243 articles – 3636 Notices  [english version]
 HAL : in2p3-00716276, version 1
 Code Bibliographique ADS : 2012AN....333..361T
 DOI : 10.1002/ASNA.201211674
 Astronomische Nachrichten 333 (2012) 361
 Tracing low-energy cosmic-rays by charge exchange X-ray emission
 (2012)
 Hadronic cosmic rays of energies below about 100 MeV nucleon-1 are thought to be an important component of the Galactic ecosystem. However, since these particles cannot be detected near Earth due to the solar modulation effect, their composition and flux in the interstellar medium are very uncertain. Atomic interactions of low-energy cosmic rays with interstellar gas can produce a characteristic nonthermal X-ray emission comprising very broad lines from de-excitations in fast ions following charge exchange. We suggest that broad lines at ˜0.57 and ˜0.65 keV could be detected from a dark molecular cloud in the local interstellar medium. These lines would be produced by fast oxygen ions of kinetic energies around 1 MeV nucleon-1.
 équipe(s) de recherche : CSNSM AN
 Thème(s) : Physique/Astrophysique/Instrumentation et méthodes pour l'astrophysiquePlanète et Univers/Astrophysique/Instrumentation et méthodes pour l'astrophysique
 Mot(s)-clé(s) : cosmic rays – radiation mechanism: non-thermal – X-rays: diffuse background – X-rays: ISM
 in2p3-00716276, version 1 http://hal.in2p3.fr/in2p3-00716276 oai:hal.in2p3.fr:in2p3-00716276 Contributeur : Christine Hadrossek <> Soumis le : Mardi 10 Juillet 2012, 11:45:39 Dernière modification le : Mardi 10 Juillet 2012, 12:09:22