EUVE Observations of the Magnetic Cataclysmic Variable QQ Vulpeculae

Abstract

We present simultaneous X-ray (lambda_peak ~ 44A) and EUV (lambda_peak = 89A) light curves for the magnetic cataclysmic variable QQ Vulpeculae, obtained with the EUVE satellite. We find that the unique shape of the X-ray light curve is different from previously obtained X-ray light curves of QQ Vul and provides evidence for two-pole accretion. Detailed examination of the photometric data indicates that QQ Vul undergoes a stellar eclipse of the X-ray emitting region, indicative of a high binary inclination. We discuss possible implications for the nature of this system given the observed shape of its EUV and X-ray light curves.

12 pages including 4 figures, accepted to PASP

References in corpus (1)

• The Three Dimensional Structure of EUV Accretion Regions in AM Herculis Stars: Modeling of EUV Photometric and Spectroscopic Observations

Cited by in corpus (5)

• Sporadic radio pulses from a white dwarf binary at the orbital period
• Roche tomography of cataclysmic variables -- II. Images of the secondary stars in AM Her, QQ Vul, IP Peg and HU Aqr
• An EUV Study of the Intermediate Polar EX Hydrae
• Short Duration Accretion States of Polars as seen in TESS and ZTF data
• Serendipitous discovery of the magnetic cataclysmic variable SRGE J075818-612027