Effect of a radial rotational velocity gradient on p-mode eigenfrequencies
Journal Article
·
· Astrophys. J.; (United States)
The splitting of p-mode eigenfrequencies due to a depth-dependent solar rotation rate is considered. It is shown that to a first approximation this splitting can be treated as resulting from the translation of the wave pattern across the field of view with a velocity equal the actual velocity at a depth called the effective depth. The effective depths for a model solar envelope with lvertical-barH=3 are presented as a function of position on the (K/sub h/, ..omega..) -plane. The combination of ..omega.. near 0.025 s/sup -1/ and K/sub h/ near 0 yields the deepest probe of the solar envelope. For this same combination of K/sub h/ and ..omega.. it is possible to resolve individual groups of eigenmodes in frequency but not in spatial wavenumber. Achievement of this resolution observationally may permit a determination of the lifetime of these particular modes.
- Research Organization:
- Astronomy Department, University of California, Los angeles
- OSTI ID:
- 6271699
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 227:2; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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