{"id":3289,"date":"2016-07-11T17:46:55","date_gmt":"2016-07-11T22:46:55","guid":{"rendered":"https:\/\/uwm.edu\/physics\/?post_type=tribe_events&p=3289"},"modified":"2016-07-21T07:46:08","modified_gmt":"2016-07-21T12:46:08","slug":"cgca-seminar-dr-kartik-prabhu","status":"publish","type":"tribe_events","link":"https:\/\/uwm.edu\/physics\/event\/cgca-seminar-dr-kartik-prabhu\/","title":{"rendered":"CGCA Seminar: Dr. Kartik Prabhu"},"content":{"rendered":"

The Leonard E Parker Center for Gravitation, Cosmology and Astrophysics holds frequent seminars on a broad range of ongoing cosmology and gravitation research topics. Unless otherwise noted, seminars are on Friday afternoons at 1:00 PM in KIRC 2175; there is a gathering for a brown bag lunch at 12:30.<\/p>\n

A Variational Principle for the Axisymmetric Stability of Rotating Relativistic Stars<\/strong>
\nDr. Kartik Prabhu, <\/strong> University of Chicago<\/p>\n

In this talk, I will discuss a recently obtained variational principle for testing the stability of perfect fluid stars to axisymmetric perturbations, which generalizes to axisymmetric perturbations of rotating stars a variational principle given by Chandrasekhar for spherical perturbations of static, spherical stars. The variational principle gives a lower bound to the rate of exponential growth in the case of instability. The derivation closely parallels the derivation of a recently obtained variational principle for analyzing the axisymmetric stability of black holes.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Leonard E Parker Center for Gravitation, Cosmology and Astrophysics holds frequent seminars on a broad range of ongoing cosmology and gravitation research topics. 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