Ionisation as indicator for cosmic ray acceleration

Schuppan, F.; Röken, C.; Fedrau, N.; Becker Tjus, J.

Astrospheres and wind bubbles of massive stars are believed to be sources of cosmic rays with energies E ≲ 1 TeV. These particles are not directly detectable, but their impact on surrounding matter, in particular ionisation of atomic and molecular hydrogen, can lead to observable signatures. A correlation study of both gamma ray emission, induced by proton-proton interactions of cosmic ray protons with kinetic energies Ep ≥ 280 MeV with ambient hydrogen, and ionisation induced by cosmic ray protons of kinetic energies Ep < 280 MeV can be performed in order to study potential sources of (sub)TeV cosmic rays.

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Schuppan, F. / Röken, C. / Fedrau, N. / et al: Ionisation as indicator for cosmic ray acceleration. 2014. Copernicus Publications.

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