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The apsidal motion of the eccentric eclipsing binary DI Herculis - An apparent discrepancy with general relativityThe apsidal motion of the eccentric eclipsing binary DI Herculis (HD 175227) is determined from an analysis of the available observations and eclipse timings from 1959 to 1984. Least squares solutions to the primary and secondary minima extending over an 84-yr interval yielded a small advance of periastron omega dot of 0.65 deg/100 yr + or - 0.18/100 yr. The observed advance of the periastron is about one seventh of the theoretical value of 4.27 deg/100 yr that is expected from the combined relativistic and classical effects. The discrepancy is about -3.62 deg/100 yr, or a magnitude of about 20 sigma. Classical mechanisms which explain the discrepancy are discussed, together with the possibility that there may be problems with general relativity itself.
Document ID
19850060943
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Guinan, E. F.
(Villanova Univ. PA, United States)
Maloney, F. P.
(Villanova University PA, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: Astronomical Journal
Volume: 90
ISSN: 0004-6256
Subject Category
Astrophysics
Accession Number
85A43094
Funding Number(s)
CONTRACT_GRANT: NAG5-382
Distribution Limits
Public
Copyright
Other

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