Sebastian Heinz

Publications (3)36.28 Total impact

• Source

  Available from: ArXiv

  Article: Jet trails and Mach cones: The interaction of microquasars with the ISM

  Doosoo Yoon, Brian Morsony, Sebastian Heinz, Klass Wiersema, Rob Fender, David Russell, Rashid Sunyaev
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  ABSTRACT: A sub-set of microquasars exhibit high peculiar velocity with respect to the local standard of rest due to the kicks they receive when being born in supernovae. The interaction between the radio plasma released by microquasar jets from such high-velocity binaries with the ISM must lead to the production of trails and bow shocks similar to what is observed in narrow-angle tailed radio galaxies and pulsar wind nebulae. We present a set of numerical simulations of this interaction that illuminate the long term dynamical evolution and the observational properties of these microquasar bow shock nebulae and trails. We find that this interaction always produces a structure that consists of a bow shock, a trailing neck, and an expanding bubble. Using our simulations to model emission, we predict that the shock surrounding the bubble and the neck should be visible in H{\alpha} emission, the interior of the bubble should be visible in synchrotron radio emission, and only the bow shock is likely to be detectable in X-ray emission. We construct an analytic model for the evolution of the neck and bubble shape and compare this model with observations of X-ray binary SAX J1712.6-3739.
  08/2011;
• Source

  Available from: arxiv.org

  Article: A dark jet dominates the power output of the stellar black hole Cygnus X-1.

  Elena Gallo, Rob Fender, Christian Kaiser, David Russell, Raffaella Morganti, Tom Oosterloo, Sebastian Heinz
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  ABSTRACT: Black holes undergoing accretion are thought to emit the bulk of their power in the X-ray band by releasing the gravitational potential energy of the infalling matter. At the same time, they are capable of producing highly collimated jets of energy and particles flowing out of the system with relativistic velocities. Here we show that the 10-solar-mass (10M(o)) black hole in the X-ray binary Cygnus X-1 (refs 3-5) is surrounded by a large-scale (approximately 5 pc in diameter) ring-like structure that appears to be inflated by the inner radio jet. We estimate that in order to sustain the observed emission of the ring, the jet of Cygnus X-1 has to carry a kinetic power that can be as high as the bolometric X-ray luminosity of the binary system. This result may imply that low-luminosity stellar-mass black holes as a whole dissipate the bulk of the liberated accretion power in the form of 'dark', radiatively inefficient relativistic outflows, rather than locally in the X-ray-emitting inflow.
  Nature 09/2005; 436(7052):819-21. · 36.28 Impact Factor
• Source

  Available from: mpg.de

  Article: Cosmic Ray Beschleunigung in Mikroquasaren

  Sebastian Heinz, Rashid Sunyaev
  Max-Planck-Gesellschaft, Max-Planck-Gesellschaft: Max-Planck-Gesellschaft - Jahrbuch 2003, 51-55 (2003).