Hydrodynamic simulation of two-component advective flows around black holes
نویسندگان
چکیده
منابع مشابه
Signatures of Accretion Shocks in Broadband Spectrum of Advective Flows Around Black Holes
We compute the effects of the centrifugal pressure supported shock waves on the emitted spectrum from an accretion disk primarily consisting of low angular momentum matter. Electrons are very efficiently accelerated by the accretion shock and acquire power-law distribution. The accelerated particles in turn emit synchrotron radiation in presence of a stochastic magnetic field in equipartition w...
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We show that the removal of angular momentum is possible in the presence of large scale magnetic stresses, arisen by fields much stronger than that required for magnetorotational instability, in geometrically thick, advective, sub-Keplerian accretion flows around black holes in steady-state, in the complete absence of alpha-viscosity. The efficiency of such angular momentum transfer via Maxwell...
متن کاملAdvection dominated flows around black holes in two dimensions
Abstract. We show the results of two–dimensional, azimuthally symmetric simulations of advection dominated fluid flows around black holes. We use the SPH method, and the α–prescription for the viscosity, including all terms in the stress tensor. We have performed calculations with 0.001 < α < 0.2 and find strong circulation patterns in the flow, on spatial scales that depend on the magnitude of...
متن کاملNucleosynthesis in Accretion Flows Around Black Holes
Significant nucleosynthesis is possible in the centrifugal pressure-supported dense and hot region of the accretion flows which deviate from Keplerian disks around black holes. We compute composition changes and energy generations due to such nuclear processes. We use a network containing 255 species and follow the changes in composition. Highly viscous, high-accretion-rate flows deviate from a...
متن کاملSignatures of accretion shocks in emitted radiation from a two temperature advective flow around black holes
Centrifugal barrier supported boundary layer (CENBOL) of a black hole affects the spectrum exactly in the same way the boundary layer of a neutron star does. The CENBOL is produced due to standing or oscillating shock waves and these shocks accelerate electrons very efficiently and produce a powerlaw distribution. The accelerated particles in turn emit synchrotron radiation in presence of the m...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2013
ISSN: 1365-2966,0035-8711
DOI: 10.1093/mnras/stt087