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The Characteristics of Magnetic CVs in the Period Gap

Published online by Cambridge University Press:  12 April 2016

Gaghik Tovmassian ,
Sergey Zharikov ,
Ronald Mennickent  and
Jochen Greiner
Gaghik Tovmassian
Affiliation:
Observatorio Astronómico Nacional, Instituto de Astronomía, UNAM, P.O. Box 439027, San Diego, CA, USA92143-9027
Sergey Zharikov
Affiliation:
Observatorio Astronómico Nacional, Instituto de Astronomía, UNAM, P.O. Box 439027, San Diego, CA, USA92143-9027
Ronald Mennickent
Affiliation:
Dpto. de Fisica, Fac. de Cs. Fisicas y Mat, Universidad de Concepcion, Casilla 160-C, Concepcion, Chile
Jochen Greiner
Affiliation:
Max-Planck-Institute for Extraterrestrial Physics (MPE), 85711 Garching, Germany

Abstract

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We have observed several magnetic cataclysmic variables located in the range between 2 and 3 hours, known as the period gap. This work was prompted by the recent discovery of RXJ1554.2+2721. It has 2.54 hours orbital period and shows almost pure cyclotron continuum in a low luminosity state, similar to HS1023+3900, HS0922+1333 and RBS206. These are low accretion rate polars (LARPs) known to have mass transfer rates of order of a few 10-13M⊙/year. The aim of the study was to find out, if magnetic systems filling the period gap are in any way different from their counterparts outside that range of periods. The only significant difference we encounter is a much higher number of asynchronous magnetic systems towards longer periods than below the gap.

Type
Part 1. Population and Evolution
Information
International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 15 - 21
Copyright
Copyright © Astronomical Society of the Pacific 2004

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