CLUMPY: Jeans analysis, $\gamma$-ray and neutrino fluxes from dark matter (sub-)structures

V. Bonnivard (1) , M. Hütten , E. Nezri (2) , A. Charbonnier , C. Combet (1) , D. Maurin (1)

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 LAM - Laboratoire d'Astrophysique de Marseille

We present an update of the CLUMPY code for the calculation of the astrophysical J-factors (from dark matter annihilation/decay) for any Galactic or extragalactic dark matter halo including substructures: the concentration-mass relationship may now be drawn from a distribution, boost factors can include several levels of substructures, and triaxiality is a new option for dark matter haloes. This new version takes advantage of the cfitsio and HEALPix libraries to propose FITS output maps using the HEALPix pixelisation scheme. Skymaps for $\gamma$-ray and neutrino signals from generic annihilation/decay spectra are now direct outputs of CLUMPY. Smoothing by a user-defined instrumental Gaussian beam is also possible. In addition to these improvements, the main novelty is the implementation of a Jeans analysis module, to obtain dark matter density profiles from kinematic data in relaxed spherical systems (e.g., dwarf spheroidal galaxies). The code is also interfaced with the GreAT toolkit designed for Markov Chain Monte Carlo analyses, from which probability density functions and credible intervals can be obtained for velocity dispersions, dark matter profiles, and J- factors.

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

V. Bonnivard, M. Hütten, E. Nezri, A. Charbonnier, C. Combet, et al.. CLUMPY: Jeans analysis, $\gamma$-ray and neutrino fluxes from dark matter (sub-)structures. Computer Physics Communications, 2016, 200, pp.336-349. ⟨10.1016/j.cpc.2015.11.012⟩. ⟨in2p3-01169522⟩