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Cosmic strings and the microwave sky. I - Anisotropy from moving stringsA method is developed for calculating the component of the microwave anisotropy around cosmic string loops due to their rapidly changing gravitational fields. The method is only valid for impact parameters from the string much smaller than the horizon size at the time the photon passes the string. The method makes it possible to calculate the temperature pattern around arbitrary string configurations numerically in terms of one-dimensional integrals. This method is applied to temperature jump across a string, confirming and extending previous work. It is also applied to cusps and kinks on strings, and to determining the temperature pattern far from a strong loop. The temperature pattern around a few loop configurations is explicitly calculated. Comparisons with the work of Brandenberger et al. (1986) indicates that they have overestimated the MBR anisotropy from gravitational radiation emitted from loops.
Document ID
19880043904
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Stebbins, Albert
(NASAFermilab Astrophysics Center Batavia, IL, United States)
Date Acquired
August 13, 2013
Publication Date
April 15, 1988
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 327
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
88A31131
Distribution Limits
Public
Copyright
Other

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