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SUMMARY:Dissipation via dynamical tides in stellar binaries and the curiou
 s case of PSR J0045-7319 - Yubo Su (Cornell)
DTSTART:20220214T140000Z
DTEND:20220214T150000Z
UID:TALK169646@talks.cam.ac.uk
CONTACT:Zhao Guo
DESCRIPTION:In binaries composed of either white dwarfs or early-type star
 s\, the dominant tidal process involves the dissipation of internal gravit
 y waves via nonlinear wave breaking. The details of this wave breaking pro
 cess affect the spin evolution of the star and may also give rise to detec
 table transients. I will describe the result of resolved\, 2D hydrodynamic
 al simulations of gravity wave breaking in a uniformly stratified\, isothe
 rmal atmosphere. I then use these results to derive a closed form expressi
 on for the orbital decay rate of highly eccentric\, compact main sequence 
 (MS)-compact object binaries. As a case study\, I apply these expressions 
 to the MS-pulsar binary J0045-7319\, which has a measured orbital decay ra
 te\, and obtain constraints on the structure of the MS star.
LOCATION:Online
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