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We introduce a simple and economical but effective method for including relativistic electron transport in multi-dimensional simulations of radio galaxies. The method is designed to follow explicitly diffusive acceleration at shocks, and,…

Astrophysics · Physics 2009-10-30 T. W. Jones , Dongsu Ryu , Andrew Engel

We report on an effort to study the connections between dynamics in simulated radio galaxy plasma flows and the properties of nonthermal electron populations carried in those flows. To do this we have introduced a new numerical scheme for…

Astrophysics · Physics 2007-05-23 T. W. Jones , I. L. Tregillis , Dongsu Ryu

We have developed an economical, effective numerical scheme for cosmic-ray transport suitable for treatment of electrons up to a few hundreds of GeV in multidimensional simulations of radio galaxies. The method follows the electron…

Astrophysics · Physics 2009-10-31 T. W. Jones , I. L. Tregillis , Dongsu Ryu

We perform a series of so-called ``synthetic observations'' on a set of 3D MHD jet simulations which explicitly include energy-dependent transport of relativistic electrons, as described in the companion paper by Jones, Tregillis, & Ryu.…

Astrophysics · Physics 2007-05-23 I. L. Tregillis , T. W. Jones , Dongsu Ryu

We have applied an effective numerical scheme for cosmic-ray transport to 3D MHD simulations of jet flow in radio galaxies (see the companion paper by Jones et al. 1999). The marriage of relativistic particle and 3D magnetic field…

Astrophysics · Physics 2009-10-31 I. L. Tregillis , T. W. Jones , Dongsu Ryu , Charles Park

We present a set of high-resolution 3D MHD simulations of steady light, supersonic jets, exploring the influence of jet Mach number and the ambient medium on jet propagation and energy deposition over long distances. The results are…

Astrophysics · Physics 2009-11-13 S. M. O'Neill , I. L. Tregillis , T. W. Jones , Dongsu Ryu

Active galactic nucleus (AGN) powered jets can accelerate cosmic ray electrons, leading to the observed radio synchrotron emission. To simulate this emission, jet dynamics in galaxy clusters must be coupled to electron spectral modelling.…

Astrophysics of Galaxies · Physics 2026-01-19 Léna Jlassi , Rainer Weinberger , Christoph Pfrommer , Maria Werhahn , Joseph Whittingham , Philipp Girichidis

The class of Double-Double Radio Galaxies (DDRGs) relates to episodic jet outbursts. How various regions and components add to the total intensity in radio images is less well known. In this paper we synthesize synchrotron images for DDRGs…

High Energy Astrophysical Phenomena · Physics 2020-07-30 S. Walg , A. Achterberg , S. Markoff , R. Keppens , O. Porth

We present fully three-dimensional hydrodynamical simulations of radiative cooling jets propagating into stratified isothermal ambient media with power-law density and pressure distributions. The parameters used are mainly suitable for…

Astrophysics · Physics 2009-10-28 Elisabete M. de Gouveia Dal Pino , Mark Birkinshaw

Context. Relativistic jets in active galactic nuclei are known for their exceptional energy output, and imaging the synthetic synchrotron emission of numerical jet simulations is essential for a comparison with observed jet polarization…

High Energy Astrophysical Phenomena · Physics 2024-09-11 Joana A. Kramer , Nicholas R. MacDonald , Georgios F. Paraschos , L. Ricci

{We simulate the evolution of relativistic electrons injected into the intracluster medium by five radio galaxies. We study the spatial transport and the emission properties of the injected radio plasma over a $\sim 5$ Gyr period, and the…

High Energy Astrophysical Phenomena · Physics 2023-03-10 F. Vazza , D. Wittor , M. Brueggen , G. Brunetti

We report a 3D MHD simulation study of the interactions between radio galaxies and galaxy-cluster-media shocks in which the incident shock normals are orthogonal to the bipolar AGN jets. Before shock impact, light, supersonic jets inflate…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Chris Nolting , T. W. Jones , Brian O'Neill , P. J. Mendygral

The energetic electromagnetic eruptions observed during the prompt phase of gamma-ray bursts are attributed to synchrotron emissions. The internal shocks moving through the ultrarelativistic jet, which is ejected by an imploding…

High Energy Astrophysical Phenomena · Physics 2010-11-22 Gareth C. Murphy , Mark E. Dieckmann , Luke O'C Drury

Synchrotron radiation is commonly observed in connection with shocks of different velocities, ranging from relativistic shocks associated with active galactic nuclei, gamma-ray bursts or microquasars to weakly- or non-relativistic flows as…

A new scenario for the interaction of a jet with a background medium with cold clouds is investigated by means of hydrodynamic turbulence simulations with cooling. The idea is that the cold clouds are overtaken by a radio cocoon and stirred…

Astrophysics · Physics 2008-11-26 Martin Krause

In spite of a large number of global three-dimensional (3D) magneto-hydrodynamical (MHD) simulations of accretion flows and jets being made recently, their astrophysical relevance for realistic situations is not well known. In order to…

Astrophysics · Physics 2009-11-10 K. Ohsuga , Y. Kato , S. Mineshige

We present a large systematic study of hydrodynamic simulations of supersonic adiabatic jets in three dimensions to provide a definitive set of results on exploring jet density, Mach number and precession angle as variables. We restrict the…

Astrophysics of Galaxies · Physics 2016-02-17 Justin Donohoe , Michael D. Smith

We present magnetohydrodynamic simulations of a jet-wind interaction in a galaxy cluster and the radio to gamma-ray and the neutrino emissions from this "head-tail galaxy". Our simulation follows the evolution of cosmic-ray (CR) particle…

High Energy Astrophysical Phenomena · Physics 2023-07-12 Takumi Ohmura , Katsuaki Asano , Kosuke Nishiwaki , Mami Machida , Haruka Sakemi

We computed the thermal microwave emission from a 3D magnetohydrodynamic (MHD) simulation and compared it with observations of solar jets. The simulation treats the emergence of magnetic flux into the solar atmosphere and its interaction…

Solar and Stellar Astrophysics · Physics 2025-07-23 Costas E. Alissandrakis , Vasilis Archontis , Kostas Moraitis

We present two-dimensional MHD simulations of the evolution of a young Type Ia supernova remnant during its interaction with an interstellar cloud of comparable size at impact. We include for the first time in such simulations explicit…

Astrophysics · Physics 2009-10-30 Byung-Il Jun , T. W. Jones
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