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Acoustic modes in the solar envelope

  1. Apr 29, 2008 #1
    Assume that a narrow layer of the sun just below the photosphere is modeled by an isothermal layer of neutral hydrogen and helium at 8000K below which is a fully convective layer with adiabatic sound velocity increasing linearly as a function of depth with a scale length of 100 km

    a.) use the values of the mass, radius and effective temp of sun to find the acceleration due to gravity and adiabatic sound speed, and hence the Brunt - Viasala frequency at the isothermal layer.

    what will be the horizontal wave number for an l = 1000 mode?

    what will be its acoustic cut off frequncy at this layer?
  2. jcsd
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