Publication: Gamma-ray and neutrino fluxes from Heavy Dark Matter in the Galactic Center
Loading...
Official URL
Full text at PDC
Publication Date
2015
Authors
Gammaldi, Viviana
Cruz Dombriz, Álvaro de la
Lineros, R.A.
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Citations
Exportar
Abstract
We present a study of the Galactic Center region as a possible source of both secondary gamma-ray and neutrino fluxes from annihilating dark matter. We have studied the gamma-ray flux observed by the High Energy Stereoscopic System (HESS) from the J1745-290 Galactic Center source. The data are well fitted as annihilating dark matter in combination with an astrophysical background. The analysis was performed by means of simulated gamma spectra produced by Monte Carlo event generators packages. We analyze the differences in the spectra obtained by the various Monte Carlo codes developed so far in particle physics. We show that, within some uncertainty, the HESS data can be fitted as a signal from a heavy dark matter density distribution peaked at the Galactic Center, with a power-law for the background with a spectral index which is compatible with the Fermi-Large Area Telescope (LAT) data from the same region. If this kind of dark matter distribution generates the gamma-ray flux observed by HESS, we also expect to observe a neutrino flux. We show prospective results for the observation of secondary neutrinos with the Astronomy with a Neutrino Telescope and Abyss environmental RESearch project (ANTARES), Ice Cube Neutrino Observatory (Ice Cube) and the Cubic Kilometer Neutrino Telescope (KM3NeT). Prospects solely depend on the device resolution angle when its effective area and the minimum energy threshold are fixed.
Description
© 2015 Published by Elsevier B.V. International Conference on Topics in Astroparticle and Underground Physics (TAUP) (13th. 2013. Monterey Peninsula, CA, EEUU). This work was supported by UCM FPI grants G/640/400/8000 (2011 Program), the Spanish MINECO projects numbers FIS2011-23000, FPA2011-27853-C02-01and MULTIDARK CSD2009-00064 (ConsoliderIngenio 2010 Programme). A.d.l.C.D. also acknowledges the hospitality of IFAE-UAB in the final stages of preparation of this manuscript.