LARPs -- Low-accretion rate polars

Details LARPs -- Low-accretion rate polars LARPs -- Low-accretion rate polars

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aspc..261..102s&link_type=abstract

The Physics of Cataclysmic Variables and Related Objects, ASP Conference Proceedings, Vol. 261. Edited by B. T. Gänsicke, K. Beu

Physics

23

Scientific paper

We highlight and review polars at extremely low accretion rates of only 10-13 Modot yr-1. These systems are important for a number of reasons: (1) They allow to study the properties of a cyclotron emitting accretion plasma in a very `clean' environment. (2) They yield a direct and uncontaminated view on the stellar photo-spheres of the binary. In this paper we draw particular attention on the quest for magnetic activity of the fastly rotating mass-donor stars and include in our discussion results obtained for eclipsing polars. (3) The census of known polars is heavily biased towards X-ray bright, hence high-accretion rate systems. The space density of polars in particular and CVs in general therefore is highly uncertain. The relevance of LARPs to solve the issue is addressed.

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