Accounting for the Solar Acoustic and Luminosity Variations from the Deep Convection Zone

Details Accounting for the Solar Acoustic and Luminosity Variations from the Deep Convection Zone Accounting for the Solar Acoustic and Luminosity Variations from the Deep Convection Zone

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...463l.117k&link_type=abstract

Astrophysical Journal Letters v.463, p.L117

Astronomy and Astrophysics

Astronomy

16

Sun: Activity, Sun: Oscillations, Sun: Magnetic Fields

Scientific paper

Recent helioseismic observations (Duvall et al.) have demonstrated how new data analysis techniques can determine local changes in the acoustic properties beneath the photosphere. The recent results provide compelling evidence of a latitudinal sound speed variation. Using results from numerical simulations, we show here how this acoustic variation has the correct form and amplitude needed to account for the previously observed solar photometric changes. In this picture, both the acoustic and irradiance changes may be caused by magnetically induced entropy fluctuations near the base of the solar convection zone.

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