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Title: Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals

Abstract

Here, we investigate the sensitivity of the Gamma-ray Large Area Space Telescope (GLAST) to indirectly detect weakly interacting massive particles (WIMPs) through the γ-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. Lastly, we also discuss the potential of the LAT to detect UED via the electron/positron channel. Diffuse background modeling and other background issues thatmore » will be important in setting limits or seeing a signal are presented.« less

Authors:
 [1];  [1];  [2];  [3];  [1];  [3];  [1];  [1];  [3];  [1];  [3];  [1];  [4];  [5];  [6];  [7];  [6];  [8];  [9];  [10] more »;  [11];  [4];  [3];  [4];  [12];  [1];  [1];  [4] « less
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst. for Particle Astrophysics & Cosmology (KIPAC)
  2. Univ. Pierre et Marie Curie, Paris (France). Institut d'Astrophysique de Paris
  3. Stockholm Univ. (Sweden). Dept. of Physics
  4. The Ohio State Univ., Columbus, OH (United States)
  5. Univ. of California, Santa Cruz, CA (United States). Santa Cruz Inst. for Particle Physics
  6. Univ. of Rome Tor Vergata (Italy). Istituto Nazionale di Fisica Nucleare (INFN)
  7. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States). Center for Research and Exploration in Space Science & Technology (CRESST) and AstroParticle Physics Lab.
  8. Stanford Univ., CA (United States). Hansen Experimental Physics Lab. and Kavli Inst. for Particle Astrophysics and Cosmology
  9. Univ. of Montpellier (France)
  10. Univ. of Denver, CO (United States)
  11. Istituto Nazionale di Fisica Nucleare (INFN), Padova (Italy)
  12. Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautic and Space Administration (NASA)
OSTI Identifier:
1357323
Grant/Contract Number:  
AC02-76SF00515; FG02-91ER40690
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2008; Journal Issue: 07; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Baltz, E. A., Berenji, B., Bertone, G., Bergström, L., Bloom, E., Bringmann, T., Chiang, J., Cohen-Tanugi, J., Conrad, J., Edmonds, Y., Edsjö, J., Godfrey, G., Hughes, R. E., Johnson, R. P., Lionetto, A., Moiseev, A. A., Morselli, A., Moskalenko, I. V., Nuss, E., Ormes, J. F., Rando, R., Sander, A. J., Sellerholm, A., Smith, P. D., Strong, A. W., Wai, L., Wang, P., and Winer, B. L. Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals. United States: N. p., 2008. Web. doi:10.1088/1475-7516/2008/07/013.
Baltz, E. A., Berenji, B., Bertone, G., Bergström, L., Bloom, E., Bringmann, T., Chiang, J., Cohen-Tanugi, J., Conrad, J., Edmonds, Y., Edsjö, J., Godfrey, G., Hughes, R. E., Johnson, R. P., Lionetto, A., Moiseev, A. A., Morselli, A., Moskalenko, I. V., Nuss, E., Ormes, J. F., Rando, R., Sander, A. J., Sellerholm, A., Smith, P. D., Strong, A. W., Wai, L., Wang, P., & Winer, B. L. Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals. United States. doi:10.1088/1475-7516/2008/07/013.
Baltz, E. A., Berenji, B., Bertone, G., Bergström, L., Bloom, E., Bringmann, T., Chiang, J., Cohen-Tanugi, J., Conrad, J., Edmonds, Y., Edsjö, J., Godfrey, G., Hughes, R. E., Johnson, R. P., Lionetto, A., Moiseev, A. A., Morselli, A., Moskalenko, I. V., Nuss, E., Ormes, J. F., Rando, R., Sander, A. J., Sellerholm, A., Smith, P. D., Strong, A. W., Wai, L., Wang, P., and Winer, B. L. Thu . "Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals". United States. doi:10.1088/1475-7516/2008/07/013. https://www.osti.gov/servlets/purl/1357323.
@article{osti_1357323,
title = {Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals},
author = {Baltz, E. A. and Berenji, B. and Bertone, G. and Bergström, L. and Bloom, E. and Bringmann, T. and Chiang, J. and Cohen-Tanugi, J. and Conrad, J. and Edmonds, Y. and Edsjö, J. and Godfrey, G. and Hughes, R. E. and Johnson, R. P. and Lionetto, A. and Moiseev, A. A. and Morselli, A. and Moskalenko, I. V. and Nuss, E. and Ormes, J. F. and Rando, R. and Sander, A. J. and Sellerholm, A. and Smith, P. D. and Strong, A. W. and Wai, L. and Wang, P. and Winer, B. L.},
abstractNote = {Here, we investigate the sensitivity of the Gamma-ray Large Area Space Telescope (GLAST) to indirectly detect weakly interacting massive particles (WIMPs) through the γ-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. Lastly, 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.},
doi = {10.1088/1475-7516/2008/07/013},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2008,
place = {United States},
year = {2008},
month = {7}
}

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