Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...148l..14h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 148, no. 2, July 1985, p. L14-L16.
Astronomy and Astrophysics
Astrophysics
81
Cataclysmic Variables, Eclipsing Binary Stars, Magnetic Stars, White Dwarf Stars, X Ray Binaries, X Ray Spectra, Exosat Satellite, Light Curve, Stellar Mass Accretion, Stellar Rotation
Scientific paper
The discovery of a new mode of soft X-ray emission of the magnetic cataclysmic variable AM Her is reported. AM Her has been observed in June, August and September 1983 with EXOSAT in both hard (1-30 keV) and soft (40-120 A) X-rays. Hard X-rays were seen to be partially eclipsed and periodic with the white dwarf rotation period. The eclipse phases are consistent with previous X-ray observations. Soft-X-rays were seen in sharply separate high and low intensity levels, also periodic with the white dwarf rotation period. The soft X-ray high levels, however, coincide with the hard X-ray eclipses. In contrast to previous X-ray observations. These light curves are discussed in terms of emission from two magnetic poles of the white dwarf.
Brinkman Albert C.
Gronenschild E.
Heise Jaret
Kieboom K.
King Andrew R.
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