EDP Sciences
Free access
Issue
A&A
Volume 376, Number 2, September II 2001
Page(s) 708 - 712
Section Physical and chemical processes
DOI http://dx.doi.org/10.1051/0004-6361:20011030


A&A 376, 708-712 (2001)
DOI: 10.1051/0004-6361:20011030

The effect of time-dependent random mass density field on frequencies of solar sound waves

K. Murawski1, L. Nocera2 and M. Medrek1

1  Department of Environmental Physics, Technical University of Lublin, ul. Nadbystrzycka 40, 20-618 Lublin, Poland
2  Institute of Atomic and Molecular Physics, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy

(Received 26 March 2001 / Accepted 26 June 2001)

Abstract
The effect of a time-dependent random mass density field on the frequencies and amplitudes of solar p-modes approximated as sound waves is considered by analytical perturbative means and numerical simulations for one-dimensional hydrodynamic equations. The analytical results, which are worked out for a Gaussian spectrum of the random mass fluctuations, show frequency increase and amplitude amplification, in agreement with numerical simulations.


Key words: convection -- Sun: oscillations -- turbulence

Offprint request: K. Murawski, kamur@akropolis.pol.lublin.pl

SIMBAD Objects in preparation



© ESO 2001

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.