Gamma-ray astrophysics: A new look at the universe

Details Gamma-ray astrophysics: A new look at the universe Gamma-ray astrophysics: A new look at the universe

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7827034t&link_type=abstract

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Astronomy and Astrophysics

Astrophysics

Astrophysics, Cosmology, Gamma Ray Astronomy, Universe, Cosmic Rays, Energetic Particles, Energy Transfer, Galactic Radiation, Photons

Scientific paper

Gamma-ray astronomy which includes the spectral region from above approximately 100 keV to greater than or equal to 1000 GeV permits investigation of the most energetic photons originating in our galaxy and beyond and provides the most direct means of studying the largest transfers of energy occurring in astrophysical processes. Of all the electromagnetic spectrum, high-energy gamma-ray astronomy measures most directly the presence and dynamic effects of the energetic charged cosmic ray particles, element synthesis, and particle acceleration. Further, gamma rays suffer negligible absorption or scatterings as they travel in straight paths; hence, they may survive billions of years and still reveal their source. The high energy processes in stellar objects (including our Sun), the dynamics of the cosmic-ray gas, the formation of clouds and nebulae, galactic evolution and even certain aspects of cosmology and the origin of the universe may be explored by gamma-ray observations.

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