Komissarov, SS, Porth, O and Lyutikov, M (2015) Stationary relativistic jets. Computational Astrophysics and Cosmology, 2 (1).
Abstract
In this paper we describe a simple numerical approach which allows to study the structure of steady-state axisymmetric relativistic jets using one-dimensional time-dependent simulations. It is based on the fact that for narrow jets with vz≈cvz≈c the steady-state equations of relativistic magnetohydrodynamics can be accurately approximated by the one-dimensional time-dependent equations after the substitution z=ctz=ct. Since only the time-dependent codes are now publicly available this is a valuable and efficient alternative to the development of a high-specialised code for the time-independent equations. The approach is also much cheaper and more robust compared to the relaxation method. We tested this technique against numerical and analytical solutions found in literature as well as solutions we obtained using the relaxation method and found it sufficiently accurate. In the process, we discovered the reason for the failure of the self-similar analytical model of the jet reconfinement in relatively flat atmospheres and elucidated the nature of radial oscillations of steady-state jets.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2015 Komissarov et al. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | jets; relativity; magnetic fields; hydrodynamics; numerical methods |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Funding Information: | Funder Grant number Science & Technology Facilities Council(STFC) ST/K000853/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 May 2016 10:30 |
Last Modified: | 11 Apr 2018 13:26 |
Published Version: | http://dx.doi.org/10.1186/s40668-015-0013-y |
Status: | Published |
Publisher: | SpringerOpen |
Identification Number: | 10.1186/s40668-015-0013-y |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:97630 |