[vsnet-grb-info 37646] IceCube Alert 250309.32: Global MASTER-Net observations report

TITLE: GCN CIRCULAR NUMBER: 39630 SUBJECT: IceCube Alert 250309.32: Global MASTER-Net observations report DATE: 25/03/09 09:39:41 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs lipunov@xray.sai.msu.ru

V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko, A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity) D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)

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) was pointed to the IceCube Alert 250309.32 (trigger No 1288692,14h 03m 12.24s , -10d 26m 24.0s, R=0.51) errorbox 9 sec after notice time and 109 sec after trigger time at 2025-03-09 07:37:54 UT, with upper limit up to 21.3 mag. The observations began at zenith distance = 21 deg. The sun altitude is -35.6 deg.

The galactic latitude b = 48 deg., longitude l = 331 deg.

Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2805613

We obtain a following upper limits.

Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________

120 | 2025-03-09 07:37:54 | MASTER-OAFA | (14h 12m 24.48s , -09d 45m 33.8s) | C | 20 | 18.1 | 135 | 2025-03-09 07:37:54 | MASTER-OAFA | (14h 12m 24.47s , -09d 45m 33.7s) | C | 50 | 18.7 | Coadd 120 | 2025-03-09 07:37:54 | MASTER-OAFA | (14h 03m 05.50s , -10d 07m 35.4s) | C | 20 | 20.1 | 155 | 2025-03-09 07:37:54 | MASTER-OAFA | (14h 03m 05.50s , -10d 07m 35.4s) | C | 90 | 21.1 | Coadd 490 | 2025-03-09 07:37:54 | MASTER-OAFA | (14h 03m 05.50s , -10d 07m 35.4s) | C | 760 | 21.0 | Coadd 154 | 2025-03-09 07:38:34 | MASTER-OAFA | (14h 12m 24.51s , -09d 45m 31.7s) | C | 10 | 17.5 | 165 | 2025-03-09 07:38:34 | MASTER-OAFA | (14h 03m 05.53s , -10d 07m 33.6s) | C | 30 | 20.4 | 196 | 2025-03-09 07:39:10 | MASTER-OAFA | (14h 12m 24.55s , -09d 45m 29.5s) | C | 20 | 18.1 | 206 | 2025-03-09 07:39:10 | MASTER-OAFA | (14h 03m 05.54s , -10d 07m 32.1s) | C | 40 | 20.6 | 247 | 2025-03-09 07:39:56 | MASTER-OAFA | (14h 12m 24.59s , -09d 45m 27.0s) | C | 30 | 18.6 | 292 | 2025-03-09 07:39:56 | MASTER-OAFA | (14h 12m 24.59s , -09d 45m 27.0s) | C | 120 | 19.6 | Coadd 257 | 2025-03-09 07:39:57 | MASTER-OAFA | (14h 03m 05.56s , -10d 07m 30.4s) | C | 50 | 20.7 | 322 | 2025-03-09 07:39:57 | MASTER-OAFA | (14h 03m 05.56s , -10d 07m 30.5s) | C | 180 | 21.0 | Coadd 308 | 2025-03-09 07:40:52 | MASTER-OAFA | (14h 12m 24.62s , -09d 45m 24.4s) | C | 40 | 18.7 | 318 | 2025-03-09 07:40:53 | MASTER-OAFA | (14h 03m 05.58s , -10d 07m 28.6s) | C | 60 | 20.8 | 379 | 2025-03-09 07:41:58 | MASTER-OAFA | (14h 12m 24.64s , -09d 45m 21.7s) | C | 50 | 18.9 | 389 | 2025-03-09 07:41:59 | MASTER-OAFA | (14h 03m 05.59s , -10d 07m 26.6s) | C | 70 | 20.8 | 466 | 2025-03-09 07:43:15 | MASTER-OAFA | (14h 12m 24.68s , -09d 45m 18.7s) | C | 70 | 19.0 | 566 | 2025-03-09 07:43:15 | MASTER-OAFA | (14h 12m 24.69s , -09d 45m 18.7s) | C | 270 | 20.2 | Coadd 476 | 2025-03-09 07:43:15 | MASTER-OAFA | (14h 03m 05.61s , -10d 07m 24.2s) | C | 90 | 20.9 | 596 | 2025-03-09 07:43:15 | MASTER-OAFA | (14h 03m 05.61s , -10d 07m 24.2s) | C | 330 | 21.3 | Coadd 572 | 2025-03-09 07:44:51 | MASTER-OAFA | (14h 12m 24.72s , -09d 45m 15.1s) | C | 90 | 19.3 | 582 | 2025-03-09 07:44:51 | MASTER-OAFA | (14h 03m 05.63s , -10d 07m 21.3s) | C | 110 | 20.9 | 698 | 2025-03-09 07:46:47 | MASTER-OAFA | (14h 12m 24.74s , -09d 45m 11.3s) | C | 110 | 19.5 | 708 | 2025-03-09 07:46:47 | MASTER-OAFA | (14h 03m 05.66s , -10d 07m 17.9s) | C | 130 | 20.8 | 849 | 2025-03-09 07:49:03 | MASTER-OAFA | (14h 12m 24.76s , -09d 45m 07.0s) | C | 140 | 19.5 | 1009 | 2025-03-09 07:49:03 | MASTER-OAFA | (14h 12m 24.76s , -09d 45m 07.0s) | C | 460 | 20.3 | Coadd 859 | 2025-03-09 07:49:03 | MASTER-OAFA | (14h 03m 05.69s , -10d 07m 14.1s) | C | 160 | 20.7 | 1039 | 2025-03-09 07:49:03 | MASTER-OAFA | (14h 03m 05.69s , -10d 07m 14.1s) | C | 520 | 20.5 | Coadd 1025 | 2025-03-09 07:51:50 | MASTER-OAFA | (14h 12m 24.78s , -09d 45m 02.4s) | C | 160 | 19.7 | 1036 | 2025-03-09 07:51:50 | MASTER-OAFA | (14h 03m 05.70s , -10d 07m 09.7s) | C | 180 | 20.6 | 1212 | 2025-03-09 07:54:56 | MASTER-OAFA | (14h 12m 24.76s , -09d 44m 57.9s) | C | 160 | 19.6 | 1222 | 2025-03-09 07:54:56 | MASTER-OAFA | (14h 03m 05.69s , -10d 07m 05.4s) | C | 180 | 20.6 | 1398 | 2025-03-09 07:58:02 | MASTER-OAFA | (14h 12m 24.74s , -09d 44m 53.3s) | C | 160 | 19.8 | 1558 | 2025-03-09 07:58:02 | MASTER-OAFA | (14h 12m 24.74s , -09d 44m 53.3s) | C | 480 | 20.3 | Coadd 1408 | 2025-03-09 07:58:03 | MASTER-OAFA | (14h 03m 05.69s , -10d 07m 00.9s) | C | 180 | 20.6 | 1588 | 2025-03-09 07:58:03 | MASTER-OAFA | (14h 03m 05.69s , -10d 07m 00.9s) | C | 540 | 20.5 | Coadd 1584 | 2025-03-09 08:01:08 | MASTER-OAFA | (14h 12m 24.74s , -09d 44m 49.1s) | C | 160 | 19.7 | 1594 | 2025-03-09 08:01:08 | MASTER-OAFA | (14h 03m 05.70s , -10d 06m 56.7s) | C | 180 | 20.6 | 1770 | 2025-03-09 08:04:15 | MASTER-OAFA | (14h 12m 24.73s , -09d 44m 44.9s) | C | 160 | 19.6 | 1781 | 2025-03-09 08:04:15 | MASTER-OAFA | (14h 03m 05.73s , -10d 06m 52.4s) | C | 180 | 20.7 | 1957 | 2025-03-09 08:07:21 | MASTER-OAFA | (14h 12m 24.72s , -09d 44m 40.7s) | C | 160 | 19.7 | 2117 | 2025-03-09 08:07:21 | MASTER-OAFA | (14h 12m 24.72s , -09d 44m 40.7s) | C | 480 | 20.3 | Coadd 1967 | 2025-03-09 08:07:22 | MASTER-OAFA | (14h 03m 05.75s , -10d 06m 48.3s) | C | 180 | 20.5 | 2147 | 2025-03-09 08:07:22 | MASTER-OAFA | (14h 03m 05.76s , -10d 06m 48.4s) | C | 540 | 20.5 | Coadd 2143 | 2025-03-09 08:10:27 | MASTER-OAFA | (14h 12m 24.71s , -09d 44m 36.8s) | C | 160 | 19.6 | 2153 | 2025-03-09 08:10:28 | MASTER-OAFA | (14h 03m 05.79s , -10d 06m 44.3s) | C | 180 | 20.6 | 2329 | 2025-03-09 08:13:34 | MASTER-OAFA | (14h 12m 24.71s , -09d 44m 33.2s) | C | 160 | 19.7 | 2340 | 2025-03-09 08:13:34 | MASTER-OAFA | (14h 03m 05.84s , -10d 06m 40.6s) | C | 180 | 20.8 | 2515 | 2025-03-09 08:16:39 | MASTER-OAFA | (14h 12m 24.68s , -09d 44m 29.5s) | C | 160 | 19.7 | 2675 | 2025-03-09 08:16:39 | MASTER-OAFA | (14h 12m 24.68s , -09d 44m 29.5s) | C | 480 | 20.3 | Coadd 2526 | 2025-03-09 08:16:40 | MASTER-OAFA | (14h 03m 05.85s , -10d 06m 36.6s) | C | 180 | 20.6 | 2706 | 2025-03-09 08:16:40 | MASTER-OAFA | (14h 03m 05.85s , -10d 06m 36.6s) | C | 540 | 20.7 | Coadd 2702 | 2025-03-09 08:19:46 | MASTER-OAFA | (14h 12m 24.68s , -09d 44m 25.6s) | C | 160 | 19.6 | 2712 | 2025-03-09 08:19:46 | MASTER-OAFA | (14h 03m 05.90s , -10d 06m 32.8s) | C | 180 | 20.7 | 2888 | 2025-03-09 08:22:52 | MASTER-OAFA | (14h 12m 24.64s , -09d 44m 22.0s) | C | 160 | 19.6 | 2898 | 2025-03-09 08:22:52 | MASTER-OAFA | (14h 03m 05.91s , -10d 06m 28.7s) | C | 180 | 20.7 | 3074 | 2025-03-09 08:25:58 | MASTER-OAFA | (14h 12m 24.59s , -09d 44m 18.7s) | C | 160 | 19.6 | 3234 | 2025-03-09 08:25:58 | MASTER-OAFA | (14h 12m 24.59s , -09d 44m 18.6s) | C | 480 | 20.5 | Coadd 3084 | 2025-03-09 08:25:59 | MASTER-OAFA | (14h 03m 05.93s , -10d 06m 25.4s) | C | 180 | 20.8 | 3264 | 2025-03-09 08:25:59 | MASTER-OAFA | (14h 03m 05.93s , -10d 06m 25.3s) | C | 540 | 20.6 | Coadd 3260 | 2025-03-09 08:29:05 | MASTER-OAFA | (14h 12m 24.55s , -09d 44m 15.1s) | C | 160 | 19.7 | 3271 | 2025-03-09 08:29:05 | MASTER-OAFA | (14h 03m 05.93s , -10d 06m 21.3s) | C | 180 | 20.6 | 3447 | 2025-03-09 08:32:11 | MASTER-OAFA | (14h 12m 24.52s , -09d 44m 11.8s) | C | 160 | 19.6 | 3457 | 2025-03-09 08:32:11 | MASTER-OAFA | (14h 03m 05.91s , -10d 06m 17.9s) | C | 180 | 20.6 | 3633 | 2025-03-09 08:35:18 | MASTER-OAFA | (14h 12m 24.48s , -09d 44m 08.4s) | C | 160 | 19.7 | 3793 | 2025-03-09 08:35:18 | MASTER-OAFA | (14h 12m 24.48s , -09d 44m 08.5s) | C | 480 | 20.4 | Coadd 3644 | 2025-03-09 08:35:18 | MASTER-OAFA | (14h 03m 05.92s , -10d 06m 14.4s) | C | 180 | 20.6 | 3824 | 2025-03-09 08:35:18 | MASTER-OAFA | (14h 03m 05.92s , -10d 06m 14.3s) | C | 540 | 20.5 | Coadd 3819 | 2025-03-09 08:38:24 | MASTER-OAFA | (14h 12m 24.44s , -09d 44m 05.3s) | C | 160 | 19.7 | 3830 | 2025-03-09 08:38:24 | MASTER-OAFA | (14h 03m 05.93s , -10d 06m 11.1s) | C | 180 | 20.6 | 4006 | 2025-03-09 08:41:30 | MASTER-OAFA | (14h 12m 24.42s , -09d 44m 02.4s) | C | 160 | 19.7 | 4016 | 2025-03-09 08:41:30 | MASTER-OAFA | (14h 03m 05.95s , -10d 06m 07.8s) | C | 180 | 20.6 | 4192 | 2025-03-09 08:44:36 | MASTER-OAFA | (14h 12m 24.38s , -09d 43m 59.5s) | C | 160 | 19.7 | 4352 | 2025-03-09 08:44:36 | MASTER-OAFA | (14h 12m 24.38s , -09d 43m 59.4s) | C | 480 | 20.4 | Coadd 4202 | 2025-03-09 08:44:36 | MASTER-OAFA | (14h 03m 05.96s , -10d 06m 04.4s) | C | 180 | 20.6 | 4382 | 2025-03-09 08:44:36 | MASTER-OAFA | (14h 03m 05.96s , -10d 06m 04.4s) | C | 540 | 20.6 | Coadd 4378 | 2025-03-09 08:47:42 | MASTER-OAFA | (14h 12m 24.33s , -09d 43m 56.5s) | C | 160 | 19.6 | 4388 | 2025-03-09 08:47:42 | MASTER-OAFA | (14h 03m 05.98s , -10d 06m 01.1s) | C | 180 | 20.6 | 4564 | 2025-03-09 08:50:48 | MASTER-OAFA | (14h 12m 24.26s , -09d 43m 53.8s) | C | 160 | 19.7 | 4574 | 2025-03-09 08:50:48 | MASTER-OAFA | (14h 03m 06.00s , -10d 05m 58.2s) | C | 180 | 20.6 | 4750 | 2025-03-09 08:53:54 | MASTER-OAFA | (14h 12m 24.22s , -09d 43m 51.1s) | C | 160 | 19.8 | 4910 | 2025-03-09 08:53:54 | MASTER-OAFA | (14h 12m 24.22s , -09d 43m 51.1s) | C | 480 | 20.4 | Coadd 4760 | 2025-03-09 08:53:54 | MASTER-OAFA | (14h 03m 06.02s , -10d 05m 55.4s) | C | 180 | 20.7 | 4940 | 2025-03-09 08:53:54 | MASTER-OAFA | (14h 03m 06.02s , -10d 05m 55.4s) | C | 540 | 20.7 | Coadd 4936 | 2025-03-09 08:57:00 | MASTER-OAFA | (14h 12m 24.13s , -09d 43m 48.7s) | C | 160 | 19.6 | 4946 | 2025-03-09 08:57:00 | MASTER-OAFA | (14h 03m 06.02s , -10d 05m 52.7s) | C | 180 | 20.6 | 5122 | 2025-03-09 09:00:06 | MASTER-OAFA | (14h 12m 24.08s , -09d 43m 46.1s) | C | 160 | 19.7 | 5132 | 2025-03-09 09:00:06 | MASTER-OAFA | (14h 03m 06.03s , -10d 05m 50.1s) | C | 180 | 20.6 | 5307 | 2025-03-09 09:03:12 | MASTER-OAFA | (14h 12m 24.05s , -09d 43m 43.6s) | C | 160 | 19.7 | 5467 | 2025-03-09 09:03:12 | MASTER-OAFA | (14h 12m 24.05s , -09d 43m 43.6s) | C | 480 | 20.3 | Coadd 5318 | 2025-03-09 09:03:12 | MASTER-OAFA | (14h 03m 06.04s , -10d 05m 47.4s) | C | 180 | 20.7 | 5498 | 2025-03-09 09:03:12 | MASTER-OAFA | (14h 03m 06.04s , -10d 05m 47.4s) | C | 540 | 20.6 | Coadd 5493 | 2025-03-09 09:06:18 | MASTER-OAFA | (14h 12m 24.00s , -09d 43m 41.3s) | C | 160 | 19.6 | 5504 | 2025-03-09 09:06:18 | MASTER-OAFA | (14h 03m 06.04s , -10d 05m 44.8s) | C | 180 | 20.6 | 5680 | 2025-03-09 09:09:24 | MASTER-OAFA | (14h 12m 23.93s , -09d 43m 39.2s) | C | 160 | 19.6 | 5690 | 2025-03-09 09:09:24 | MASTER-OAFA | (14h 03m 06.09s , -10d 05m 42.5s) | C | 180 | 20.6 | 5866 | 2025-03-09 09:12:30 | MASTER-OAFA | (14h 12m 23.88s , -09d 43m 37.0s) | C | 160 | 19.6 | 6026 | 2025-03-09 09:12:30 | MASTER-OAFA | (14h 12m 23.88s , -09d 43m 37.0s) | C | 480 | 20.3 | Coadd 5876 | 2025-03-09 09:12:31 | MASTER-OAFA | (14h 03m 06.10s , -10d 05m 40.2s) | C | 180 | 20.6 | 6056 | 2025-03-09 09:12:31 | MASTER-OAFA | (14h 03m 06.10s , -10d 05m 40.2s) | C | 540 | 20.4 | Coadd 6052 | 2025-03-09 09:15:36 | MASTER-OAFA | (14h 12m 23.83s , -09d 43m 35.0s) | C | 160 | 19.6 | 6062 | 2025-03-09 09:15:36 | MASTER-OAFA | (14h 03m 06.11s , -10d 05m 38.0s) | C | 180 | 20.6 | 6238 | 2025-03-09 09:18:42 | MASTER-OAFA | (14h 12m 23.77s , -09d 43m 33.0s) | C | 160 | 19.6 | 6248 | 2025-03-09 09:18:42 | MASTER-OAFA | (14h 03m 06.11s , -10d 05m 35.8s) | C | 180 | 20.7 | 6424 | 2025-03-09 09:21:48 | MASTER-OAFA | (14h 12m 23.72s , -09d 43m 31.3s) | C | 160 | 19.5 | 6584 | 2025-03-09 09:21:48 | MASTER-OAFA | (14h 12m 23.72s , -09d 43m 31.3s) | C | 480 | 20.3 | Coadd 6434 | 2025-03-09 09:21:49 | MASTER-OAFA | (14h 03m 06.12s , -10d 05m 33.9s) | C | 180 | 20.6 | 6610 | 2025-03-09 09:24:54 | MASTER-OAFA | (14h 12m 23.65s , -09d 43m 29.5s) | C | 160 | 19.5 | 6620 | 2025-03-09 09:24:55 | MASTER-OAFA | (14h 03m 06.14s , -10d 05m 31.9s) | C | 180 | 20.6 | 6796 | 2025-03-09 09:28:00 | MASTER-OAFA | (14h 12m 23.59s , -09d 43m 27.9s) | C | 160 | 19.4 | 6806 | 2025-03-09 09:28:01 | MASTER-OAFA | (14h 03m 06.16s , -10d 05m 30.1s) | C | 180 | 20.5 | 6983 | 2025-03-09 09:31:07 | MASTER-OAFA | (14h 12m 23.52s , -09d 43m 26.7s) | C | 160 | 19.2 | 6993 | 2025-03-09 09:31:07 | MASTER-OAFA | (14h 03m 06.19s , -10d 05m 28.9s) | C | 180 | 20.4 | Filter C is a clear (unfiltred) band.

The observation and reduction will continue. The message may be cited.

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