15.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28976 SUBJECT: GRB 201201A: DDOTI Observations DATE: 20/12/01 17:55:19 GMT FROM: Alan M Watson at UNAM Nat Butler (ASU), Alan M. Watson (UNAM), Rosa L. Becerra (UNAM), Simone Dichiara (GSFC/UMD), Alexander Kutyrev (GSFC/UMD), William H. Lee (UNAM), Océlotl Lopez (UNAM), Diego Gonzalez (UNAM), Margarita Pereyra (UNAM), Srihari Ravi (ASU), and Eleonora Troja (GSFC/UMD) report: We observed the field of the Fermi/GBM likely long GRB 201201A (Fermi GBM Team, GCN Circ. 28972) with the DDOTI wide-field imager at the Observatorio Astronómico Nacional on Sierra San Pedro Martir (http://ddoti.astroscu.unam.mx) from 2020-12-01 02:56 UTC to 03:39 UTC (from 4.4 to 47.2 minutes after the trigger). We observed a region covering 20.4 degrees in RA and 20.4 degrees in declination (about 416 square degrees) centered on 19:23:21.60 +16:54:36.0 (J2000). We obtained between 120 and 360 seconds of exposure in the w filter. We calibrated our images against the APASS catalog. Our 10-sigma limiting magnitudes vary from w = 16.4 to 18.2. Compared to the USNO-B1, Pan-STARRS DR1, and APASS DR10 catalogs, we detect no uncataloged sources to our 10-sigma limit. We thank the staff of the Observatorio Astronomico Nacional in San Pedro Martir.