Frequency Shifts of the Solar Fundamental Mode
Abstract
The observed frequency shifts of the highdegree solar fundamental mode are explained using a simple geometrical optics approximation. The predicted fractional frequency shift is proportional to the mean squared velocity of the convection flow at the surface of the Sun and inversely proportional to the group velocity of the mode squared. The data converge to the predicted behavior at very high degrees. The inferred root mean squared convection velocity is 1.3 km/s.
 Publication:

arXiv eprints
 Pub Date:
 July 1998
 DOI:
 10.48550/arXiv.astroph/9807178
 arXiv:
 arXiv:astroph/9807178
 Bibcode:
 1998astro.ph..7178G
 Keywords:

 Astrophysics
 EPrint:
 4 pages, submitted to ApJ