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We present the first three-dimensional MHD radio galaxy simulations that explicitly model transport of relativistic electrons, including diffusive acceleration at shocks as well as radiative and adiabatic cooling in smooth flows. We discuss…

Astrophysics · Physics 2009-11-06 I. L. Tregillis , T. W. Jones , Dongsu Ryu

We study the conditions under which high mode magnetohydrodynamic (MHD) waves propagating on a rotating jet emerging from the filament eruption on 2013 April 10--11 can became unstable against the Kelvin--Helmholtz instability (KHI). The…

Solar and Stellar Astrophysics · Physics 2018-06-06 Ivan Zhelyazkov , Ramesh Chandra

Using high resolution adaptive mesh refinement simulations in 3D, we investigate the formation of relativistic jets from rotating magnetospheres. Here, we focus on the development of non-axisymmetric modes due to internal and external…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Oliver Porth

In this work, we simulate $\gamma$-rays created in the hadronic jets of the compact object in binary stellar systems known as microquasars. We utilize as main computational tool the $3$-D relativistic magneto-hydro-dynamical code PLUTO…

High Energy Astrophysical Phenomena · Physics 2018-08-02 Odysseas Kosmas , Theodoros Smponias

We present two-temperature, radiative general relativistic magnetohydrodynamic simulations of Magnetically Arrested Discs (MAD) that launch powerful relativistic jets. The mass accretion rates of our simulations are scaled to match the…

High Energy Astrophysical Phenomena · Physics 2019-04-11 Andrew Chael , Ramesh Narayan , Michael D. Johnson

Outflows driven by large-scale magnetic fields likely play an important role in the evolution and dispersal of protoplanetary disks, and in setting the conditions for planet formation. We extend our 2-D axisymmetric non-ideal MHD model of…

Earth and Planetary Astrophysics · Physics 2020-07-01 Oliver Gressel , Jon P. Ramsey , Christian Brinch , Richard P. Nelson , Neal J. Turner , Simon Bruderer

Two three-dimensional magnetohydrodynamical simulations of strongly magnetized conical jets, one with a poloidal and one with a helical magnetic field, have been performed. In the poloidal simulation a significant sheath (wind) of…

Astrophysics · Physics 2009-11-07 Philip Hardee , Alexander Rosen

We present results of a series of magnetohydrodynamic (MHD) and hydro- dynamic (HD) 2.5D simulations of the morphology of outflows driven by nested wide-angle winds - i.e. winds which eminate from a central star as well as from an orbiting…

Solar and Stellar Astrophysics · Physics 2014-11-20 Timothy J. Dennis , Adam Frank , Eric G. Blackman , Orsola DeMarco , Bruce Balick , Sorin Mitran

We present the results of large scale, three-dimensional magneto-hydrodynamics simulations of disc-winds for different initial magnetic field configurations. The jets are followed from the source to 90 AU scale, which covers several pixels…

Solar and Stellar Astrophysics · Physics 2015-06-23 Jan Staff , Nico Koning , Rachid Ouyed , Adam Thompson , Ralph Pudritz

We discuss recent progress in understanding the launching of outflows/jets from the disc-magnetosphere boundary of slowly and rapidly rotating magnetized stars. In most of the discussed models the interior of the disc is assumed to have a…

Solar and Stellar Astrophysics · Physics 2013-06-06 R. V. E. Lovelace , M. M. Romanova , P. Lii

The transport of angular momentum by magnetic fields is a crucial physical process in formation and evolution of stars and disks. Because the ionization degree in star forming clouds is extremely low, non-ideal magnetohydrodynamic (MHD)…

Solar and Stellar Astrophysics · Physics 2015-06-23 Kengo Tomida , Satoshi Okuzumi , Masahiro N. Machida

We have performed magneto-hydrodynamic simulations of relativistic jets from supermassive blackholes over a few tens of kpc for a range of jet parameters. One of the primary aims were to investigate the effect of different MHD instabilities…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Dipanjan Mukherjee , Gianluigi Bodo , Andrea Mignone , Paola Rossi , Bhargav Vaidya

Several MHD works and, in particular, the recent one by Medina-Torrejon et al. (2021) based on three-dimensional MHD simulations of relativistic jets, have evidenced that particle acceleration by magnetic reconnection driven by the…

High Energy Astrophysical Phenomena · Physics 2023-08-02 Tania E. Medina-Torrejón , Elisabete M. de Gouveia Dal Pino , Grzegorz Kowal

Numerous numerical studies have been carried out in recent years that simulate different aspects of exoplanets' magnetosphere and stellar winds. These studies have focused primarily on hot Jupiters with sun-like stars. This study addresses…

Earth and Planetary Astrophysics · Physics 2024-04-23 Fatemeh Bagheri , Ramon E. Lopez , Kevin Pham

The merger of two neutron stars (NSs) produces the emission of gravitational waves, the formation of a compact object surrounded by a dense and magnetized environment, and the launching of a collimated and relativistic jet, which will…

High Energy Astrophysical Phenomena · Physics 2023-01-18 Leonardo Garcia-Garcia , Diego Lopez-Camara , Davide Lazzati

This work describes a laboratory plasma experiment and initial results which should give insight into the magnetic dynamics of accretion discs and jets. A high-speed multiple-frame CCD camera reveals images of the formation and helical…

Astrophysics · Physics 2009-11-07 S. C. Hsu , P. M. Bellan

Aims. The main goal of the present paper is to provide the first systematic numerical study of the propagation of astrophysical relativistic jets, in the context of high-resolution shock-capturing resistive relativistic magnetohydrodynamics…

High Energy Astrophysical Phenomena · Physics 2023-11-03 Giancarlo Mattia , Luca Del Zanna , Matteo Bugli , Andrea Pavan , Riccardo Ciolfi , Gianluigi Bodo , Andrea Mignone

We study the emergence of a toroidal flux tube into the solar atmosphere and its interaction with a pre-existing field of an active region. We investigate the emission of jets as a result of repeated reconnection events between colliding…

Solar and Stellar Astrophysics · Physics 2010-03-12 V. Archontis , K. Tsinganos , C. Gontikakis

We present fully three-dimensional hydrodynamical and magnetohydrodynamical simulations of supersonic, radiative cooling jets propagating into homogeneous and stratified environments based on Smoothed Particle Hydrodynamics technique.

Astrophysics · Physics 2007-05-23 E. M. Gouveia Dal Pino , A. H. Cerqueira

Relativistic jets are collimated plasma outflows with relativistic speeds. Astrophysical objects involving relativistic jets are a system comprising a compact object such as a black hole, surrounded by rotating accretion flows, with the…

High Energy Astrophysical Phenomena · Physics 2022-02-01 Yosuke Mizuno