Pointed soft X-ray observations of AM Herculis from HEAO 1

Details Pointed soft X-ray observations of AM Herculis from HEAO 1 Pointed soft X-ray observations of AM Herculis from HEAO 1

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245..183t&link_type=abstract

Astrophysical Journal, Part 1, vol. 245, Apr. 1, 1981, p. 183-194. Research supported by the Miller Institute for Basic Researc

Astronomy and Astrophysics

Astrophysics

40

Binary Stars, Light Curve, Magnetic Stars, White Dwarf Stars, X Ray Sources, Fourier Analysis, Heao 1, Stellar Mass Accretion, Stellar Spectra, Stellar Spectrophotometry, X Ray Spectra

Scientific paper

Extensive soft X-ray (0.1-1.5 keV) observations of AM Herculis are reported. The data, acquired during two pointed observations by HEAO 1 in 1978, span four binary cycles and reveal considerable detail in the 3.09 hour light curve. Rapid X-ray flickering is evident throughout the bright section of the light curve and is characterized by an average e-folding autocorrelation time of about 10 s. Analysis of the spectral data indicates a 30% variability; on occasion the X-ray spectrum becomes softer as the source intensity decreases. The current understanding of AM Her as an accreting magnetic white dwarf is discussed, and various models are related to the present HEAO-1 data.

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