TITLE: GCN CIRCULAR NUMBER: 38380 SUBJECT: Swift GRB 241128A: Global MASTER-Net observations report DATE: 24/11/29 10:38:36 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-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the Swift GRB 241128A ( R. Brivio et al., GCN 38367) errorbox 65606 sec after notice time and 65649 sec after trigger time at 2024-11-29 10:28:43 UT, with upper limit up to 19.3 mag. Observations started at twilight. The observations began at zenith distance = 43 deg. The sun altitude is -12.6 deg.
The galactic latitude b = 21 deg., longitude l = 61 deg.
Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2687409
We obtain a following upper limits.
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________
65694 | MASTER-Tunka | C | 90 | 19.1 | 65798 | MASTER-Tunka | C | 90 | 19.2 | 65887 | MASTER-Tunka | C | 60 | 19.3 | Filter C is a clear (unfiltred) band.
The observation and reduction will continue. The message may be cited.
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