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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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WIMP halo around the Sun and prospects for gamma ray detection (15'+5')
 
If the dark matter consists of a WIMP of some sort, the non-zero cross section 
with
ordinary matter will make the WIMPs cluster around heavy objects, such as the 
Sun,
giving the Sun a WIMP halo. WIMP annihilations within this halo would give rise 
to
gamma rays with very low background since the Sun does not  produce photons 
with such
high energies. 
We have made quite detailed Monte Carlo simulations of this overdensity of 
WIMPs
around the Sun and calculated the gamma ray flux at earth from this halo. It is
interesting to note that the density of WIMPs around the Sun does effectively 
not
depend on the magnitude of the cross section with ordinary matter, which is 
often
crucial in other searches for dark matter. 
Unfortunately, however, the calculated gamma ray flux at Earth from the WIMP 
halo
around the Sun is found to be quite low.
 
Id: 399
Place: AlbaNova
Room: FB42
Starting date:
20-Aug-2008   08:30
Duration: 20'
Contribution type: Talk
Primary Authors: Ms. SIVERTSSON, Sofia (Teoretisk Fysik, KTH)
Co-Authors: Dr. EDSJö, Joakim (Stockholm University)
Presenters: Ms. SIVERTSSON, Sofia
Material: slide Slides
 
Included in session: Indirect searches - gammas, neutrinos, etc
Included in track: Indirect searches - gammas
 

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