Constraining Galactic $pγ$ Interactions with Cosmic Ray Electron and Positron Spectra

Details Constraining Galactic $pγ$ Interactions with Cosmic Ray Electron and Positron Spectra Constraining Galactic $pγ$ Interactions with Cosmic Ray Electron and Positron Spectra

2006-10-26

arxiv.org/abs/astro-ph/0610770v2

Chin.J.Astron.Astrophys.8:153-158,2008

Astronomy and Astrophysics

Astrophysics

8 pages, title slightly modified, results corrected

Scientific paper

High energy protons produced by various sources of cosmic rays, {\it e.g.} supernova remnants, pulsar wind nebulae, active galactic nuclei and gamma-ray bursts participate in $p\gamma$ and $pp$ interactions. Although $pp$ interactions may be the dominant mechanism in our Galaxy, it is unclear how important $p\gamma$ process is. We show that the upper bound on the fraction of protons participating in $p\gamma$ interactions inside all Galactic astrophysical sources of cosmic rays is 10%.

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