2016ApJ...833..198L

Query : 2016ApJ...833..198L

2016ApJ...833..198L - Astrophys. J., 833, 198-198 (2016/December-3)

MASTER optical polarization variability detection in the microquasar V404 Cyg/GS 2023+33.

LIPUNOV V.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 Y., GABOVICH A., YURKOV V., LEVATO H., SAFFE C., PODESTA R., MALLAMACI C. and LOPEZ C.

Abstract (from CDS):

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.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - stars: black holes - stars: evolution - stars: individual: V404 Cyg - stars: jets - stars: jets

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 100906A gB 01 54 44.19 +55 37 49.8           ~ 233 0
2 GRB 110422A gB 07 28 11.21 +75 06 24.0           ~ 113 0
3 Fermi bn121011469 gB 17 20 51.27 +41 06 36.8           ~ 55 0
4 V* V404 Cyg HXB 20 24 03.8247037434 +33 52 01.961154861           G9/K0III/V 1370 0

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