This Week at Physics

 
<< January 2017 >>
 
 >>
 >>
 >>
 >>
 >>
Sun Mon Tue Wed Thu Fri Sat
 1   2   3   4   5   6   7 
 8   9   10   11   12   13   14 
 15   16   17   18   19   20   21 
 22   23   24   25   26   27   28 
 29   30   31   
 
Add an Event Edit This Event

This Week at Physics

<< Fall 2016 Spring 2017 Fall 2017 >>
Subscribe your calendar or receive email announcements of events

Event Number 4388

  Tuesday, January 17th, 2017

Theory Seminar (High Energy/Cosmology)
The Fate of Axion Stars
Time: 3:30 pm
Place: 5280 Chamberlin
Speaker: Hong Zhang, Ohio State
Abstract: If the dark matter consists of axions, some of it will condense into axion stars, which are gravitationally bound Bose-Einstein condensates of axions. If an axion star accretes enough axions to exceed a critical mass, it will collapse. The fate of a collapsing axion star has not been established. One possibility for the remnant is a much denser axion star in which the attractive forces of gravity and axion pair interactions are balanced by the mean-field pressure of the axion Bose-Einstein condensate. A nonrelativistic effective field theory for axions can provide insights into the fate of axion stars. The collapsing process of axion stars and the possible denser remnant produce unique monochromatic radio-frequency signals at odd-integer harmonics of the fundamental frequency set by the axion mass.
Host: Josh Berger
Presentation: Axion_Hong_Zhang.pdf
Add this event to your calendar
©2013 Board of Regents of the University of Wisconsin System