Abstract Submission CLOSED

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Dr. Erica SimosonĀ 

"Gravitational radiation as the driver in ultracompact binaries"

Joe Patterson, Columbia University

The "ultracompacts" are very close binaries in which a white dwarf transfers matter to an accretion disk around a white dwarf, neutron star, or black hole. Mass transfer is thought to be powered by the loss of angular momentum by gravitational radiation... and, perhaps paradoxically, this should lead to a period increase as the binary widens. Yet no such period increase has ever been seen - until now. This paper reports such a period increase in the WD-WD binary ES Ceti, on a timescale of 6 Myr.

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