MASTER OT J050152.74+770406.3: bright optical counterpart of GRB 201020B
ATel #14107; V. Lipunov, V. Kornilov, E. Gorbovskoy, N. Tiurina, P. Balanutsa, A. Kuznetsov, K. Zhirkov, F. Balakin, V. Vladimirov, D. Vlasenko, I. Gorbunov, D. Zimnukhov, V. Senik, A. Chasovnikov, A. Pozdnyakov, D. Cheryasov(Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C. Lopez, F. Podesta, C. Francile (Observatorio Astronomico FelixAguilar OAFA), R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O. A. Gres, N. M. Budnev (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V. Yurkov, Yu. Sergienko (Blagoveschensk Educational State University), V. Shumkov, T. Pogrosheva
on 21 Oct 2020; 15:29 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Gamma Ray, Request for Observations, Gamma-Ray Burst, Transient
MASTER OT J050152.74+770406.3 - optical counterpart of Fermi LAT GRB 201020B
AT2020xss
MASTER Global Robotic Net http://observ.pereplet.ru is equipped by identical twin wide field telescope MASTER-II (2*4sq.degrees) and twin very wide field (~2*400sq.deg.) cameras MASTER-VWFC at every
MASTER observatory (Lipunov et al. 2010)
MASTER-Tavrida wide field robotic-telescope (Lipunov et al. GCN #28704) and
very wide field cameras observed in alert mode Fermi GRB201020B(GBM GCN #28703, LAT GCN #28716)
MASTER auto-detection system (Lipunov et al. 2010, Advances in Astronomy, v.2010, 30L)
discovered bright MASTER OT J050152.74+770406.3 (Lipunov et al. GCN #20718) at
(RA, Dec2000) = 05h 01m 52.74s +77d 04m 06.3s
with m_OT=13.7 at 2020-10-20.73413 UT.
We have reference image on 2020-01-02.78682 UT with unfiltered mlim=19.5m.
The OT has afterglow light curve.
It was also observed by Xu et al. GCN #28719 0.7d later.
Spectral observations for host galaxy is requested.
MASTER Global Robotic Net