Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (220) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Solar seismology. II - The stochastic excitation of the solar p-modes by turbulent convection
Authors:
Goldreich, P.; Keeley, D. A.
Affiliation:
AA(California Institute of Technology, Pasadena, Calif.), AB(Lick Observatory, Santa Cruz, Calif.)
Publication:
Astrophysical Journal, Part 1, vol. 212, Feb. 15, 1977, p. 243-251. (ApJ Homepage)
Publication Date:
02/1977
Category:
Solar Physics
Origin:
STI
NASA/STI Keywords:
Atmospheric Turbulence, Convective Flow, Seismology, Solar Atmosphere, Stochastic Processes, Turbulence Effects, Atmospheric Models, Kinetic Energy, Modal Response, Perturbation Theory, Vortices
DOI:
10.1086/155043
Bibliographic Code:
1977ApJ...212..243G

Abstract

We test the hypothesis that the solar p-modes are stabilized by damping due to turbulent viscosity in the convective zone. Starting from the assumption that the modes are stable, we calculate expectation values for the modal energies. We find that the interaction between a p-mode and the turbulent convection is such that the modal energy tends toward equipartition with the kinetic energy of turbulent eddies whose lifetimes are comparable to the modal period. From the calculated values of the modal energies, we compute rms surface velocity amplitudes. Our predicted rms surface velocities range from 0.01 cm/sec for the fundamental radial mode to 0.6 cm/sec for the radial mode whose period is approximately 5 minutes. The predicted surface velocities for the low order p-modes are much smaller than the velocities inferred from recent observations.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints