TITLE: GCN CIRCULAR NUMBER: 36013 SUBJECT: Fermi GRB 240402A: Global MASTER-Net observations report DATE: 24/04/03 00:31:29 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (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. Gress, N.M. Budnev, O.Ershova (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), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 240402A ( Fermi GBM team, GCN 36012) errorbox 56 sec after notice time and 92 sec after trigger time at 2024-04-02 23:45:36 UT, with upper limit up to 19.8 mag. The observations began at zenith distance = 17 deg. The sun altitude is -30.8 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 240402A errorbox 283 sec after notice time and 318 sec after trigger time at 2024-04-02 23:49:23 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 78 deg. The sun altitude is -59.0 deg. The galactic latitude b = 65 deg., longitude l = 44 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2413376 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 182 | 2024-04-02 23:45:36 | MASTER-Kislovodsk | (15h 12m 58.69s , +25d 58m 16.1s) | C | 180 | 19.2 | 182 | 2024-04-02 23:45:36 | MASTER-Kislovodsk | (15h 08m 03.72s , +26d 20m 19.6s) | C | 180 | 19.8 | 330 | 2024-04-02 23:49:03 | MASTER-Kislovodsk | (16h 13m 25.97s , +37d 31m 16.3s) | C | 60 | 18.3 | 330 | 2024-04-02 23:49:03 | MASTER-Kislovodsk | (16h 19m 02.25s , +37d 08m 45.3s) | C | 60 | 19.1 | 349 | 2024-04-02 23:49:23 | MASTER-SAAO | (16h 19m 55.22s , +38d 58m 47.5s) | C | 60 | 16.1 | 421 | 2024-04-02 23:50:35 | MASTER-Kislovodsk | (16h 14m 08.44s , +35d 13m 37.9s) | C | 60 | 19.0 | 425 | 2024-04-02 23:50:39 | MASTER-Kislovodsk | (16h 08m 40.42s , +35d 36m 13.1s) | C | 60 | 18.1 | 443 | 2024-04-02 23:50:57 | MASTER-SAAO | (16h 00m 22.97s , +39d 01m 30.8s) | C | 60 | 17.7 | 505 | 2024-04-02 23:51:59 | MASTER-Kislovodsk | (16h 27m 17.68s , +41d 17m 25.8s) | C | 60 | 18.2 | 505 | 2024-04-02 23:51:59 | MASTER-Kislovodsk | (16h 33m 11.34s , +40d 54m 41.2s) | C | 60 | 19.1 | 535 | 2024-04-02 23:52:29 | MASTER-SAAO | (15h 54m 33.78s , +37d 07m 14.2s) | C | 60 | 17.8 | 585 | 2024-04-02 23:53:19 | MASTER-Kislovodsk | (16h 27m 18.43s , +35d 35m 04.3s) | C | 60 | 18.1 | 586 | 2024-04-02 23:53:19 | MASTER-Kislovodsk | (16h 32m 45.73s , +35d 12m 25.9s) | C | 60 | 18.9 | 628 | 2024-04-02 23:54:02 | MASTER-SAAO | (16h 05m 06.50s , +33d 19m 48.0s) | C | 60 | 17.9 | 666 | 2024-04-02 23:54:39 | MASTER-Kislovodsk | (16h 15m 46.11s , +43d 13m 38.4s) | C | 60 | 18.2 | 666 | 2024-04-02 23:54:39 | MASTER-Kislovodsk | (16h 21m 50.67s , +42d 50m 47.1s) | C | 60 | 19.0 | 720 | 2024-04-02 23:55:34 | MASTER-SAAO | (15h 50m 12.26s , +35d 13m 34.4s) | C | 60 | 17.9 | 746 | 2024-04-02 23:56:00 | MASTER-Kislovodsk | (16h 23m 15.40s , +33d 41m 08.3s) | C | 60 | 18.0 | 746 | 2024-04-02 23:56:00 | MASTER-Kislovodsk | (16h 28m 35.35s , +33d 18m 27.6s) | C | 60 | 19.0 | 815 | 2024-04-02 23:57:09 | MASTER-SAAO | (15h 55m 25.17s , +42d 48m 09.2s) | C | 60 | 15.9 | 826 | 2024-04-02 23:57:20 | MASTER-Kislovodsk | (16h 36m 37.66s , +43d 13m 21.7s) | C | 60 | 17.9 | 907 | 2024-04-02 23:58:40 | MASTER-Kislovodsk | (15h 40m 20.30s , +39d 24m 34.9s) | C | 60 | 18.3 | 907 | 2024-04-02 23:58:40 | MASTER-Kislovodsk | (15h 46m 05.32s , +39d 01m 06.7s) | C | 60 | 19.1 | 909 | 2024-04-02 23:58:43 | MASTER-SAAO | (16h 02m 45.99s , +31d 24m 25.4s) | C | 60 | 18.1 | 988 | 2024-04-03 00:00:02 | MASTER-Kislovodsk | (16h 20m 24.70s , +31d 48m 55.2s) | C | 60 | 18.1 | 988 | 2024-04-03 00:00:02 | MASTER-Kislovodsk | (16h 25m 37.89s , +31d 25m 23.4s) | C | 60 | 19.1 | 1001 | 2024-04-03 00:00:15 | MASTER-SAAO | (15h 46m 56.79s , +33d 20m 42.9s) | C | 60 | 18.1 | 1068 | 2024-04-03 00:01:22 | MASTER-Kislovodsk | (16h 04m 35.13s , +45d 07m 13.7s) | C | 60 | 18.0 | 1068 | 2024-04-03 00:01:22 | MASTER-Kislovodsk | (16h 10m 52.08s , +44d 43m 13.8s) | C | 60 | 19.0 | 1105 | 2024-04-03 00:01:59 | MASTER-SAAO | (16h 46m 04.76s , +35d 10m 14.6s) | C | 60 | 16.8 | 1149 | 2024-04-03 00:02:42 | MASTER-Kislovodsk | (16h 41m 26.99s , +33d 40m 45.2s) | C | 60 | 18.1 | 1149 | 2024-04-03 00:02:42 | MASTER-Kislovodsk | (16h 46m 46.14s , +33d 17m 15.8s) | C | 60 | 19.0 | 1201 | 2024-04-03 00:03:35 | MASTER-SAAO | (15h 35m 39.18s , +37d 09m 08.1s) | C | 60 | 17.9 | 1391 | 2024-04-03 00:06:45 | MASTER-SAAO | (14h 53m 45.28s , +14d 23m 05.9s) | C | 60 | 18.5 | 1493 | 2024-04-03 00:07:27 | MASTER-Kislovodsk | (14h 58m 58.63s , +24d 04m 51.1s) | C | 180 | 18.9 | 1493 | 2024-04-03 00:07:27 | MASTER-Kislovodsk | (14h 54m 12.44s , +24d 27m 07.2s) | C | 180 | 19.5 | 1488 | 2024-04-03 00:08:22 | MASTER-SAAO | (16h 20m 04.04s , +39d 00m 18.3s) | C | 60 | 16.8 | 1581 | 2024-04-03 00:09:55 | MASTER-SAAO | (16h 00m 22.64s , +39d 00m 24.8s) | C | 60 | 17.7 | 1640 | 2024-04-03 00:10:54 | MASTER-Kislovodsk | (16h 13m 26.45s , +37d 29m 49.3s) | C | 60 | 18.4 | 1640 | 2024-04-03 00:10:54 | MASTER-Kislovodsk | (16h 19m 02.71s , +37d 07m 14.4s) | C | 60 | 19.1 | 1673 | 2024-04-03 00:11:27 | MASTER-SAAO | (15h 54m 43.06s , +37d 07m 09.0s) | C | 60 | 18.0 | 1721 | 2024-04-03 00:12:14 | MASTER-Kislovodsk | (16h 08m 38.80s , +35d 37m 20.6s) | C | 60 | 18.1 | 1721 | 2024-04-03 00:12:14 | MASTER-Kislovodsk | (16h 14m 06.47s , +35d 13m 52.5s) | C | 60 | 19.0 | 1765 | 2024-04-03 00:12:59 | MASTER-SAAO | (16h 05m 12.80s , +33d 20m 02.1s) | C | 60 | 17.7 | 1801 | 2024-04-03 00:13:35 | MASTER-Kislovodsk | (16h 27m 14.87s , +41d 18m 41.7s) | C | 60 | 17.9 | 1801 | 2024-04-03 00:13:35 | MASTER-Kislovodsk | (16h 33m 08.42s , +40d 54m 57.1s) | C | 60 | 18.8 | 1857 | 2024-04-03 00:14:31 | MASTER-SAAO | (15h 50m 14.26s , +35d 13m 11.9s) | C | 60 | 17.7 | 1857 | 2024-04-03 00:14:31 | MASTER-SAAO | (15h 48m 06.98s , +35d 26m 14.8s) | C | 60 | 17.2 | 1881 | 2024-04-03 00:14:55 | MASTER-Kislovodsk | (16h 27m 12.81s , +35d 37m 13.4s) | C | 60 | 18.1 | 1881 | 2024-04-03 00:14:55 | MASTER-Kislovodsk | (16h 32m 40.09s , +35d 13m 39.0s) | C | 60 | 19.0 | 1937 | 2024-04-03 00:15:51 | MASTER-SAAO | (15h 53m 16.83s , +43d 03m 43.3s) | C | 60 | 16.0 | 1937 | 2024-04-03 00:15:51 | MASTER-SAAO | (15h 55m 37.69s , +42d 50m 39.4s) | C | 60 | 16.4 | 1968 | 2024-04-03 00:16:22 | MASTER-Kislovodsk | (16h 15m 48.39s , +43d 12m 59.3s) | C | 60 | 18.2 | 1968 | 2024-04-03 00:16:22 | MASTER-Kislovodsk | (16h 21m 53.26s , +42d 49m 15.1s) | C | 60 | 19.0 | 2016 | 2024-04-03 00:17:10 | MASTER-SAAO | (16h 00m 41.87s , +31d 38m 28.9s) | C | 60 | 17.4 | 2016 | 2024-04-03 00:17:10 | MASTER-SAAO | (16h 02m 43.92s , +31d 25m 26.0s) | C | 60 | 17.8 | 2048 | 2024-04-03 00:17:42 | MASTER-Kislovodsk | (16h 23m 10.32s , +33d 41m 12.0s) | C | 60 | 18.0 | 2048 | 2024-04-03 00:17:42 | MASTER-Kislovodsk | (16h 28m 30.12s , +33d 17m 37.9s) | C | 60 | 19.0 | 2096 | 2024-04-03 00:18:30 | MASTER-SAAO | (15h 44m 53.33s , +33d 34m 17.4s) | C | 60 | 17.4 | 2096 | 2024-04-03 00:18:30 | MASTER-SAAO | (15h 46m 57.91s , +33d 21m 14.9s) | C | 60 | 17.6 | 2128 | 2024-04-03 00:19:02 | MASTER-Kislovodsk | (16h 36m 35.85s , +43d 12m 09.6s) | C | 60 | 18.0 | 2176 | 2024-04-03 00:19:49 | MASTER-SAAO | (16h 44m 02.30s , +35d 24m 23.6s) | C | 60 | 16.1 | 2176 | 2024-04-03 00:19:49 | MASTER-SAAO | (16h 46m 09.16s , +35d 11m 18.5s) | C | 60 | 16.4 | 2212 | 2024-04-03 00:20:26 | MASTER-Kislovodsk | (15h 42m 05.91s , +39d 17m 26.2s) | C | 60 | 18.3 | 2212 | 2024-04-03 00:20:26 | MASTER-Kislovodsk | (15h 36m 18.02s , +39d 39m 32.1s) | C | 60 | 19.1 | 2255 | 2024-04-03 00:21:09 | MASTER-SAAO | (15h 33m 24.47s , +37d 20m 59.2s) | C | 60 | 17.2 | 2255 | 2024-04-03 00:21:09 | MASTER-SAAO | (15h 35m 34.79s , +37d 07m 56.8s) | C | 60 | 17.3 | 2298 | 2024-04-03 00:21:51 | MASTER-Kislovodsk | (16h 25m 40.93s , +31d 23m 52.6s) | C | 60 | 19.1 | 2298 | 2024-04-03 00:21:51 | MASTER-Kislovodsk | (16h 20m 27.98s , +31d 47m 16.2s) | C | 60 | 18.1 | 2335 | 2024-04-03 00:22:29 | MASTER-SAAO | (16h 16m 59.52s , +29d 43m 12.7s) | C | 60 | 17.4 | 2378 | 2024-04-03 00:23:12 | MASTER-Kislovodsk | (16h 04m 34.59s , +45d 07m 57.2s) | C | 60 | 18.1 | 2378 | 2024-04-03 00:23:12 | MASTER-Kislovodsk | (16h 10m 51.11s , +44d 44m 45.0s) | C | 60 | 18.9 | 2458 | 2024-04-03 00:24:32 | MASTER-Kislovodsk | (16h 41m 25.01s , +33d 41m 59.4s) | C | 60 | 18.1 | 2458 | 2024-04-03 00:24:32 | MASTER-Kislovodsk | (16h 46m 44.92s , +33d 19m 30.3s) | C | 60 | 19.0 | 2538 | 2024-04-03 00:25:52 | MASTER-Kislovodsk | (16h 13m 23.00s , +37d 31m 10.7s) | C | 60 | 18.3 | 2538 | 2024-04-03 00:25:52 | MASTER-Kislovodsk | (16h 18m 58.79s , +37d 07m 57.4s) | C | 60 | 19.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/36013. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...