//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28457 SUBJECT: GRB 200919B: Fermi GBM Final Real-time Localization DATE: 20/09/19 13:49:21 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 13:38:51 UT on 19 Sep 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200919B (trigger 622215536.063538 / 200919569). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 55.5, Dec = 35.6 (J2000 degrees, equivalent to J2000 03h 42m, 35d 36'), with a statistical uncertainty of 8.9 degrees. The angle from the Fermi LAT boresight is 105.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200919569/quicklook/glg_skymap_all_bn200919569.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/bn200919569/quicklook/glg_healpix_all_bn200919569.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200919569/quicklook/glg_lc_medres34_bn200919569.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28459 SUBJECT: Fermi GRB 200919B: Global MASTER-Net observations report DATE: 20/09/19 17:30:13 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 200919B ( Fermi GBM team, GCN 28457) errorbox 11193 sec after notice time and 11243 sec after trigger time at 2020-09-19 16:46:14 UT, with upper limit up to 17.3 mag. Observations started at twilight. The observations began at zenith distance = 79 deg. The sun altitude is -11.6 deg. The galactic latitude b = -15 deg., longitude l = 158 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1444610 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 11273 | 2020-09-19 16:46:14 | MASTER-Tavrida | (02h 52m 32.33s , +40d 01m 18.7s) | C | 60 | 16.2 | 11434 | 2020-09-19 16:48:55 | MASTER-Tavrida | (02h 57m 52.35s , +42d 00m 59.1s) | C | 60 | 16.3 | 11837 | 2020-09-19 16:55:37 | MASTER-Tavrida | (02h 52m 28.23s , +40d 02m 15.8s) | C | 60 | 17.0 | 11917 | 2020-09-19 16:56:58 | MASTER-Tavrida | (02h 57m 53.34s , +42d 01m 29.4s) | C | 60 | 16.8 | 12159 | 2020-09-19 17:01:00 | MASTER-Tavrida | (02h 57m 49.58s , +38d 00m 39.2s) | C | 60 | 16.9 | 12321 | 2020-09-19 17:03:41 | MASTER-Tavrida | (03h 02m 58.94s , +40d 01m 29.9s) | C | 60 | 17.2 | 12482 | 2020-09-19 17:06:22 | MASTER-Tavrida | (02h 57m 49.81s , +38d 01m 47.5s) | C | 60 | 17.0 | 12562 | 2020-09-19 17:07:43 | MASTER-Tavrida | (03h 07m 57.80s , +38d 00m 41.9s) | C | 60 | 16.8 | 12905 | 2020-09-19 17:13:25 | MASTER-Tavrida | (03h 03m 02.43s , +40d 01m 29.2s) | C | 60 | 17.3 | 12985 | 2020-09-19 17:14:46 | MASTER-Tavrida | (03h 13m 21.88s , +40d 00m 43.2s) | C | 60 | 17.1 | 13227 | 2020-09-19 17:18:47 | MASTER-Tavrida | (03h 08m 01.60s , +38d 00m 30.1s) | C | 60 | 17.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.