Radial and nonradial pulsations of polytropes - High precision eigenvalues and the approach of p-modes to asymptotic behavior

Details Radial and nonradial pulsations of polytropes - High precision eigenvalues and the approach of p-modes to asymptotic behavior Radial and nonradial pulsations of polytropes - High precision eigenvalues and the approach of p-modes to asymptotic behavior

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331.1013m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 331, Aug. 15, 1988, p. 1013-1028.

Statistics

Computation

13

Asymptotic Properties, Eigenvalues, Polytropic Processes, Pulsed Radiation, Solar Oscillations, Stellar Oscillations, Computational Astrophysics, Frequency Measurement, Gravitational Effects, Helioseismology, Surface Properties

Scientific paper

In order to extract eigenfrequencies of high-order p-modes with precisions of one part in 500,000, a careful numerical treatment is necessary for both the input stellar model and the oscillation code. Here, polytropes are used to avoid uncertainties associated with the input model. Eigenfrequencies were obtained in a number of polytropes for l-values of 0-3 and radial orders up to about 40. It was that, in order to have the frequencies converge with the necessary precision, the input model must contain several thousand shells, and the oscillation code must contain at least several dozen grid points in each loop of the eigenfunction. The outermost loop requires many more points: the converged models contain several hundred grid points between the last node and the surface. An important check on the results is provided by a comparison of the asymptotic behavior of adjacent mode separations with the limiting behavior predicted by Tassoul (1980). The present oscillation code is based on the Cowling (1941) approximation (as assumed by Tassoul).

Affiliated with

Also associated with

No associations

Rating

Radial and nonradial pulsations of polytropes - High precision eigenvalues and the approach of p-modes to asymptotic behavior does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Radial and nonradial pulsations of polytropes - High precision eigenvalues and the approach of p-modes to asymptotic behavior, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial and nonradial pulsations of polytropes - High precision eigenvalues and the approach of p-modes to asymptotic behavior will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1693692