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The Relevance of Molecular Observations to Gamma-Ray Astronomy

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Galactic Astrophysics and Gamma-Ray Astronomy

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Abstract

The interaction of cosmic rays with interstellar clouds may produce some of the observed gamma-ray sources. The use of molecular observations to estimate the cloud masses, which are used to derive cosmic-ray fluxes, is reviewed. Molecular diagnostics of high cosmic-ray ionization rates are discussed, and a detailed application of those diagnostics is summarised and presented as evidence that second-order Fermi acceleration is important in old supernova remnants and can produce cosmic rays of too low energy to induce gamma-ray emission.

Proceedings of the XVIII General Assembly of the IAU: Galactic Astrophysics and Gamma-Ray Astronomy, held at Patras, Greece, 19 August 1982.

Royal Society Jaffé Donation Fellow.

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Authors and Affiliations

  1. Department of Physics and Astronomy, University College London, WC1E 6BT, London, England

    T. W. Hartquist

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  1. T. W. Hartquist
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Editors and Affiliations

  1. Institut für Extraterrestrische Physik, Max-Planck-Institut für Astrophysik, Garching b. München, Germany

    G. E. Morfill

  2. Istituto di Fisica Cosmica e Informatica del Consiglio Nazionale delle Ricerche, Palermo, Italy

    R. Buccheri

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© 1983 D. Reidel Publishing Co., Dordrecht and Boston

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Hartquist, T.W. (1983). The Relevance of Molecular Observations to Gamma-Ray Astronomy. In: Morfill, G.E., Buccheri, R. (eds) Galactic Astrophysics and Gamma-Ray Astronomy. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7208-7_4

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  • DOI: https://doi.org/10.1007/978-94-009-7208-7_4

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-7210-0

  • Online ISBN: 978-94-009-7208-7

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