V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, K.Zhirkov, P.Balanutsa,A.Kuznetsov,F.Balakin,
V.Vladimirov, A.Chasovnikov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Topolev, V.Senik, T.Pogrosheva,
D.Kuvshinov(Lomonosov Moscow State University, SAI, Physics Department),
D. Buckley(South African Astronomical Observatory),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
R. Podesta, C.Lopez, F. Podesta, C.Francile(Observatorio Astronomico Felix Aguilar OAFA),
H.Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),
R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias),
O.A. Gres, N.M. Budnev (Irkutsk State University, API),
A. Gabovich, Yu. Sergienko, V.Yurkov (Blagoveschensk Educational State University)
MASTER Global Robotic Net started Fermi GRB 200803B( Fermi GBM team, GCN 28201)
errorbox 27 sec after notice time (55 sec after trigger time) at
2020-08-03 16:53:38 UT, with upper limit up to 18.6 mag. (GCN 28204)
Observations started at twilight at zenith distance = 10 deg, the sun altitude was -10.9 deg.
The cover map with discovered OT is at alert page
MASTER OT J144603.45-413156.7 discovery (AT2020qvn)
During these alert observations (Fermi inspection, open mode for twin
MASTER, and fast coverage of large error-box by 8 square deg.)
MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at
(RA, Dec) = 14h 46m 03.45s -41d 31m 56.7s on 2020-08-03.70644 UT.
The OT unfiltered magnitude is 17.9m (mlim=18.1).
The OT is seen in 5 images. There is no any known sources in VIZIER and minor planet at this place
We have reference image on 2017-05-28.87608 UT with unfiltered mlim=20.9m.
Spectral observations are required (it also can be MilkyWay's CV, PSN in
52" from 6df galaxy (z=0.05128, B=16.96,R=15.97, too far for PSN but can
The discovery and reference images are available at:
Spectral observations and deep photometry are required.