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IDM2008 - Identification of Dark Matter 2008
IDM2008 - Identification of Dark Matter 2008
18-22 August 2008 AlbaNova
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Dynamics of WIMPs in the Solar System and Implications for Direct and Indirect Detection (15'+5')
 
Semi-analytic treatments of weakly interacting massive particle (WIMP) orbits in 
the solar system (e.g., Damour 
& Krauss 1999, Gould 1991, Lundberg & Edsjo 2004) suggest that the WIMPs 
bound to solar system may 
enhance the direct detection rate relative to that of the unbound population by 
up to a factor of order unity, as 
well as boost the flux of neutrinos from WIMP annihilation in the Earth up to 
two orders of magnitude.  Given 
these intriguing implications, it is worthwhile to check the semi-analytic 
approximations with numerical 
integrations of particle orbits in the solar system.  We present the results of a 
suite of numerical experiments to 
explore the size of the bound WIMP population as a function of WIMP mass and 
the elastic scattering cross section 
with baryonic matter.  For regions of WIMP parameter space not yet excluded by 
experiments, we find that the 
bound WIMP population enhances the direct detection rate by at most $\approx 
1\%$ relative to the halo WIMP 
rate.  It is unlikely that neutrinos from WIMP annihilation in the Earth will be 
observed in upcoming km$^3$-
scale neutrino telescopes.  The event rate from neutrinos from WIMP 
annihilation in the Sun will depend on the 
WIMP mass and elastic cross section in ways that have not been previously 
explored.
 
Id: 370
Place: AlbaNova
Room: Oskar Klein auditorium
Starting date:
21-Aug-2008   09:20
Duration: 20'
Contribution type: Talk
Primary Authors: Dr. PETER, Annika (California Institute of Technology)
Presenters: Dr. PETER, Annika
Material: slide Slides
 
Included in session: Dark matter phenomenology / theory
Included in track: Dark matter phenomenology / theory
 

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