Effect of interacting rarefaction waves on relativistically hot jets
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In this article, the effect of rarefaction acceleration on the propagation dynamics and structure of relativistically hot jets is studied through relativistic hydrodynamic simulations, and it is shown that a decrease in the relativism due to the interacting rare faction waves in the central zone of the jet transiently yields a more powerful boost of the bulk jet than that expected from single rare fraction acceleration.Abstract:
The effect of rarefaction acceleration on the propagation dynamics and structure of relativistically hot jets is studied through relativistic hydrodynamic simulations. We emphasize the nonlinear interaction of rarefaction waves excited at the interface between a cylindrical jet and the surrounding medium. From simplified one-dimensional (1D) models with radial jet structure, we find that a decrease in the relativistic pressure due to the interacting rarefaction waves in the central zone of the jet transiently yields a more powerful boost of the bulk jet than that expected from single rarefaction acceleration. This leads to a cyclic in situ energy conversion between thermal and bulk kinetic energies, which induces radial oscillating motion of the jet. The oscillation timescale is characterized by the initial pressure ratio of the jet to the ambient medium and follows a simple scaling relation, τoscillation(P jet, 0/P amb, 0)1/2. Extended two-dimensional simulations confirm that this radial oscillating motion in the 1D system manifests as modulation of the structure of the jet in a more realistic situation where a relativistically hot jet propagates through an ambient medium. We find that when the ambient medium has a power-law pressure distribution, the size of the reconfinement region along the propagation direction of the jet in the modulation structure λ evolves according to a self-similar relation λt α/2, where α is the power-law index of the pressure distribution.read more
Citations
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HIGH-SENSITIVITY 86 GHz (3.5 mm) VLBI OBSERVATIONS OF M87: DEEP IMAGING OF THE JET BASE AT A RESOLUTION OF 10 SCHWARZSCHILD RADII
Kazuhiro Hada,Motoki Kino,Akihiro Doi,Hiroshi Nagai,Mareki Honma,Kazunori Akiyama,Fumie Tazaki,Rocco Lico,Rocco Lico,Marcello Giroletti,Gabriele Giovannini,Gabriele Giovannini,Monica Orienti,Yoshiaki Hagiwara +13 more
Journal ArticleDOI
High-Sensitivity 86GHz (3.5mm) VLBI Observations of M87: Deep Imaging of the Jet Base at a 10 Schwarzschild-Radius Resolution
Kazuhiro Hada,Motoki Kino,Akihiro Doi,Hiroshi Nagai,Mareki Honma,Kazunori Akiyama,Fumie Tazaki,Rocco Lico,Marcello Giroletti,Gabriele Giovannini,Monica Orienti,Yoshiaki Hagiwara +11 more
TL;DR: In this paper, high-sensitivity, high-resolution 86GHz (3.5 millimeter) observations of the jet base in the nearby radio galaxy M87 were obtained by the Very Long Baseline Array in conjunction with the Green Bank Telescope.
Journal ArticleDOI
Grid-based Methods in Relativistic Hydrodynamics and Magnetohydrodynamics
José María Martí,Ewald Müller +1 more
TL;DR: An overview of grid-based numerical methods used in relativistic hydrodynamics (RHD) and magnetohydrodynamICS (RMHD) is presented and FORTRAN programs are provided to compute the exact solution of the Riemann problem in RMHD and to simulate 1D RMHD flows in Cartesian coordinates.
Journal ArticleDOI
Recollimation Shocks in Magnetized Relativistic Jets
Yosuke Mizuno,Yosuke Mizuno,José L. Gómez,Ken-Ichi Nishikawa,A. Meli,Philip E. Hardee,Luciano Rezzolla,Luciano Rezzolla +7 more
TL;DR: In this paper, the ERC Synergy Grant >BlackHoleCam-Imaging the Event Horizon of Black Holes> (Grant 610058) and from the Ministry of Science and Technology of Taiwan under the grant NSC 100-2112-M-007-022-MY3 and MOST 103-21 12-M.007-023-my3.
Journal ArticleDOI
Two-dimensional numerical study for rayleigh-taylor and richtmyer-meshkov instabilities in relativistic jets
Jin Matsumoto,Youhei Masada +1 more
TL;DR: In this paper, the stability of a single component single-component jet is studied using two-dimensional special relativistic hydrodynamic simulations, where the authors assume translational invariance along the jet axis and exclude the destabilization effect by Kelvin-Helmholtz mode.
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