The physics of stellar angular momentum transport

Matteo Cantiello (KITP) - October 20, 2014 at 12:10 pm

Stars are born rotating. Understanding how the angular velocity profile changes during their evolution is key to unravel the details of explosive stellar deaths (Supernovae and Gamma Ray Bursts) and the properties of stellar remnants (White Dwarfs, Neutron Stars and Black Holes). In the last couple of years new exciting results have been obtained by the KEPLER satellite, which through asteroseismology has provided a measure of the degree of radial differential rotation in many evolved low-mass stars. I will discuss the physics of different classes of angular momentum transport mechanism in stars, including rotational instabilities and circulations, magnetic torques and internal gravity waves. I will show how the asteroseismic observations can be used to test these different mechanisms in stellar evolution calculations.

The seminar will be held in 131A Campbell Hall.

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