Excitation of transverse magnetic tube waves in stellar convection zones. II. Wave energy spectra and fluxes

Details Excitation of transverse magnetic tube waves in stellar convection zones. II. Wave energy spectra and fluxes Excitation of transverse magnetic tube waves in stellar convection zones. II. Wave energy spectra and fluxes

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...386..606m&link_type=abstract

Astronomy and Astrophysics, v.386, p.606-614 (2002)

Astronomy and Astrophysics

Astrophysics

17

Methods: Analytical, Stars: Chromospheres, Stars: Coronae, Stars: Magnetic Fields, Mhd, Waves

Scientific paper

The wave energy spectra and fluxes for transverse magnetic tube waves generated in stellar convection zones are computed by using the analytical method developed in the previous paper of this series. The main physical process responsible for the generation of these waves is shaking of a thin and vertically oriented magnetic flux tube by the external turbulent convection. The approach includes the correlation effects, which occur when the tube is shaken over a significant fraction of its length, but is limited to linear waves. The calculations are performed for population I stars with effective temperatures ranging from Teff = 2000 K to 10 000 K, and with gravities log g = 3-5. It is shown that the fluxes carried by linear transverse waves along a single flux tube are approximately one order of magnitude higher than those carried by linear longitudinal tube waves. The obtained results can be used to construct theoretical models of stellar chromospheres and winds.

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