Constraining Dark Matter hypothesis through Diffuse Source observations with the GLAST-LAT detector

TL;DR

This paper discusses how the GLAST-LAT gamma-ray observatory can be used to detect dark matter signals, especially from diffuse sources like extragalactic radiation, through gamma-ray flux and line searches.

Contribution

It provides an overview of the capabilities of GLAST-LAT for dark matter detection, focusing on diffuse gamma-ray sources and annihilation signals.

Findings

Potential to detect gamma-ray flux from WIMP annihilations.

Sensitivity to gamma-ray lines from annihilation into gamma-gamma and gamma-Z.

Enhanced understanding of extragalactic diffuse gamma-ray radiation.

Abstract

The Gamma-Ray Large Area Space Telescope (GLAST), scheduled to be launched in Fall 2007, is a next generation high energy gamma-ray observatory. The Large Area Telescope (LAT) instrument on-board GLAST with a wide field of view ($>$ 2 sr), large effective area and 20 MeV to $>$300 GeV energy range, will provide excellent opportunity for future Dark Matter studies. We present an overview of the GLAST Dark Matter and New Physics Working Group efforts in the study of the LAT capability to detect a gamma-ray flux coming from WIMP pair annihilations in diffuse astrophysical sources. Particular attention will be given to extragalactic diffuse gamma-ray radiation and line searches from annihilation into gamma-gamma and/or gamma-Z final states.