On the Detectability of Galactic Dark Matter Annihilation into Monochromatic Gamma-rays
Abstract
Monochromatic gamma-rays are thought to be the smoking gun signal for identifying the dark matter annihilation. However, the flux of monochromatic gamma-rays is usually suppressed by the virtual quantum effects since dark matter should be neutral and does not couple with gamma-rays directly. In the work we study the detection strategy of the monochromatic gamma-rays in a future space-based detector. The monochromatic gamma-ray flux is calculated by assuming supersymmetric neutralino as a typical dark matter candidate. We discuss both the detection focusing on the Galactic center and in a scan mode which detects gamma-rays from the whole Galactic halo are compared. The detector performance for the purpose of monochromatic gamma-rays detection, with different energy and angular resolution, field of view, background rejection efficiencies, is carefully studied with both analytical and fast Monte-Carlo method.
Keywords
Cite
@article{arxiv.1008.2046,
title = {On the Detectability of Galactic Dark Matter Annihilation into Monochromatic Gamma-rays},
author = {Zhi-Cheng Tang and Qiang Yuan and Xiao-Jun Bi and Guo-Ming Chen},
journal= {arXiv preprint arXiv:1008.2046},
year = {2015}
}