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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/023/01-02/0149-0153

    • Keywords

       

      Accretion; accretion disc; black hole physics; winds; outflows

    • Abstract

       

      Matter accreting onto black holes suffers a standing or oscillating shock wave in much of the parameter space. The post-shock region is hot, puffed up and reprocesses soft photons from a Keplerian disc to produce the characteristic hard tail of the spectrum of accretion discs. The post-shock torus is also the base of the bipolar jets. We study the interaction of these jets with the hard photons emitted from the disc. We show that radiative force can accelerate outflows but the drag can limit the terminal speed. We introduce an equilibrium speed υeq as a function of distance, above which the flow will experience radiative deceleration.

    • Author Affiliations

       

      Indranil Chattopadhyay1 Sandip K. Chakrabarti1

      1. S N Bose National Center for Basic Sciences, Block — JD; Sector — III, Salt Lake, Kolkata—98, West Bengal, India
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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      Posted on January 27, 2016

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