Advances in Astronomy and Space Physics, Volume 2, Issue 1 (2012)

Two-period variability of the intermediate polar FO Aqr

V. V. Breus1, I. L. Andronov1, T. Hegedus2, P. A. Dubovsky3, I. Kudzej3

1Department of High and Applied Mathematics, Odessa National Maritime University, Odessa, Ukraine
2Baja Astronomical Observatory, Baja, Hungary
3Vihorlat Astronomical Observatory, Humenne, Slovakia

Abstract
We present results of CCD photometric study of the intermediate polar FO Aqr based on observations obtained at the Baja Astronomical Observatory, Hungary, and at the Vihorlat Astronomical Observatory, Slovakia. We analysed variability of the spin period of the white dwarf in FO Aqr using our observations and previously published minima timings. The spin period is significantly shorter than before 2000.

Keywords:
stars: novae, cataclysmic variables; stars: individual: FO Aqr