The dependence of the 22Ne/20Ne ratio on the distribution of massive stars in the galaxy

Research output: Contribution to conferencePaperpeer-review

Abstract

In this paper we introduce a new technique to calculate the variation of the 22Ne/20Ne ratio at different galactic locations and the dependence of this ratio on the distribution of massive stars in the galaxy. Most of previously developed methods focused on explaining the anamoly ratio variation between the galactic and solar 22Ne/20Ne but never pointed out to the possibility of the ratio variation at different galactic locations. We examined the ratio at different locations outside the solar system. We show that the distribution of the massive stars in the galaxy have a major effect on the abundance ratio which means that this anomaly in the ratio is not something unique between the solar system and the galactic cosmic rays. In this work we will concentrate on the effect of the Wolf-Rayet(WR) stars with initial masses generally 40 times larger than the mass of the sun. The flexibility of the technique introduced in this work will allow us to individually examine all the sources that can produce certain cosmic ray nuclei in the galaxy and estimate the probability of survival of the 22Ne/20Ne as a function of the radial distance of the WR stars from the solar system.

Original languageEnglish
Pages105-108
Number of pages4
StatePublished - 2007

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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