Imaging of Acoustic Wave Sources inside the Sun
Abstract
A holographic imaging technique, previously used in underwater acoustics, is applied to the solar inverse source problem. This problem consists of forming 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 the image of a single point source is spatiotemporally extended and will produce 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. It 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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 2001
- DOI:
- 10.1086/321360
- Bibcode:
- 2001ApJ...554..488S
- Keywords:
-
- Sun: Atmosphere;
- Sun: Interior;
- Sun: Oscillations;
- Techniques: Interferometric;
- Waves