Average 2-6 keV pulse shapes of Hercules X-1 during the January 1972 ''on'' state

Conference · Wed Oct 15 04:00:00 EDT 1975 · Ann. N.Y. Acad. Sci.; (United States)

OSTI ID:7192935

Joss, P C; Fechner, W A

By use of Uhuru data, average pulse shapes of Her X-1 have been calculated during segments of the January 1972 on state. The average pulse shape was found to vary little during most of the on state. However, during approximately the last 3 days of the on state, the pulsations largely disappear. These observations lend support to a class of models wherein the 35-day cycle of Her X-1 is due to variable obscuration by a precessing accretion disk. 8 references. (auth)

• Research Organization: Massachusetts Inst. of Tech., Cambridge
• OSTI ID: 7192935
• Conference Information: Journal Name: Ann. N.Y. Acad. Sci.; (United States) Journal Volume: 262
• 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
CONFIGURATION
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ENERGY RANGE
KEV RANGE
KEV RANGE 01-10
MATHEMATICAL MODELS
PULSATIONS
PULSES
SATELLITES
SHAPE
STAR MODELS
VARIATIONS