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Positron annihilation signatures associated with the outburst of the microquasar V404 Cygni

Author

Listed:
  • Thomas Siegert

    (Max-Planck-Institut für extraterrestrische Physik)

  • Roland Diehl

    (Max-Planck-Institut für extraterrestrische Physik)

  • Jochen Greiner

    (Max-Planck-Institut für extraterrestrische Physik)

  • Martin G. H. Krause

    (Max-Planck-Institut für extraterrestrische Physik
    Universitäts-Sternwarte München, Ludwig-Maximilians-Universität)

  • Andrei M. Beloborodov

    (Columbia University)

  • Marion Cadolle Bel

    (Max Planck Computing and Data Facility)

  • Fabrizia Guglielmetti

    (Max-Planck-Institut für extraterrestrische Physik)

  • Jerome Rodriguez

    (Laboratoire Astrophysique Instrumentation Modélisation, UMR 7158, CEA/CNRS/Université Paris Diderot, CEA DSM/IRFU/SAp)

  • Andrew W. Strong

    (Max-Planck-Institut für extraterrestrische Physik)

  • Xiaoling Zhang

    (Max-Planck-Institut für extraterrestrische Physik)

Abstract

Observations of γ-ray emission from the microquasar V404 Cygni during a recent period of strong flaring activity show spectral features at around 511 kiloelectronvolts, which are clear signatures of variable positron annihilation, implying a high rate of positron production.

Suggested Citation

  • Thomas Siegert & Roland Diehl & Jochen Greiner & Martin G. H. Krause & Andrei M. Beloborodov & Marion Cadolle Bel & Fabrizia Guglielmetti & Jerome Rodriguez & Andrew W. Strong & Xiaoling Zhang, 2016. "Positron annihilation signatures associated with the outburst of the microquasar V404 Cygni," Nature, Nature, vol. 531(7594), pages 341-343, March.
    • Handle: RePEc:nat:nature:v:531:y:2016:i:7594:d:10.1038_nature16978
    DOI: 10.1038/nature16978
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