Computer Science
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..921..157c&link_type=abstract
THE FIRST GLAST SYMPOSIUM. AIP Conference Proceedings, Volume 921, pp. 157-159 (2007).
Computer Science
4
Gamma-Ray Sources, Gamma-Ray Bursts, X- And Gamma-Ray Telescopes And Instrumentation, Active And Peculiar Galaxies And Related Systems
Scientific paper
An often overlooked fact is that the MeV-GeV emission from High-energy peaked BL Lacs (HBL) is basically unknown: there are only 3 objects of this type among all EGRET identified blazars with measured spectra. GLAST will be able to measure the spectrum for many of them, in particular TeV-blazars, and surprises are expected. GLAST will tell if the γ-ray peak in some HBL is actually a ``double peak'', as suggested by the comparison of EGRET and HESS data in PKS 2155-304, We also remind and argue that a new class of BL Lacs could exist, where particles are shock-accelerated near the maximum possible rate, characterized by the synchrotron emission peaking in the GLAST band (100 MeV - few GeV). Such objects could easily have escaped detection or identification so far, and could now be unveiled by GLAST.
Aharonian Felix
Costamante Luigi
Khangulyan Dmitry
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