Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (51) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (6)
· Reads History
·
· Translate This Page
Title:
Synchronous rotation in magnetic X-ray binaries
Authors:
Joss, P. C.; Katz, J. I.; Rappaport, S.
Affiliation:
AA(MIT, Cambridge, Mass.), AB(MIT, Cambridge, Mass.), AC(California, University, Los Angeles, Calif.)
Publication:
Astrophysical Journal, Part 1, vol. 230, May 15, 1979, p. 176-183. (ApJ Homepage)
Publication Date:
05/1979
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Binary Stars, Magnetic Stars, Stellar Rotation, Stellar Systems, X Ray Astronomy, X Ray Binaries, X Ray Stars, Dwarf Stars, Magnetostatics, Ohmic Dissipation, Stellar Models, Synchronism
DOI:
10.1086/157074
Bibliographic Code:
1979ApJ...230..176J

Abstract

AM Herculis is thought to be a binary stellar system that contains an accreting magnetic degenerate dwarf whose rotation is synchronous with the orbital period. This synchronism is remarkable, particularly because of the small moment of inertia of a degenerate dwarf and the large specific angular momentum of the accreted matter. This paper demonstrates that ohmic dissipation from the magnetic interaction of the stars is capable of bringing about exact synchronism, provided that some other process has brought the rotation period of the degenerate dwarf to the same order of magnitude as the orbital period. It is also shown that magnetostatic interaction in the synchronous state leads to oscillatory drifts in phase about exact synchronism with periods of approximately 1-10 yr. These phase drifts could manifest themselves in long-term periodic variability in the X-ray or optical properties of the source. Accretion torques could excite such oscillatory motions but need not disrupt synchronism once it has been established.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints