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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Experimentelle Elementarteilchenphysik

Humboldt-Universität zu Berlin | Mathematisch-Naturwissen­schaft­liche Fakultät | Institut für Physik | Experimentelle Elementarteilchenphysik | Lehre & Studium | Seminare | Forschungsseminar | WS 2010/11 | 10.12.2010 - David Maurin (LPNHE Paris): Indirect dark matter detection and gamma-rays from dwarf spheroidal galaxies

10.12.2010 - David Maurin (LPNHE Paris): Indirect dark matter detection and gamma-rays from dwarf spheroidal galaxies

16-17h s.t.
Wann 10.12.2010 von 16:00 bis 17:00 (Europe/Berlin / UTC100) iCal
Wo LCP, NEW 14, 1'15
Kontaktname

Talk: pdf

Abstract:
Among the final state products of dark matter annihilation
are positrons, antiprotons, antideuterons and gamma-rays.
These particles are expected to be produced in large amount
in high DM density regions of the Galaxy, providing a
signal that may be detectable against the associated
astrophysical backgrounds.

In this talk, I will first review the status of indirect
dark matter detection and background prediction (in the
GeV-TeV regime) in the light of some recent experimental
results (PAMELA, FERMI, HESS...). I will then focus on the
gamma-ray signal from dwarf spheroidal galaxies (dSphs),
which are expected to be 'background-free'. Starting from
the dSph DM profile, I will briefly present the public code
CLUMPY that allows to calculate the gamma-ray signal from
any dSPh profile and possible substructures. I will then
show the result of a Markov Chain Monte Carlo analysis
performed on the classical dSphs and conclude with the
detectability of these objects by current and future
gamma-ray instruments.