Pre-launch estimates for GLAST sensitivity to Dark Matter annihilation signals
Abstract
We investigate the sensitivity of the Gamma-ray Large Area Space Telescope (GLAST) to indirectly detect weakly interacting massive particles (WIMPs) through the -ray signal that their pair annihilation produces. WIMPs are among the favorite candidates to explain the compelling evidence that about 80% of the mass in the Universe is non-baryonic dark matter (DM). They are serendipitously motivated by various extensions of the standard model of particle physics such as Supersymmetry and Universal Extra Dimensions (UED). With its unprecedented sensitivity and its very large energy range (20 MeV to more than 300 GeV) the main instrument on board the GLAST satellite, the Large Area Telescope (LAT), will open a new window of discovery. As our estimates show, the LAT will be able to detect an indirect DM signature for a large class of WIMP models given a cuspy profile for the DM distribution. Using the current state of the art Monte Carlo and event reconstruction software developed within the LAT collaboration, we present preliminary sensitivity studies for several possible sources inside and outside the Galaxy. We also discuss the potential of the LAT to detect UED via the electron/positron channel. Diffuse background modeling and other background issues that will be important in setting limits or seeing a signal are presented.
Cite
@article{arxiv.0806.2911,
title = {Pre-launch estimates for GLAST sensitivity to Dark Matter annihilation signals},
author = {E. A. Baltz and B. Berenji and G. Bertone and L. Bergstrom and E. Bloom and T. Bringmann and J. Chiang and J. Cohen-Tanugi and J. Conrad and Y. Edmonds and J. Edsjo and G. Godfrey and R. E. Hughes and R. P. Johnson and A. Lionetto and A. A. Moiseev and A. Morselli and I. V. Moskalenko and E. Nuss and J. F. Ormes and R. Rando and A. J. Sander and A. Sellerholm and P. D. Smith and A. W. Strong and L. Wai and P. Wang and B. L. Winer},
journal= {arXiv preprint arXiv:0806.2911},
year = {2009}
}
Comments
49 pages, 29 figures, JCAP in press