//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 31717 SUBJECT: GRB 220309A: Fermi GBM Final Real-time Localization DATE: 22/03/09 06:15:02 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 06:04:43 UT on 9 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220309A (trigger 668498688.984364 / 220309253). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 147.0, Dec = -0.6 (J2000 degrees, equivalent to J2000 09h 48m, 0d 36'), with a statistical uncertainty of 11.5 degrees. The angle from the Fermi LAT boresight is 59.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220309253/quicklook/glg_skymap_all_bn220309253.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220309253/quicklook/glg_healpix_all_bn220309253.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220309253/quicklook/glg_lc_medres34_bn220309253.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 31718 SUBJECT: Fermi GRB 220309A: Global MASTER-Net observations report DATE: 22/03/09 06:45:16 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, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin (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), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (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 220309A ( Fermi GBM team, GCN 31717) errorbox 213 sec after notice time and 221 sec after trigger time at 2022-03-09 06:08:25 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 57 deg. The sun altitude is -49.3 deg. The galactic latitude b = 38 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=1905062 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 251 | 2022-03-09 06:08:25 | MASTER-OAFA | (09h 00m 07.82s , -05d 38m 13.1s) | C | 60 | 18.3 | 451 | 2022-03-09 06:11:44 | MASTER-OAFA | (08h 58m 21.00s , -03d 42m 28.9s) | C | 60 | 18.3 | 649 | 2022-03-09 06:15:03 | MASTER-OAFA | (09h 02m 29.80s , -07d 32m 16.1s) | C | 60 | 18.4 | 757 | 2022-03-09 06:16:50 | MASTER-OAFA | (09h 49m 38.47s , +01d 59m 09.4s) | C | 60 | 18.3 | 856 | 2022-03-09 06:18:30 | MASTER-OAFA | (09h 57m 42.22s , +02d 00m 50.4s) | C | 60 | 18.5 | 956 | 2022-03-09 06:20:09 | MASTER-OAFA | (09h 49m 30.23s , +00d 06m 46.0s) | C | 60 | 18.4 | 1057 | 2022-03-09 06:21:50 | MASTER-OAFA | (09h 57m 37.25s , +00d 05m 55.5s) | C | 60 | 18.3 | 1256 | 2022-03-09 06:25:10 | MASTER-OAFA | (09h 00m 09.29s , -05d 38m 01.8s) | C | 60 | 18.4 | 1456 | 2022-03-09 06:28:29 | MASTER-OAFA | (08h 58m 24.29s , -03d 44m 13.4s) | C | 60 | 18.3 | 1654 | 2022-03-09 06:31:48 | MASTER-OAFA | (09h 02m 22.89s , -07d 31m 31.6s) | C | 60 | 18.4 | 1754 | 2022-03-09 06:33:27 | MASTER-OAFA | (09h 49m 34.41s , +02d 00m 41.6s) | C | 60 | 18.2 | 1854 | 2022-03-09 06:35:07 | MASTER-OAFA | (09h 57m 42.21s , +01d 59m 52.0s) | C | 60 | 18.5 | 1953 | 2022-03-09 06:36:47 | MASTER-OAFA | (09h 49m 30.51s , +00d 04m 42.6s) | C | 60 | 18.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.