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GCN Circular 28578

Baksan Neutrino Observatory Alert 201008.47: Global MASTER-Net observations report
2020-10-08T13:21:07Z (4 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, I.Gorbunov, D.Vlasenko, 
V.Vladimirov, A.Kuznetsov,  A. Chasovnikov, V.Topolev, D.Kuvshinov, F.Balakin, V.A. Senik
(Lomonosov Moscow State University, SAI, Physics Department),

V.B. Petkov, M.M. Boliev, A.N. Kurenya,
(Baksan Neutrino Observatory, Institute for Nuclear Research of RAS, Moscow, Russia),

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres 
(The Instituto de Astrofisica de Canarias),

D. Buckley 
(South African Astronomical Observatory),

N.M. Budnev, O. Gress,  O.Ershova 
(Applied Physics Institute, Irkutsk State University),

V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev 
(Blagoveschensk Educational State University),

A. Tlatov,  D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

R. Podesta, C. Lopez, C.Francile, F. Podesta 
(Observatorio Astronomico Felix Aguilar OAFA, San Juan National University),

(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE  SJNU)

MASTER-Tunka robotic telescope  (Global MASTER-Net:, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Baksan Neutrino Observatory Alert 201008.47 (trigger No 1652872203,23h 08m 00.00s , -20d 18m 00.0s, R=3) errorbox  3695 sec after notice time and 4296 sec after trigger time at 2020-10-08 12:21:39 UT, with upper limit up to  16.2 mag. The observations began at zenith distance = 79 deg. The sun  altitude  is -18.3 deg. 

The galactic latitude b = -66 deg., longitude l = 45 deg.

Real time updated cover map and OT discovered available here:

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment

    4326 | 2020-10-08 12:21:39 |        MASTER-Tunka | (22h 53m 53.20s , -20d 19m 15.8s) |   C |    60 | 15.0 |        
    4863 | 2020-10-08 12:30:35 |        MASTER-Tunka | (22h 54m 10.63s , -18d 19m 00.1s) |   C |    60 | 15.7 |        
    4942 | 2020-10-08 12:31:55 |        MASTER-Tunka | (23h 11m 06.59s , -18d 20m 18.9s) |   C |    60 | 16.2 |        
    5101 | 2020-10-08 12:34:34 |        MASTER-Tunka | (23h 10m 48.27s , -20d 19m 21.8s) |   C |    60 | 15.8 |        
Filter C is a clear (unfiltred) band. 

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