Uhuru observations of Hercules X-1 during the low state of the 35-day cycle

Journal Article · Mon Nov 01 04:00:00 EST 1976 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182283· OSTI ID:7245391

Jones, C; Forman, W

We have observed X-ray emission from Her X-1 during the 23 day low state of the 35 day cycle. During this time, we observe all the activity normally present during the high state: regular eclipses, absorption ''dips,'' and 1.24 s pulsations. We compare our observations with the models of Her X-1 derived by Roberts, Gerend and Boynton, Katz, and Petterson. We also suggested that a hot, optically thin corona along both faces of the accretion disk can produce the unpulsed component of emission observed during both the high- and low-intensity states. (AIP)

• Research Organization: Center for Astrophysics, Harvard College Observatory and Smithsonian Astrophysical Observatory
• OSTI ID: 7245391
• Journal Information: Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 209:3; ISSN AJLEA
• 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
ATMOSPHERES
BINARY STARS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ECLIPSE
MATHEMATICAL MODELS
PULSATIONS
SPECTRA
STAR MODELS
STARS
STELLAR ATMOSPHERES
VARIATIONS
X-RAY SPECTRA