info:eu-repo/semantics/article
MASTER Optical Polarization Variability Detection in the Microquasar V404 Cyg/GS 2023+33
Fecha
2016-12-09Registro en:
Lipunov, Vladimir M.; Gorbovskoy, E.; Kornilov, V.; Krushinskiy, V.; Vlasenko, D.; et al.; MASTER Optical Polarization Variability Detection in the Microquasar V404 Cyg/GS 2023+33; IOP Publishing; Astrophysical Journal; 833; 2; 9-12-2016; 198-211
0004-637X
CONICET Digital
CONICET
Autor
Lipunov, Vladimir M.
Gorbovskoy, E.
Kornilov, V.
Krushinskiy, V.
Vlasenko, D.
Tiurina, N.
Balanutsa, P.
Kuznetsov, A.
Budnev, N.
Gress, O.
Tlatov, A.
Rebolo Lopez, R.
Serra Ricart, M.
Buckley, D.A.H.
Israelyan, G.
Lodieu, N.
Ivanov, K.
Yazev, S.
Sergienko, Yu.
Gabovich, A.
Yurkov, V.
Levato, Orlando Hugo
Saffe, Carlos
Podesta, Ricardo Alberto
Mallamaci, Claudio Carlos
Lopez, C.
Resumen
On 2015 June 15, the Swift space observatory discovered that the Galactic black hole candidate V404 Cyg was undergoing another active X-ray phase, after 25 years of inactivity. The 12 telescopes of the MASTER Global Robotic Net located at six sites across four continents were the first ground-based observatories to start optical monitoring of the microquasar after its gamma-ray wake up at 18h 34m 09s U.T. on 2015 June 15. In this paper, we report, for the first time, the discovery of variable optical linear polarization, changing by 4%-6% over a timescale of ∼1 hr, on two different epochs. We can conclude that the additional variable polarization arises from the relativistic jet generated by the black hole in V404 Cyg. The polarization variability correlates with optical brightness changes, increasing when the flux decreases.