Friday, May 5, 2017
2:00 pm

TAPIR Seminar

The Importance of being Eccentric
Ann-Marie Madigan, Assistant Professor of Astrophysics, University of Colorado, Boulder

Disks of eccentric orbits undergo rich gravitational dynamics not available to their circular counterparts. I will discuss implications ranging from the Solar System to stars orbiting supermassive black holes. In particular, I will show how eccentric orbit dynamics may naturally reproduce the signatures in the outer Solar System which have been attributed to a hypothetical "planet 9". I will also show how eccentric orbit dynamics stabilize the lopsided nuclei sometimes found in massive galaxies; the dynamics may also dramatically enhance the rate of tidal disruption events, possibly explaining their observed preference for recent- and post-merger galaxies.

Contact Sheri Stoll at 626-395-6608
For more information see TAPIR at Caltech
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