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.

cosmic rays

interstellar molecular ions

supernova remnants

Författare

Julia K. Becker

Ruhr-Universität Bochum

John H Black

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

Safarzadeh Mohammadtaher

Johns Hopkins University

Onsala Space Observatory

Florian Schuppan

Ruhr-Universität Bochum

Astrophysical Journal Letters

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

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

Ämneskategorier

Subatomär fysik

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

Infrastruktur

Onsala rymdobservatorium

DOI

10.1088/2041-8205/739/2/L43