NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
4U 1820-30 as a potential test of the nonsymmetric gravitational theory of MoffatRecent observations of the X-ray burst source 4U 1820-30 have revealed a 685 s modulation of the luminosity. How this system could provide a stringent test of the nonsymmetric gravitational theory (NGT) of Moffat (1979), provided the observed periodicity is due to orbital motion of a binary system, is discussed. The possible orbital period change predicted by general relativity may be detectable in this system.
Document ID
19880023122
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Krisher, Timothy P.
(Washington University Saint Louis, MO; California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
September 1, 1987
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 320
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
88A10349
Funding Number(s)
CONTRACT_GRANT: NSF PHY-83-13545
CONTRACT_GRANT: NSF PHY-85-13953
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available