JET FORMATION IN GRBs: A SEMI-ANALYTIC MODEL OF MHD FLOW IN KERR GEOMETRY WITH REALISTIC PLASMA INJECTION

@article{Globus2014JETFI,
  title={JET FORMATION IN GRBs: A SEMI-ANALYTIC MODEL OF MHD FLOW IN KERR GEOMETRY WITH REALISTIC PLASMA INJECTION},
  author={No{\'e}mie Globus and Amir Levinson},
  journal={The Astrophysical Journal},
  year={2014},
  volume={796},
  pages={26}
}
We construct a semi-analytic model for magnetohydrodynamic (MHD) flows in Kerr geometry that incorporates energy loading via neutrino annihilation on magnetic field lines threading the horizon. We compute the structure of the double-flow established in the magnetisphere for a wide range of energy injection rates and identify the different operation regimes. At low injection rates, the outflow is powered by the spinning black hole via the Blandford-Znajek mechanism, whereas at high injection… 
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References

SHOWING 1-10 OF 22 REFERENCES
Magnetohydrodynamic flows in Kerr geometry : energy extraction from black holes
This paper studies steady axisymmetric flows of a relativistic ideal magnetohydrodynamical (MHD) fluid in the magnetosphere of a Kerr black hole. It is assumed that an inward flow due to the strong…
Loaded magnetohydrodynamic flows in Kerr spacetime
The effect of mass and energy loading on the efficiency at which energy can be extracted magnetically from a Kerr black hole is explored, using a semi-analytic, ideal MHD model that incorporates…
Ultra-relativistic, neutrino driven flows in GRBs: A double transonic flow solution in Schwarzschild spacetime
The structure of a hydrodynamic, double transonic flow driven by neutrino annihilation in the polar region of a Schwarzschild black hole is computed for different energy deposition profiles. The…
General Relativistic, Neutrino-Assisted MHD winds - Theory and Application to GRBs. I. Schwarzschild Geometry
(short version) - A model for GRMHD disk outflows with neutrino-driven mass ejection is developed,and employed to calculate the structure of the outflow in the sub-slow magnetosonic region and the…
Activation of the Blandford–Znajek mechanism in collapsing stars
The collapse of massive stars may result in the formation of accreting black holes in their interiors. The accreting stellar matter may advect substantial magnetic flux on to the black hole and…
THEORY AND ASTROPHYSICAL CONSEQUENCES OF A MAGNETIZED TORUS AROUND A RAPIDLY ROTATING BLACK HOLE
We analyze the topology, lifetime, and emissions of a torus around a black hole formed in hypernovae and black hole-neutron star coalescence. The torus is ab initio uniformly magnetized, represented…
Neutrino pair annihilation near accreting, stellar-mass black holes
Context. We investigate the deposition of energy and momentum due to the annihilation of neutrinos (�) and antineutrinos (¯�) in the vicinity of steady, axisymmetric accretion tori around…
ASYMPTOTIC STRUCTURE OF POYNTING-DOMINATED JETS
In relativistic, Poynting-dominated outflows, acceleration and collimation are intimately connected. An important point is that the Lorentz force is nearly compensated by the electric force;…
General relativistic magnetohydrodynamic simulations of monopole magnetospheres of black holes
ABSTRACT In this paper we report the results of the first ever time-dependent general rela-tivistic magnetohydrodynamic simulations of the magnetically dominated monopolemagnetospheres of black holes.…
Hyper- and Suspended-Accretion States of Rotating Black Holes and the Durations of Gamma-Ray Bursts
We analyze the temporal evolution of accretion onto rotating black holes subject to large-scale magnetic torques. Wind torques alone drive a disk toward collapse in a finite time ~tffEk/EB, where tff…
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