Inverse Compton constraints on the Dark Matter e+e- excesses

By Marco Cirelli, P. Panci. 2009

154 citations recorded by the source corpus.

Abstract Recent results from experiments like PAMELA have pointed to excesses of e ± in cosmic rays. If interpreted in terms of Dark Matter annihilations, they imply the existence of an abundant population of e ± in the galactic halo at large. We consider the high energy gamma ray fluxes produced by Inverse Compton Scattering of interstellar photons on such e ± , and compare them with the available data from EGRET and some preliminary data from FERMI. We consider different observation regions of the sky and a range of DM masses, annihilation channels and DM profiles. We find that large portions of the parameter space are excluded, in particular for DM masses larger than 1 TeV, for leptonic annihilation channels and for benchmark Einasto or NFW profiles.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/181f62ffb40e53051935895481d3f2a2b6b32d5b

Citations in the corpus

• THE FERMI HAZE: A GAMMA-RAY COUNTERPART TO THE MICROWAVE HAZE (2009, unknown): “7 See http://fermi.gsfc.nasa.gov/ssc/data/ 2 Cholis et al. (2009a); Zhang et al. (2009); Borriello et al. (2009); Cirelli & Panci (2009); Regis & Ullio (2009); Belikov & Hooper (2009); Meade et al. (2009).”