Physics
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..aprs10008d&link_type=abstract
American Physical Society, April Meeting, 2004, May 1-4, 2004, Denver, Colorado April 2004, MEETING ID: APR04, abstract #S10.008
Physics
Scientific paper
Luminous infrared galaxies (LIGs), starburst galaxies with infrared luminosities greater than 10^11 L_&sun;, are generally regarded as resulting from recent mergers of gas-rich galaxies in which most of the gas has collapsed to a common center. The abundance of dense gas and associated massive stars and supernova remnants in LIGS suggests that they should be relatively luminous sources of gamma rays produced by cosmic-ray interactions with interstellar gas and photons. For what are likely to be the brightest LIGs in gamma rays we present upper limits for their fluxes determined from observations with the Energetic Gamma-Ray Experiment Telescope (EGRET). We also present quantitative estimates of the minimum cosmic-ray densities required for detection of the LIGs with the Large Area Telescope, which is under development for launch by NASA in 2007 on the Gamma-ray Large Area Space Telescope (GLAST) mission, and with ground-based Imaging Atmospheric Cherenkov Telescopes (IACTs). We anticipate that LIGs will be new class of sources for the coming generation of gamma-ray telescopes.
Digel Seth William
Domingo-Santamaria Eva
Reimer Olaf
Torres Diego F.
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