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Physics Colloquium

Thursday, April 13, 2023
4:00pm to 5:00pm
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Online and In-Person Event
Oscillating Stars in Bloom: Asteroseismology and Wave Transport Phenomena
Richard Townsend, University of Wisconsin-Madison,

Christy Lecture

Robert Christy once remarked that of all the fields of research to which he had contributed, oscillating variable stars was his favorite. In the past decade, the study of these fascinating objects has blossomed due to the advent of high-precision, high-cadence space observatories that can uncover stellar variability down to the parts-per-million level. On the one hand this has fulfilled the long-held dream of probing stars' internal structures with waves --- the discipline of asteroseismology. On the other, it has led to fresh appreciations of the active role waves can play in shaping the structure and evolution of stars, by transporting energy and momentum and driving mixing in their interiors. This lecture will provide a broad introduction to stellar oscillations, grounded in basic physics, that starts from the pioneering work done by Christy and colleagues in the 1960's and extends through to recent, exciting discoveries.

Join via Zoom:

Meeting ID: 858 1199 4621

The colloquium is held in Feynman Lecture Hall, 201 E. Bridge.

In person is open to those with a valid Caltech ID.