On the effect of convection on solar p modes

Details On the effect of convection on solar p modes On the effect of convection on solar p modes

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...418..305s&link_type=abstract

Astronomy and Astrophysics, v.418, p.305-312 (2004)

Astronomy and Astrophysics

Astrophysics

4

Convection, Sun: Oscillations, Methods: Analysical

Scientific paper

We investigate the modulation of acoustic wave modes by convection. We consider a cavity that encloses a layer of convection rolls. The stratification due to gravity is taken into account. For the acoustic oscillation we use a harmonic expansion for the horizontal dependence, while a finite-difference scheme is employed in the vertical direction. We calculate the eigenfrequencies of the acoustic modes under adiabatic conditions, as functions of the velocity amplitude of the convection. The results confirm the frequency decreases found in earlier non-stratified models with only a vertical component of the convective velocity.

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