A4 Refereed article in a conference publication
Correlated X-ray and Optical Variability in Intermediate Polars During their Outbursts
Authors: Neustroev VV, Tsygankov S, Suleimanov V, Sjoberg G
Editors: Tremblay PE, Gansicke B, Marsh T
Conference name: European Workshop on White Dwarfs
Publication year: 2017
Book title : 20th European Workshop on White Dwarfs (EuroWD)
Journal name in source: 20TH EUROPEAN WHITE DWARF WORKSHOP
Journal acronym: ASTR SOC P
Series title: Astronomical Society of the Pacific Conference Series
Volume: 509
First page : 501
Last page: 508
Number of pages: 8
ISBN: 978-1-58381-902-9
ISSN: 1050-3390
Abstract
We present a study of the evolution of the optical and X-ray fluxes during outbursts of two short-period cataclysmic variables, the confirmed intermediate polar CC Scl and the intermediate polar candidate FS Aur. We found that the X-ray and optical light curves are well correlated in both objects, although the amplitudes of outbursts in X-rays are smaller than those in the optical. The ratio of the outburst amplitudes in X-rays and the optical in both objects is close to similar to 0.6. This is significantly higher than was observed during the outburst of the non-magnetic dwarf nova U Gem, in which this ratio was only similar to 0.03. The obtained data also suggest that the dependence between the X-ray and optical fluxes must steepen significantly toward very low accretion rates and very low fluxes. Similarities in the behaviour of CC Scl and FS Aur indicate strongly the magnetic nature of the white dwarf in FS Aur.
We present a study of the evolution of the optical and X-ray fluxes during outbursts of two short-period cataclysmic variables, the confirmed intermediate polar CC Scl and the intermediate polar candidate FS Aur. We found that the X-ray and optical light curves are well correlated in both objects, although the amplitudes of outbursts in X-rays are smaller than those in the optical. The ratio of the outburst amplitudes in X-rays and the optical in both objects is close to similar to 0.6. This is significantly higher than was observed during the outburst of the non-magnetic dwarf nova U Gem, in which this ratio was only similar to 0.03. The obtained data also suggest that the dependence between the X-ray and optical fluxes must steepen significantly toward very low accretion rates and very low fluxes. Similarities in the behaviour of CC Scl and FS Aur indicate strongly the magnetic nature of the white dwarf in FS Aur.
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