Tracing the sources of cosmic rays with molecular ions
Artikel i vetenskaplig tidskrift, 2011

The rate of ionization by cosmic rays (CRs) in interstellar gas directly associated with γ-ray-emitting supernova remnants (SNRs) is for the first time calculated to be several orders of magnitude larger than the Galactic average. Analysis of ionization-induced chemistry yields the first quantitative prediction of the astrophysical H2+ emission line spectrum, which should be detectable together with H3+ lines. The predicted coincident observation of those emission lines and γ-rays will help prove that SNRs are sources of CRs.

interstellar molecular ions

cosmic rays

supernova remnants


Julia K. Becker

Ruhr-Universität Bochum

John H Black

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

Safarzadeh Mohammadtaher

Johns Hopkins University

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

Florian Schuppan

Ruhr-Universität Bochum

Astrophysical Journal Letters

2041-8205 (ISSN) 2041-8213 (eISSN)

Vol. 739 October 1 L43 (5 pages)- L43


Subatomär fysik

Astronomi, astrofysik och kosmologi


Grundläggande vetenskaper


Onsala rymdobservatorium



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