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Astrophysics and Space Science

, 359:31 | Cite as

Modelling of the radio spectrum evolution in the binary pulsar B1259−63

  • M. DembskaEmail author
  • J. Kijak
  • O. Koralewska
  • W. Lewandowski
  • G. Melikidze
  • K. Rożko
Original Article

Abstract

In this paper we give the first attempt to model the evolution of the spectrum of PSR B1259−63 radio emission while the pulsar orbits the companion Be star. As suggested by Kijak et al. (Mon. Not. R. Astron. Soc. 418:L114, 2011a) this binary system can be useful in understanding the origin of the gigahertz-peaked spectrum of pulsars. The model explains, at least qualitatively, the observed alterations of the spectral shape depending on the orbital phases of this pulsar. Thus, our results support the hypothesis that the external factors have a significant impact on the observed radio emission of a pulsar. The model can also contribute to our understanding of the origin of some non-typical spectral shapes (e.g. flat or broken spectra).

Keywords

Pulsars PSR B1259–63 Stars: binaries 

Notes

Acknowledgements

This paper was supported by the grants DEC-2012/05/B/ST9/03924 and DEC-2013/09/B/ST9/02177 of the Polish National Science Centre. MD was a scholar within Sub-measure 8.2.2 Regional Innovation Strategies, Measure 8.2 Transfer of knowledge, Priority VIII Regional human resources for the economy Human Capital Operational Programme co-financed by European Social Fund and state budget.

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • M. Dembska
    • 1
    Email author
  • J. Kijak
    • 2
  • O. Koralewska
    • 2
  • W. Lewandowski
    • 2
  • G. Melikidze
    • 2
    • 3
  • K. Rożko
    • 2
  1. 1.Institute of Space SystemsGerman Aerospace Center (DLR)BremenGermany
  2. 2.Institute of AstronomyUniversity of Zielona GóraZielona GóraPoland
  3. 3.Abastumani Astrophysical ObservatoryIlia State UniversityTbilisiGeorgia

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