RX J1914.4+2456 - The first double-degenerate polar?

Details RX J1914.4+2456 - The first double-degenerate polar? RX J1914.4+2456 - The first double-degenerate polar?

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.293l..57c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 293, p. L57-L60

Astronomy and Astrophysics

Astronomy

77

Accretion Disks, Novae, Cataclysmic Variables, X Ray Stars, Light Curve, White Dwarf Stars

Scientific paper

RX J1914.4+2456 exhibits a light curve with a strong modulation at 569 s: this period is characteristic of the white dwarf spin period in intermediate polar (IP) systems. However, the X-ray light curve is difficult to reconcile with current models for IP emission. We argue that a simpler explanation is that the system is a polar with a degenerate secondary star, which would make it the first known system of its kind. As such it should contain the first example of an He-dominated radial accretion flow on to the white dwarf surface, and RX J1914.4+2456 would have the shortest known orbital period of any binary system.

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