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MHD Simulations of Relativistic Jets
Astrophysics and Space Science, 2004In a series of time dependent numerical simulations we have performed a parameter study of magnetised relativistic jets. We have found that the impact of the magnetic field on the morphology of a jet depends strongly on the configuration of the field.
Leismann, T., Aloy, M., Müller, E.
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Astrophysics and Space Science, 1994
Observations on parsec scales suggest that the flow in extra-galactic radio sources has both bulk and thermal Lorentz factors which are significantly greater than one. Using a simple transformation of variable, Chiu (1973) demonstrated that the dynamical equations for a relativistic, nondegenerate fluid (Synge (1957)), can be expressed in a form which ...
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Observations on parsec scales suggest that the flow in extra-galactic radio sources has both bulk and thermal Lorentz factors which are significantly greater than one. Using a simple transformation of variable, Chiu (1973) demonstrated that the dynamical equations for a relativistic, nondegenerate fluid (Synge (1957)), can be expressed in a form which ...
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Extragalactic relativistic jets
Proceedings of the International Astronomical Union, 2018AbstractRelativistic jets are one of the most powerful manifestations of the release of energy produced around supermassive black holes at the centre of active galactic nuclei (AGN). Their emission is observed across the entire electromagnetic spectrum, from the radio band to gamma rays.
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Science, 1982
A variety of recent optical, radio, and x-ray observations have confirmed the hypothesis that the peculiar star SS 433 is ejecting two narrow, opposed, highly collimated jets of matter at one-quarter the speed of light. This unique behavior is probably driven by mass exchange between a relatively normal star and a compact companion, either a neutron ...
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A variety of recent optical, radio, and x-ray observations have confirmed the hypothesis that the peculiar star SS 433 is ejecting two narrow, opposed, highly collimated jets of matter at one-quarter the speed of light. This unique behavior is probably driven by mass exchange between a relatively normal star and a compact companion, either a neutron ...
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Relativistic Jet Formation in Microquasars
Astrophysics and Space Science, 2001Microquasars produce collimated, relativistic flow at speeds up to a Lorentz factor of ∼ 3 (0.94c). It is generally believed that such flow velocities indicate that jet acceleration and collimation occurs in the relativistic environment of a supermassive black hole.
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New Astronomy Reviews, 1998
Abstract We discuss the structure and relativistic kinematics that develop in three spatial dimensions when a moderately hot, supersonic jet propagates into a denser background medium and encounters resistance from an oblique magnetic field. Our simulations incorporate relativistic MHD in a four-dimensional spacetime and clearly show that (a ...
K.-I. Nishikawa +6 more
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Abstract We discuss the structure and relativistic kinematics that develop in three spatial dimensions when a moderately hot, supersonic jet propagates into a denser background medium and encounters resistance from an oblique magnetic field. Our simulations incorporate relativistic MHD in a four-dimensional spacetime and clearly show that (a ...
K.-I. Nishikawa +6 more
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General Relativistic Magnetohydrodynamical Models of Relativistic Jets
AIP Conference Proceedings, 2007The general relativistic magnetohydrodynamical approximation is used to study plasma flows near rotating black holes and the formation of jets. The magnetized jet from the rotating black hole is found to be efficiently accelerated to Lorentz factors of Γ ≳ 10. The magnetized jet is collimated by the corona, which has a wind component that reaches Γ ≲ 3.
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Physics Bulletin, 1981
The star SS433 is a cosmic physics laboratory testing special relativity and the Doppler effect, not to mention the theory of supernovae and black holes.
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The star SS433 is a cosmic physics laboratory testing special relativity and the Doppler effect, not to mention the theory of supernovae and black holes.
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2014
Relativistic jets can be modeled as magnetohydrodynamic flows. We analyze the related equations and discuss the involved acceleration mechanisms, their relation to the collimation, to the jet confinement by its environment, and to possible rarefaction waves triggered by pressure imbalances.
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Relativistic jets can be modeled as magnetohydrodynamic flows. We analyze the related equations and discuss the involved acceleration mechanisms, their relation to the collimation, to the jet confinement by its environment, and to possible rarefaction waves triggered by pressure imbalances.
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Steady, Relativistic Magnetized Jet
1992The method of characteristics has been used to solve numerically the equations of steady special relativistic MHD flows. The authors show some preliminary results which investigate the effects of a dynamically important toroidal magnetic field on the propagation of weak pressure discontinuities.
DUBAL M. R., PANTANO, ORNELLA
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