May 01, 2017

Peter Goldreich, Caltech

"Physics of the Stochastic Excitation of Stellar Modes"

Internal properties of stars with convective envelopes are determined by
analyzing the frequencies of their acoustic modes. After a brief
introduction to observational techniques, I will describe the emission,
absorption, and scattering of sound inside a star and how the waves
ultimately escape through its photosphere.  Then I will demonstrate how
these processes account for some remarkable regularities revealed by
observations of solar modes across 3 orders of magnitude in angular degree.

Event Details

May 01, 2017


4421 Sterling Hall

Bautz Lecture Noon

Speaker Host:
UW Astronomy Department

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