X-ray observations of AM Herculis in its low state

Details X-ray observations of AM Herculis in its low state X-ray observations of AM Herculis in its low state

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...262..709f&link_type=abstract

Astrophysical Journal, Part 1, vol. 262, Nov. 15, 1982, p. 709-713.

Astronomy and Astrophysics

Astronomy

15

Eclipsing Binary Stars, X Ray Astronomy, Heao 2, Iue, Light Curve, Spectral Energy Distribution, X Ray Spectra

Scientific paper

AM Her was observed with the Einstein Imaging Proportional Counter during the low state of 1980 August. The light curve shows an eclipse at phim = 0.0 similar to the one observed in the customary high state. The spectral distribution of the X-ray photons does not show any soft component. The IPC flux suggests that the intensity of the hard component in the low state is about one-tenth of the intensity of the hard component during the high state, similar to the variation in the optical magnitude. The comparison of the present data with a previous SAS 3 X-ray observation of AM Her in the low state suggests that the soft component is different in similar accretion regimes. The possibility that this component originates from reprocessing of the hard flux becomes then more unlikely.

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