Collective effects of stellar winds and unidentified gamma-ray sources

Diego F. Torres, Eva Domingo-Santamaría

    Research output: Contribution to journalArticleResearchpeer-review

    3 Citations (Scopus)

    Abstract

    We study collective wind configurations produced by a number of massive stars, and obtain densities and expansion velocities of the stellar wind gas that is to be target, in this model, of hadronic interactions. We study the expected γ-ray emission from these regions, considering in an approximate way the effect of cosmic ray modulation. We compute secondary particle production (electrons from knock-on interactions and electrons and positrons from charged pion decay), and solve the loss equation with ionization, synchrotron, bremsstrahlung, inverse Compton, and expansion losses. We provide examples where configurations can produce sources for GLAST satellite, and the MAGIC, HESS, or VERITAS telescopes in non-uniform ways, i.e., with or without the corresponding counterparts. We show that in all cases we studied no EGRET source is expected. © Springer Science+Business Media B.V. 2007.
    Original languageEnglish
    Pages (from-to)345-350
    JournalAstrophysics and Space Science
    Volume309
    Issue number1-4
    DOIs
    Publication statusPublished - 1 Jun 2007

    Keywords

    • γ-Rays
    • Unidentified γ-ray sources

    Fingerprint Dive into the research topics of 'Collective effects of stellar winds and unidentified gamma-ray sources'. Together they form a unique fingerprint.

  • Cite this