//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28489 SUBJECT: GRB 200924A: Fermi GBM Final Real-time Localization DATE: 20/09/24 09:25:46 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 09:15:20 UT on 24 Sep 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200924A (trigger 622631725.82437 / 200924386). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 317.3, Dec = -56.4 (J2000 degrees, equivalent to J2000 21h 09m, -56d 23'), with a statistical uncertainty of 5.6 degrees. The angle from the Fermi LAT boresight is 102.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200924386/quicklook/glg_skymap_all_bn200924386.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/bn200924386/quicklook/glg_healpix_all_bn200924386.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200924386/quicklook/glg_lc_medres34_bn200924386.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28494 SUBJECT: Fermi GRB 200924A: Global MASTER-Net observations report DATE: 20/09/25 02:30:12 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 200924A ( Fermi GBM team, GCN 28489) errorbox 60129 sec after notice time and 60192 sec after trigger time at 2020-09-25 01:58:33 UT, with upper limit up to 15.3 mag. The observations began at zenith distance = 27 deg. The sun altitude is -42.6 deg. The galactic latitude b = -42 deg., longitude l = 340 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1448070 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 60223 | 2020-09-25 01:58:33 | MASTER-OAFA | (20h 49m 51.22s , -56d 45m 39.8s) | C | 60 | 14.1 | 60302 | 2020-09-25 01:59:52 | MASTER-OAFA | (20h 58m 38.41s , -58d 46m 15.3s) | C | 60 | 14.4 | 60382 | 2020-09-25 02:01:12 | MASTER-OAFA | (21h 18m 29.02s , -56d 46m 11.2s) | C | 60 | 14.7 | 60461 | 2020-09-25 02:02:32 | MASTER-OAFA | (21h 10m 38.64s , -54d 48m 00.6s) | C | 60 | 14.4 | 60541 | 2020-09-25 02:03:51 | MASTER-OAFA | (20h 49m 54.34s , -56d 47m 10.7s) | C | 60 | 14.0 | 60620 | 2020-09-25 02:05:11 | MASTER-OAFA | (21h 04m 11.26s , -56d 45m 59.3s) | C | 60 | 14.3 | 60700 | 2020-09-25 02:06:30 | MASTER-OAFA | (20h 58m 35.48s , -58d 47m 45.6s) | C | 60 | 14.2 | 60779 | 2020-09-25 02:07:50 | MASTER-OAFA | (21h 13m 45.91s , -58d 46m 14.1s) | C | 60 | 14.4 | 60859 | 2020-09-25 02:09:09 | MASTER-OAFA | (21h 18m 29.63s , -56d 47m 10.6s) | C | 60 | 14.5 | 60938 | 2020-09-25 02:10:29 | MASTER-OAFA | (21h 32m 50.07s , -56d 46m 25.7s) | C | 60 | 14.9 | 61018 | 2020-09-25 02:11:48 | MASTER-OAFA | (20h 43m 22.03s , -54d 47m 26.8s) | C | 60 | 14.1 | 61098 | 2020-09-25 02:13:08 | MASTER-OAFA | (21h 09m 59.77s , -60d 46m 15.1s) | C | 60 | 14.4 | 61177 | 2020-09-25 02:14:28 | MASTER-OAFA | (21h 10m 42.46s , -54d 47m 36.9s) | C | 60 | 14.5 | 61257 | 2020-09-25 02:15:47 | MASTER-OAFA | (21h 24m 24.41s , -54d 46m 37.7s) | C | 60 | 14.9 | 61337 | 2020-09-25 02:17:07 | MASTER-OAFA | (21h 04m 07.90s , -56d 46m 53.8s) | C | 60 | 14.8 | 61416 | 2020-09-25 02:18:27 | MASTER-OAFA | (21h 13m 40.79s , -58d 46m 06.5s) | C | 60 | 15.3 | 61496 | 2020-09-25 02:19:46 | MASTER-OAFA | (21h 32m 54.91s , -56d 47m 24.9s) | C | 60 | 15.0 | 61775 | 2020-09-25 02:24:25 | MASTER-OAFA | (20h 43m 28.21s , -54d 47m 10.1s) | C | 60 | 14.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.