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Helioseismic imaging of sunspots at their antipodesRecent work by Braun et al. (1988) has shown that sunspots absorb helioseismic waves. It is proposed that sunspot absorption causes a seismic deficit that should be imaged at the antipode of the sunspot. If these images are observable, it should be possible to produce seismic maps of magnetic regions on the far side of the sun. Diagnostic applications would include lifetimes of higher-frequency modes, and possibly rotation of the solar interior and detection of subsurface magnetic structure. Elements of the theory of seismic imaging are outlined. The extention of acoustic holography to solar interior diagnostics in the context of antipodal imaging is proposed.
Document ID
19900049535
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lindsey, Charles
(Hawaii, University Honolulu, United States)
Braun, Douglas C.
(National Solar Observatory Tucson, AZ, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: Solar Physics
Volume: 126
ISSN: 0038-0938
Subject Category
Solar Physics
Accession Number
90A36590
Funding Number(s)
CONTRACT_GRANT: NAGW-723
Distribution Limits
Public
Copyright
Other

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