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ASTRA Proceedings An open-access journal for refereed proceedings in extraterrestrial research
Journal topic
Articles | Volume 1
ASTRA Proc., 1, 13–17, 2014
ASTRA Proc., 1, 13–17, 2014

  02 Jun 2014

02 Jun 2014

Ionisation as indicator for cosmic ray acceleration

F. Schuppan1, C. Röken2, N. Fedrau1, and J. Becker Tjus1 F. Schuppan et al.
  • 1Ruhr-Universität Bochum, Fakultät für Physik & Astronomie, Institut für Theoretische Physik IV, 44780 Bochum, Germany
  • 2Universität Regensburg, Fakultät für Mathematik, 93040 Regensburg, Germany

Abstract. 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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