Numerical models of force-free black-hole magnetospheres
نویسندگان
چکیده
منابع مشابه
The Origins of Causality Violations In Force-Free Simulations of Black Hole Magnetospheres
Recent simulations of force-free, degenerate (ffde) black hole magnetospheres indicate that the fast mode radiated from (or near) the event horizon can modify the global potential difference in the poloidal direction orthogonal to the magnetic field, V, in a black hole magnetosphere. By contrast in MHD (meaning perfect magnetohydrodynamics, hereafter), a combination of Alfven and fast waves are...
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The force-free limit of magnetohydrodynamics (MHD) is often a reasonable approximation to model black hole and neutron star magnetospheres. We describe a general relativistic force-free (GRFFE) formulation that allows general relativistic magnetohydrodynamic (GRMHD) codes to directly evolve the GRFFE equations of motion. Established, accurate, and well-tested conservative GRMHD codes can simply...
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The rotational energy of a Kerr black hole is often invoked as the free energy source that powers compact astrophysical systems. An important question concerning the energy extraction mechanism is whether a Kerr black hole can communicate stresses to a distant load via a surrounding, force-free magnetosphere, and whether such structures are stable. In this paper we address this question. We fir...
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Black hole accretion flows are the hot, magnetized, turbulent plasma that surround black holes in astrophysical settings and in some cases make them the most luminous objects in the universe. I review recent developments in the numerical modeling of these plasmas. For weakly radiating flows it is now possible to follow the dynamics of the plasma by integrating the equations of general relativis...
متن کاملThe structure of black hole magnetospheres . I . Schwarzschild black holes
We introduce a multipolar scheme for describing the structure of stationary, axisymmetric, force-free black-hole magnetospheres in the “3+1” formalism. In this work, we focus on Schwarzschild spacetime, giving a complete characterization of separable solutions of the stream equation in terms of well-known functions. We demonstrate a term-by-term analogy of our solutions with the familiar multip...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1984
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/211.2.313