On The Gamma-Ray Emission From Reticulum II and Other Dwarf Galaxies
作者： Dan Hooper , Tim Linden
DOI: 10.1088/1475-7516/2015/09/016
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摘要: The recent discovery of ten new dwarf galaxy candidates by the Dark Energy Survey (DES) and Panoramic Telescope Rapid Response System (Pan-STARRS) could increase Fermi Gamma-Ray Space Telescope's sensitivity to annihilating dark matter particles, potentially enabling a definitive test interpretation long-standing Galactic Center gamma-ray excess. In this paper, we compare previous analyses data from directions (including relatively nearby Reticulum II) perform our own analysis, with goal establishing statistical significance any signal these sources. We confirm presence an excess II, spectral shape that is compatible signal. emission greater than observed 99.84% randomly chosen high-latitude blank-sky locations, corresponding local detection 3.2 sigma. improve upon standard calibration approach through use multi-wavelength catalogs, which allow us avoid regions are likely contain unresolved
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