WW Horologii : revised period and X-ray light curve.
Tagliaferri, G.; Beuermann, K.; Giommi, P.; Schwope, A. D.; Thomas, H. -C.
Germany, Netherlands
Abstract
An improved orbital period of the eclipsing AM Herculis binary WW Hor is reported, which allows the relative phasing of 1983 EXOSAT X-ray and the 1986-89 optical light curves to be established. It is found that X-rays and optical cyclotron continuum are produced by the same accreting pole on the magnetic white dwarf. In 1984, WW Hor was not detected with EXOSAT, suggesting that it experienced a low state of accretion.