Imaging of acoustic wave sources inside the sun

Authors
Citation
R. Skartlien, Imaging of acoustic wave sources inside the sun, ASTROPHYS J, 554(1), 2001, pp. 488-495
Citations number
19
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
554
Issue
1
Year of publication
2001
Part
1
Pages
488 - 495
Database
ISI
SICI code
0004-637X(20010610)554:1<488:IOAWSI>2.0.ZU;2-V
Abstract
A holographic imaging technique, previously used in underwater acoustics, i s applied to the solar inverse source problem. This problem consists of for ming acoustic images so as to localize impulsive sources in space and time in the solar interior. The difficulty with such an imaging method is that t he image of a single point source is spatiotemporally extended and will pro duce significant overlap between images of separated sources if the source density is large. I propose a modification of the existing method in order to make reliable source images also in the case for large source density. I t is suggested that the method can be used on solar observations to detect relatively strong and impulsive wave sources inside the sun and to perhaps clarify unanswered problems regarding excitation of p modes.