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- W12067698 abstract "The dominant part of the diffuse gamma rays beyond 1 TeV from the Galactic plane has been thought as due to the inverse Compton scattering of interstellar photons with high-energy cosmic-ray electrons. In these energy regions, diffuse gamma-ray observations give us unique information on the energy spectrum of high-energy electron in the interstellar space, since we cannot observe those electrons directly. We made a calculation with |b|≤ 2 ◦ and |b|≤ 5 ◦ for the diffuse gamma rays in the case of 3 spatial distribution in the Galaxy of cosmicray sources, and the results are compared with the most recent observed data by air shower experiments. We draw a restriction for the injection spectrum of high-energy electrons at the sources. It is also pointed out that patchy structure of the gamma-ray distribution will appear at high-energy side, if we observe the distribution with a higher angular resolution of a few arc degrees. This patchy structure will become distinct beyond 10TeV of IC gamma rays, where number of contributing sources of parent electrons decrease and their diffusion distance become smaller. 1. Formulations We calculate the electron spectrum by using a diffusion model. Ignoring the effect of the radial diffusion, electron flux Je at a distance, z, perpendicular to the Galactic plane after they accelerated t years ago, is given by," @default.
- W12067698 created "2016-06-24" @default.
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- W12067698 date "2002-01-01" @default.
- W12067698 modified "2023-09-27" @default.
- W12067698 title "High Energy Diffuse Gamma-Rays from Galactic Plane" @default.
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- W12067698 hasPublicationYear "2002" @default.
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