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Tracing the sources of cosmic rays with molecular ions

Julia K. Becker ; John H. Black (Institutionen för rymd- och geovetenskap, Radioastronomi och astrofysik) ; Safarzadeh Mohammadtaher ; Florian Schuppan
Astrophysical Journal Letters (2041-8205). Vol. 739 (2011), October 1, p. L43 (5 pages).
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: cosmic rays, supernova remnants, interstellar molecular ions



Denna post skapades 2011-09-08. Senast ändrad 2014-09-02.
CPL Pubid: 145973

 

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