Gamma Ray Astronomy (WG I): Science Results

Details Gamma Ray Astronomy (WG I): Science Results Gamma Ray Astronomy (WG I): Science Results

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jphcs..60...78k&link_type=abstract

Journal of Physics: Conference Series, Volume 60, Issue 1, pp. 78-83 (2007).

Physics

Scientific paper

TeV astronomy is currently dominated by Very High Energy1 (VHE) γ-ray observations using a new generation of ground-based atmospheric Cherenkov telescopes. A few years of data taking with these instruments have yielded a spectacular view of the universe, probing some of the key science questions in high energy astrophysics today. TeV γ-ray observations may be pivotal in solving the question of the origin of cosmic rays, in understanding the physics of relativistic jets and their connection to black holes, may help us in disecting different contributions to the diffuse γ-ray emission from the galactic plane and provide prospects for astrophysical dark matter detection. The interpretation of extragalactic VHE γ-ray sources is complicated by appreciable absorption o. intergalactic diffuse radiation known as the Extragalactic Background Light (EBL). Attenuation features in TeV spectra of extraglactic sources due to the EBL provide an important link to optical/infrared astronomy and Cosmology.
VHE γ-ray astronomy is spearheading the TeV sky and has advanced our understanding of physical parameters in astrophysical sources at the highest energies through major improvements in the imaging capability and time resolved spectroscopy with the imaging atmospheric Cherenkov technique. Many aspects of the science questions addressed by TeV γ-ray observations will undoubtedly have consequences for neutrino astronomy in the next decade. This paper provides a brief summary of the scientific results and observations reported at the Working Group on Gamma Ray Astronomy at this conference.

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