Effects of convective velocities on solar pressure mode frequencies

Details Effects of convective velocities on solar pressure mode frequencies Effects of convective velocities on solar pressure mode frequencies

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286..671d&link_type=abstract

In ESA, Seismology of the Sun and Sun-Like Stars p 671-672 (SEE N89-25819 19-92)

Computer Science

Sound

2

Acoustic Measurement, Helioseismology, P Waves, Solar Atmosphere, Solar Oscillations, Numerical Analysis, Solar Physics, Sound Waves, Stellar Models

Scientific paper

Discrepancies between observations and theoretical calculations of solar p-mode frequencies, v obs, v calc are discussed, and it is proposed to approximate the difference (observation-calculation) versus frequency as: delta v = v obs - v calc = -K vsq, where the constant K is of the order of 1 sec and independent of degree l. Brown's (1984) suggestion that solar p-mode eigenfrequencies are decreased by turbulent convection is considered, to see if this physical effect is responsible for some of the difference V 0 - V calc. An order of magnitude evaluation which shows that it is worthwhile to pursue the idea further, by improving the description of the coupling between convection and oscillations, is presented.

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