Critical reexamination of electromagnetic gamma-ray source functions

Details Critical reexamination of electromagnetic gamma-ray source functions Critical reexamination of electromagnetic gamma-ray source functions

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977esasp.124..219s&link_type=abstract

In ESA Recent Advan. in Gamma-Ray Astronomy p 219-224 (SEE N78-11899 02-88)

Astronomy and Astrophysics

Astronomy

3

Cosmic Rays, Gamma Rays, Radiation Sources, Bremsstrahlung, Compton Effect, Galactic Radiation, High Energy Electrons, Interstellar Gas, Microwaves

Scientific paper

Cosmic gamma-ray production by bremsstrahlung in the interstellar gas and inverse Compton scattering of 2.7 K blackbody microwave photons involves cosmic ray electrons with energies below 1 GeV and above 100 GeV, respectively. In these energy ranges the electron energy spectrum is rather poorly known and quite uncertain. The influence of this uncertainty on the gamma-ray source functions was estimated. It is shown that for both processes the integral source function above 100MeV is uncertain to at least a factor of 8 (bremsstrahlung) and 6 (microwave photon scattering). The consequences for galactic and extragalactic gamma ray astronomy are discussed.

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