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1 results

  • On the hadronic γ-ray emission from Tycho's Supernova Remnant†

  • Xiao Zhang, Yang Chen, Hui Li, Xin Zhou
  • Journal:
    Proceedings of the International Astronomical Union / Volume 9 / Issue S296 / January 2013
    Published online by Cambridge University Press:
    29 January 2014, pp. 358-359
    Print publication:
    January 2013
    • Article
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  • Tycho is one of nearly a dozen Galactic supernova remnants which are suggested to emit hadronic γ-ray emission. Among them, however, it is the only one in which the hadronic emission is proposed to arise from the interaction with low-density ambient medium. Based on the multi-band observations, we suggest that Tycho is encountering dense cloud at the northeastern boundary. The γ-ray emissions can be explained by hadronic process with self-consistent parameters, such as a modest energy conversion efficiency. In this SNR-cloud association scenario, the distance can be estimated as ~2.5 kpc.