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UID:UW-Physics-Event-3018
DTSTART:20130516T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260317T145737Z
LAST-MODIFIED:20130513T004238Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Dark Matter Searches Using Radio Waves and Neutrinos\, Theory 
 Seminar (High Energy/Cosmology)\, Ranjan Laha\, Ohio State University
DESCRIPTION:The particle nature of dark matter is one of the biggest m
 ysteries of present day science.  I will discuss some of the efforts i
 n detecting dark matter through radio waves and neutrinos.  I will fir
 st talk about the recent hint of a 130 GeV gamma-ray line from the Gal
 actic Center in the Fermi-LAT data.  I will show that current radio ob
 servations of the Galactic Center marginally constrain the interpretat
 ion of the claimed gamma lines\, independent of the underlying particl
 e physics model\, for a contracted NFW profile.  Radio data of the Gal
 actic Center with existing telescopes will play an important role in c
 onfirming or ruling out the dark matter interpretation of the gamma-ra
 y line.  I will then talk about neutrinos as a probe of dark matter.  
 Neutrinos are the best probe of TeV-scale dark matter annihilation sig
 nal and I will show that galaxy clusters are the best indirect detecti
 on target for a neutrino telescope like IceCube -- this has been recen
 tly confirmed by the IceCube collaboration.  Additionally I will also 
 show how meson decay or W decay can constrain certain models of dark m
 atter which have been proposed recently to solve all small-scale struc
 ture problems in LambdaCDM cosmology.
URL:https://www.physics.wisc.edu/events/?id=3018
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