Computer Science – Performance
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..921..359r&link_type=abstract
THE FIRST GLAST SYMPOSIUM. AIP Conference Proceedings, Volume 921, pp. 359-360 (2007).
Computer Science
Performance
1
Gamma-Ray Sources, Gamma-Ray Bursts, Background Radiations, Active And Peculiar Galaxies And Related Systems, X- And Gamma-Ray Telescopes And Instrumentation
Scientific paper
The Large Area Telescope (LAT) on board GLAST (Gamma-ray Large Area Space Telescope) due for launch in late 2007 will study the gamma-ray sky in the energy range 20 MeV to >300 GeV. GLAST-LAT's improved sensitivity with respect to previous missions will increase the number of known blazars from about 100 to thousands, with redshifts up to z ~3-5. Since gamma rays with energy above 10 GeV interact via pair-production with photons from the Extragalactic Background Light (EBL), the systematic attenuation of GLAST-detected blazars as a function of redshift would constitute and effective and unique probe to the optical-UV EBL density and its evolution over cosmic history. Based on the GLAST-LAT instrument performance, simulations of expected blazar populations attenuated by EBL have been performed.
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