English
Related papers

Related papers: Jet rotation driven by MHD shocks in helical magne…

200 papers

A set of 3D MHD simulations of magnetized jets has been performed. The jets contain an equipartition primarily poloidal magnetic field and the effect of jet density on jet dynamics and structure is evaluated. The jet is precessed at the…

Astrophysics · Physics 2009-10-30 P. E. Hardee , D. A. Clarke , A. Rosen

We present equilibrium models of relativistic magnetised, infinite, axisymmetric jets with rotation propagating through an homogeneous, unmagnetised ambient medium at rest. The jet models are characterised by six functions defining the…

Instrumentation and Methods for Astrophysics · Physics 2015-09-16 José-María Martí

We present an analytical model for describing highly relativistic acceleration of magnetically driven jets, within the framework of ideal MHD for cold, stationary and axisymmetric outflows. Our novel procedure is to treat the wind equation…

Astrophysics · Physics 2016-08-30 Akira Tomimatsu , Masaaki Takahashi

We describe a new paradigm for understanding both relativistic motions and particle acceleration in the M87 jet: a magnetically dominated relativistic flow that naturally produces four relativistic magnetohydrodynamic (MHD) shocks…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Masanori Nakamura , David L. Meier

We performed relativistic magnetohydrodynamic simulations of the hydrodynamic boosting mechanism for relativistic jets explored by Aloy & Rezzolla (2006) using the RAISHIN code. Simulation results show that the presence of a magnetic field…

Astrophysics · Physics 2009-06-23 Yosuke Mizuno , Philip Hardee , Dieter H. Hartmann , Ken-Ichi Nishikawa , Bing Zhang

Extragalactic relativistic jets are composed by charged particles and magnetic fields, as inferred from the synchrotron emission that we receive from them. The Larmor radii of the particles propagating along the magnetic field are much…

High Energy Astrophysical Phenomena · Physics 2017-08-07 Manel Perucho , José María Martí , José Luís Gómez , Antonio Fuentes

Relativistic magnetized jets are key elements in Active Galactic Nuclei and in other astrophysical environments. Their structure and evolution involves a complex nonlinear physics that can be approached by numerical studies only. Still,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 A. Mignone , P. Rossi , G. Bodo , A. Ferrari , S. Massaglia

We have proposed a viscoelastic model of the Maxwell stresses due to the disorganized magnetic field in MRI-driven MHD turbulence. Viscoelastic fluids in the laboratory are known to produce jet-like structures under the action of a rotating…

Astrophysics · Physics 2007-05-23 Peter T. Williams

Rotating magnetized compact objects and their accretion discs can generate strong toroidal magnetic fields driving highly magnetized plasmas into relativistic jets. Of significant concern, however, has been that a strong toroidal field in…

Astrophysics · Physics 2009-11-13 Jonathan C. McKinney , Roger D. Blandford

In this study we investigate jet interaction at a microscopic level in a cosmological environment, which responds to a key open question in the study of relativistic jets. Using small simulation systems during prior research, we initially…

Magnetic fields, which are undoubtedly present in extragalactic jets and responsible for the observed synchrotron radiation, can affect the morphology and dynamics of the jets and their interaction with the ambient cluster medium. We…

High Energy Astrophysical Phenomena · Physics 2012-09-13 V. Gaibler , M. Krause , M. Camenzind

Magnetic fields are believed to play an essential role in astrophysical jets with observations suggesting the presence of helical magnetic fields. Here, we present three-dimensional (3D) ideal MHD simulationsof the Caltech plasma jet…

High Energy Astrophysical Phenomena · Physics 2014-11-07 Xiang Zhai , Hui Li , Paul M. Bellan , Shengtai Li

Astrophysical jets are launched from strongly magnetized systems that host an accretion disk surrounding a central object. The origin of the jet launching magnetic field is one of the open questions for modeling the accretion-ejection…

High Energy Astrophysical Phenomena · Physics 2020-09-07 Giancarlo Mattia , Christian Fendt

Highly collimated outflows (jets) are observed across a wide range of astrophysical systems involving the accretion of material onto central objects, from supermassive black holes in active galaxies to proto-brown dwarfs and stellar-mass…

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

Jets are dynamic, impulsive, well-collimated plasma events that develop at many different scales and in different layers of the solar atmosphere. Jets are believed to be induced by magnetic reconnection, a process central to many…

Solar and Stellar Astrophysics · Physics 2016-11-30 E. Pariat , K. Dalmasse , C. R. DeVore , S. K. Antiochos , J. T. Karpen

In the study of relativistic jets one of the key open questions is their interaction with the environment on the microscopic level. Here, we study the initial evolution of both electron$-$proton ($e^{-}-p^{+}$) and electron$-$positron…

Recent observations of astrophysical jets emanating from various galactic nuclei strongly suggest that a double layered structure, or a spine-sheath structure, is likely to be their common feature. We propose that such a sheath jet…

Astrophysics of Galaxies · Physics 2015-05-13 Osamu Kaburaki

We present the results of a series of axisymmetric time-dependent magnetohydrodynamic (MHD) simulations of the propagation of cooling, overdense jets, motivated by the properties of outflows associated with young stellar objects. A variety…

Astrophysics · Physics 2009-10-31 James M. Stone , Philip E. Hardee

We present multi-dimensional simulations of magnetized radiative jets appropriate to Young Stellar Objects. Magnetized jets subject to collisionally excited radiative losses have not, as yet, received extensive scrutiny. The purpose of this…

Astrophysics · Physics 2009-10-30 A. Frank , D. Ryu , T. W. Jones , A. Noriega-Crespo