07/11/2023 New Open Access paper

New Open Access paper is published in Issue 7 (July 2023):

M. E. Kalyashova, A. M. Bykov & D. V. Badmaev, Cosmic Ray Enrichment with 22Ne in Young Massive Star Clusters, Bulletin of the Russian Academy of Sciences: Physics, volume 87, issue 7, pages 1023-1026 (2023).

We developed the hypothesis that the 22Ne overabundance in cosmic rays (CRs) is generated in massive star clusters which contain populations of Wolf–Rayet stars. Winds of Wolf–Rayet stars are considered to have high content of 22Ne. We present a model of cosmic ray enrichment with 22Ne in young massive star clusters, adding isotopic yields from supernovae and considering the acceleration efficiency during the lifetime of the stars. The impact of the parameters (the initial mass function in the cluster, rotation velocity, black hole cut-off mass) is discussed. The luminosity of the sources is found to be sufficient to provide the observed CR flux. The local source hypothesis is investigated..

More about Open Access publications in the journal.