Recollimation shocks in magnetized relativistic jets

We have performed two-dimensional special-relativistic magnetohydrodynamic simulations of non-equilibrium over-pressured relativistic jets in cylindrical geometry. Multiple stationary recollimation shock and rarefaction structures are produced along the jet by the nonlinear interaction of shocks and...

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Detalles Bibliográficos
Autores: Mizuno, Yosuke, Gómez Fernández, José L., Nishikawa, Ken-Ichi, Meli, Athina, Hardee, Philip E., Rezzolla, Luciano
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/135261
Acceso en línea:http://hdl.handle.net/10261/135261
Access Level:acceso abierto
Palabra clave:Shock waves
Methods: numerical
Magnetohydrodynamics (MHD)
Galaxies: jets
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spelling Recollimation shocks in magnetized relativistic jetsMizuno, YosukeGómez Fernández, José L.Nishikawa, Ken-IchiMeli, AthinaHardee, Philip E.Rezzolla, LucianoShock wavesMethods: numericalMagnetohydrodynamics (MHD)Galaxies: jetsWe have performed two-dimensional special-relativistic magnetohydrodynamic simulations of non-equilibrium over-pressured relativistic jets in cylindrical geometry. Multiple stationary recollimation shock and rarefaction structures are produced along the jet by the nonlinear interaction of shocks and rarefaction waves excited at the interface between the jet and the surrounding ambient medium. Although initially the jet is kinematically dominated, we have considered axial, toroidal, and helical magnetic fields to investigate the effects of different magnetic-field topologies and strengths on the recollimation structures. We find that an axial field introduces a larger effective gas pressure and leads to stronger recollimation shocks and rarefactions, resulting in larger flow variations. The jet boost grows quadratically with the initial magnetic field. On the other hand, a toroidal field leads to weaker recollimation shocks and rarefactions, significantly modifying the jet structure after the first recollimation rarefaction and shock. The jet boost decreases systematically. For a helical field, instead, the behavior depends on the magnetic pitch, with a phenomenology that ranges between the one seen for axial and toroidal magnetic fields, respectively. In general, however, a helical magnetic field yields a more complex shock and rarefaction substructure close to the inlet that significantly modifies the jet structure. The differences in shock structure resulting from different field configurations and strengths may have observable consequences for disturbances propagating through a stationary recollimation shock.Support comes 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 103-2112-M-007-023-MY3. J.L.G. acknowledges support from the Spanish Ministry of Economy and Competitiveness grant AYA2013-40825-P. K.N. and P.H. acknowledge support by NSF awards AST-0908010 and AST-0908040, and by NASA awards NNX09AD16G, NNX12AH06G, NNX13A P-21G, and NNX13AP14G. A.M. acknowledges support from the Scientific Research (FWO) and the Belgian Federal Science Policy Office (Belspo).Peer ReviewedInstitute of Physics PublishingBelgian Science Policy OfficeNASANational Science Foundation (US)European Research CouncilMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2016201620152016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/135261reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2013-40825-PSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1352612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Recollimation shocks in magnetized relativistic jets
title Recollimation shocks in magnetized relativistic jets
spellingShingle Recollimation shocks in magnetized relativistic jets
Mizuno, Yosuke
Shock waves
Methods: numerical
Magnetohydrodynamics (MHD)
Galaxies: jets
title_short Recollimation shocks in magnetized relativistic jets
title_full Recollimation shocks in magnetized relativistic jets
title_fullStr Recollimation shocks in magnetized relativistic jets
title_full_unstemmed Recollimation shocks in magnetized relativistic jets
title_sort Recollimation shocks in magnetized relativistic jets
dc.creator.none.fl_str_mv Mizuno, Yosuke
Gómez Fernández, José L.
Nishikawa, Ken-Ichi
Meli, Athina
Hardee, Philip E.
Rezzolla, Luciano
author Mizuno, Yosuke
author_facet Mizuno, Yosuke
Gómez Fernández, José L.
Nishikawa, Ken-Ichi
Meli, Athina
Hardee, Philip E.
Rezzolla, Luciano
author_role author
author2 Gómez Fernández, José L.
Nishikawa, Ken-Ichi
Meli, Athina
Hardee, Philip E.
Rezzolla, Luciano
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Belgian Science Policy Office
NASA
National Science Foundation (US)
European Research Council
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Shock waves
Methods: numerical
Magnetohydrodynamics (MHD)
Galaxies: jets
topic Shock waves
Methods: numerical
Magnetohydrodynamics (MHD)
Galaxies: jets
description We have performed two-dimensional special-relativistic magnetohydrodynamic simulations of non-equilibrium over-pressured relativistic jets in cylindrical geometry. Multiple stationary recollimation shock and rarefaction structures are produced along the jet by the nonlinear interaction of shocks and rarefaction waves excited at the interface between the jet and the surrounding ambient medium. Although initially the jet is kinematically dominated, we have considered axial, toroidal, and helical magnetic fields to investigate the effects of different magnetic-field topologies and strengths on the recollimation structures. We find that an axial field introduces a larger effective gas pressure and leads to stronger recollimation shocks and rarefactions, resulting in larger flow variations. The jet boost grows quadratically with the initial magnetic field. On the other hand, a toroidal field leads to weaker recollimation shocks and rarefactions, significantly modifying the jet structure after the first recollimation rarefaction and shock. The jet boost decreases systematically. For a helical field, instead, the behavior depends on the magnetic pitch, with a phenomenology that ranges between the one seen for axial and toroidal magnetic fields, respectively. In general, however, a helical magnetic field yields a more complex shock and rarefaction substructure close to the inlet that significantly modifies the jet structure. The differences in shock structure resulting from different field configurations and strengths may have observable consequences for disturbances propagating through a stationary recollimation shock.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/135261
url http://hdl.handle.net/10261/135261
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2013-40825-P
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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