X-ray and optical observations of four polars⋆⋆

Author: Worpel H.   Schwope A. D.   Granzer T.   Reinsch K.   Schwarz R.   Traulsen I.  

Publisher: Edp Sciences

E-ISSN: 1432-0746|592|issue|A114-A114

ISSN: 0004-6361

Source: Astronomy & Astrophysics, Vol.592, Iss.issue, 2016-08, pp. : A114-A114

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Abstract

Aims. We investigate the temporal and spectral behaviour of four polar cataclysmic variables from the infrared to X-ray regimes, refine our knowledge of the physical parameters of these systems at different accretion rates, and search for a possible excess of soft X-ray photons.