Galactic disk gamma rays and inverse Compton effect of electrons on starlight

Details Galactic disk gamma rays and inverse Compton effect of electrons on starlight Galactic disk gamma rays and inverse Compton effect of electrons on starlight

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979afz....15...97f&link_type=abstract

(Astrofizika, vol. 15, Jan.-Mar. 1979, p. 97-103.) Astrophysics, vol. 15, no. 1, July 1979, p. 60-63. Translation.

Astronomy and Astrophysics

Astronomy

Cerenkov Radiation, Compton Effect, Galactic Radiation, Gamma Ray Astronomy, Electron Density (Concentration), High Energy Electrons, Photon Density

Scientific paper

Detection of Cherenkov flashes of extensive air showers has revealed a reduction in the flux intensity of cosmic rays with energy of about 10 to the 12th eV in the range of galactic latitudes less than or about equal to 1.5 deg (absolute value). The mean amplitude of the effect is -0.7 + or - 0.2% of the cosmic-ray background. The existence of the effect is confirmed by analysis of the observations of other authors. It is suggested that the observed effect is due to galactic gamma rays produced by the inverse Compton effect of high-energy electrons on starlight. It is assumed that the photon density is lower near the equator than at the edge of the galactic disk as a result of absorption by dust. The numerical calculations agree satisfactorily with the experimental results, provided the electron density in the disk and the difference in the photon densities between regions lying at the edge of the disk and at the equator are several times greater than for the neighborhood of the sun.

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