OSO-8 x-ray observations of AM Hersoulis

Technical Report · Sun May 01 04:00:00 EDT 1977

OSTI ID:5177549

Swank, J; Lampton, M; Boldt, E; Holt, S; Serlemitsos, P

Hard X-ray observations of the binary system AM Her were coincident with soft X-ray and ground-based optical measurements. In the 2--60 keV band, variability was detected with an eclipse during phases 0.5 to 0.7 with respect to the 0. d 12892 period optical minima, synchronous with the known soft X-ray eclipse. The 2--60 keV uneclipsed flux was 9.5 x 10 /sup -/10 erg sq cm/sec, of which 86% lies above 10 keV. Thus AM Her contains a hard source located near the similarly eclipsed soft X-ray source. The X-ray data are interpreted in terms of thermal bremsstrahlung from accretion onto a white dwarf.

• Research Organization: National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center
• OSTI ID: 5177549
• Report Number(s): N-77-27050; NASA-TM-X-71313; X-661-77-104
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
BREMSSTRAHLUNG
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DWARF STARS
ELECTROMAGNETIC RADIATION
HARD X RADIATION
IONIZING RADIATIONS
RADIATIONS
SOFT X RADIATION
SPECTRA
STAR ACCRETION
STAR EVOLUTION
STARS
STRUCTURAL MODELS
WHITE DWARF STARS
X RADIATION
X-RAY SPECTRA