Skip to Main content Skip to Navigation
Journal articles

Dark matter annihilation and decay profiles for the Reticulum II dwarf spheroidal galaxy

Abstract : The dwarf spheroidal galaxies (dSph) of the Milky Way are among the most attractive targets for indirect searches of dark matter. In this work, we reconstruct the dark matter annihilation (J-factor) and decay profiles for the newly discovered dSph Reticulum~II. This is done using an optimized spherical Jeans analysis of kinematic data obtained from the Michigan/Magellan Fiber System (M2FS). We find Reticulum~II to have one of the highest J-factor when compared to the other Milky Way dSphs. We have also checked the robustness of this result against several ingredients of the analysis. Unless it suffers from tidal disruption or significant inflation of its velocity dispersion from binary stars, Reticulum~II may provide a unique window on dark matter particle properties.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-01142811
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, April 16, 2015 - 8:20:43 AM
Last modification on : Friday, November 27, 2020 - 11:24:20 AM

Links full text

Identifiers

Collections

IN2P3 | LPSC | CNRS | GEPI | UGA

Citation

V. Bonnivard, C. Combet, D. Maurin, A. Geringer-Sameth, S.M. Koushiappas, et al.. Dark matter annihilation and decay profiles for the Reticulum II dwarf spheroidal galaxy. The Astrophysical journal letters, Bristol : IOP Publishing, 2015, 808 (2), pp.L36. ⟨10.1088/2041-8205/808/2/L36⟩. ⟨in2p3-01142811⟩

Share

Metrics

Record views

369