Dark matter constraints from observations of dwarf spheroidal - - PowerPoint PPT Presentation
Dark matter constraints from observations of dwarf spheroidal galaxies with the Fermi-LAT Christian Farnier, LPTA, CNRS, UM2 on behalf of the Fermi-LAT collaboration Outline Dark matter searches through -ray and targets Analysis &
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PPE
l.o.s
2l
PP E=1
2
f
Nb of annihilations Nb of γ per annihilation
(Poster 134 – Y. Edmonds)
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➢ dSphs are the most DM dominated systems known in the
➢ Many of them (at least 6) closer than 100 kpc to the GC (e.g.
➢ SDSS [only ¼ of the sky covered] already double the number of
➢ Most of them are expected to be free from any other
✔ Low content in gas and dust. ✔ In comparison with the GC possibly the better option
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Submitted to ApJL
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