V404 CYG/GS 2023+338: Monitoring in the Optical with Robotic Telescopes of the MASTER Global Network during the 2015 Superburst


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Resumo

2070 unique, homogeneous photometric and polarization observations of the microquasar in a binary system with a black hole V404 Cyg/GS2023+338 obtained in 2015 with the MASTER global network of robotic telescopes (16 robotic telescopes located at eight points on the Earth in Russia, Spain, South Africa, and Argentina) are presented. MASTER was the first telescope network to obtain optical observations of the microquasar after its gamma-ray outburst in 2015. Observations were carried out from 18:34:09 UT on June 15, 2015 until December 2015 in four polarizations and in the four standard BV RI filters. The paper presents the results of these observations and a comparative analysis of optical and X-ray data. The observations confirm the previously discovered super-long delays of the optical radiation relative to the X-ray outbursts. Possible mechanisms causing the delay in the optical variations relative to the X-ray variations are discussed. Variability of the optical polarization discovered earlier is confirmed another similar episode reported.

Sobre autores

V. Lipunov

Sternberg Astronomical Institute; Physics Department

Autor responsável pela correspondência
Email: lipunov2007@gmail.com
Rússia, Moscow, 119991; Moscow, 119234

A. Kuznetsov

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

E. Gorbovskoy

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

V. Kornilov

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

N. Tyurina

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

V. Vladimirov

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

V. Krushinskiy

Kourovka Astronomical Observatory

Email: lipunov2007@gmail.com
Rússia, Ekaterinburg, 620000

I. Zalozhnykh

Kourovka Astronomical Observatory

Email: lipunov2007@gmail.com
Rússia, Ekaterinburg, 620000

D. Vlasenko

Sternberg Astronomical Institute; Physics Department

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991; Moscow, 119234

D. Zimnukhov

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

P. Balanutsa

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

A. Gabovich

Sternberg Astronomical Institute; Blagoveshchensk State Pedagogical University

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991; Blagoveshchensk, 675000

N. Shakura

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

F. Giovanelli

Institute Nationale di Astrofisica

Email: lipunov2007@gmail.com
Itália, Roma

L. Titarchuk

Sternberg Astronomical Institute; Ferrara University

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991; Ferrara

D. Buckley

South African Astronomical Observatory (SAAO)

Email: lipunov2007@gmail.com
República da África do Sul, Cape Town

O. Gress

Sternberg Astronomical Institute; Irkutsk State University, Applied Physics Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991; Irkutsk, 664003

N. Budnev

Irkutsk State University, Applied Physics Institute

Email: lipunov2007@gmail.com
Rússia, Irkutsk, 664003

R. Rebolo

Instituto de Astrofísica de Canarias

Email: lipunov2007@gmail.com
Espanha, La Laguna, Tenerife

M. Serra-Ricart

Irkutsk State University, Applied Physics Institute

Email: lipunov2007@gmail.com
Rússia, Irkutsk, 664003

A. Tlatov

Kislovodsk Solar Station of the Main (Pulkovo) Observatory

Email: lipunov2007@gmail.com
Rússia, Kislovodsk, 357700

V. Senik

Sternberg Astronomical Institute

Email: lipunov2007@gmail.com
Rússia, Moscow, 119991

V. Yurkov

Kislovodsk Solar Station of the Main (Pulkovo) Observatory

Email: lipunov2007@gmail.com
Rússia, Kislovodsk, 357700

O. Ershova

South African Astronomical Observatory (SAAO)

Email: lipunov2007@gmail.com
República da África do Sul, Cape Town

V. Grinshpun

Physics Department

Email: lipunov2007@gmail.com
Rússia, Moscow, 119234

Yu. Ishmukhametova

Irkutsk State University, Applied Physics Institute

Email: lipunov2007@gmail.com
Rússia, Irkutsk, 664003

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