The ASCA PV phase observation of FO Aquarii

Details The ASCA PV phase observation of FO Aquarii The ASCA PV phase observation of FO Aquarii

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasj...46l..87m&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan, vol. 46, no. 3, p. L87-L91

Astronomy and Astrophysics

Astronomy

30

Absorption Spectra, Cataclysmic Variables, Dwarf Stars, Stellar Luminosity, X Ray Astronomy, Accretion Disks, Spectrum Analysis, X Ray Binaries

Scientific paper

We report on a approximately 1-day Advanced Satellite for Cosmology and Astrophysics (ASCA) observation of the intermediate polar FO Aquarii. We find two distinctive spectral components, one unabsorbed and the other strongly absorbed; the observed 2-10 keV flux severely underestimates the total system luminosity, due to this strong absorption intrinsic to the binary. The absorbed component is dominant in terms of luminosity, and its light curve is simple. The unabsorbed component accounts for approximately 2% of the luminosity, and shows a much more complicated light curve. As the dominant component predominantly shows a sinusoidal modulation at the white dwarf spin period, it provides a strong evidence for a partial accretion disk in the system.

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