Microscopic processes in global relativistic jets containing helical magnetic fields: dependence on jet radius

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dc.contributor.author Nishikawa, Ken-Ichi
dc.contributor.author Mizuno, Yosuke
dc.contributor.author Gómez, Jose L.
dc.contributor.author Duţan, Ioana
dc.contributor.author Meli, Athina
dc.contributor.author White, Charley
dc.contributor.author Niemiec, Jacek
dc.contributor.author Kobzar, Oleh
dc.contributor.author Pohl, Martin
dc.contributor.author Pe'er, Asaf
dc.contributor.author Frederiksen, Jacob Trier
dc.contributor.author Nordlund, Åke
dc.contributor.author Sol, Helene
dc.contributor.author Hardee, Philip E.
dc.contributor.author Hartmann, Dieter H.
dc.date.accessioned 2018-06-15T11:47:16Z
dc.date.available 2018-06-15T11:47:16Z
dc.date.issued 2017
dc.identifier.citation Nishikawa, K.-I., Mizuno, Y., Gómez, J., Duţan, I., Meli, A., White, C., Niemiec, J., Kobzar, O., Pohl, M., Pe’er, A., Frederiksen, J., Nordlund, Å., Sol, H., Hardee, P. and Hartmann, D. (2017) 'Microscopic processes in global relativistic jets containing helical magnetic fields: dependence on jet radius', Galaxies, 5(4), 58 (7pp). doi: 10.3390/galaxies5040058 en
dc.identifier.volume 5
dc.identifier.issued 4
dc.identifier.startpage 1
dc.identifier.endpage 7
dc.identifier.issn 2075-4434
dc.identifier.uri http://hdl.handle.net/10468/6345
dc.identifier.doi 10.3390/galaxies5040058
dc.description.abstract In this study, we investigate the interaction of jets with their environment at a microscopic level, which is a key open question in the study of relativistic jets. Using small simulation systems during past research, we initially studied the evolution of both electron-proton and electron-positron relativistic jets containing helical magnetic fields, by focusing on their interactions with an ambient plasma. Here, using larger jet radii, we have performed simulations of global jets containing helical magnetic fields in order to examine how helical magnetic fields affect kinetic instabilities, such as the Weibel instability, the kinetic Kelvin-Helmholtz instability (kKHI) and the mushroom instability (MI). We found that the evolution of global jets strongly depends on the size of the jet radius. For example, phase bunching of jet electrons, in particular in the electron-proton jet, is mixed with a larger jet radius as a result of the more complicated structures of magnetic fields with excited kinetic instabilities. In our simulation, these kinetic instabilities led to new types of instabilities in global jets. In the electron-proton jet simulation, a modified recollimation occurred, and jet electrons were strongly perturbed. In the electron-positron jet simulation, mixed kinetic instabilities occurred early, followed by a turbulence-like structure. Simulations using much larger (and longer) systems are required in order to further thoroughly investigate the evolution of global jets containing helical magnetic fields. en
dc.description.sponsorship National Science Foundation (AST-0908010, AST-0908040; NASA-NNX09AD16G; NNX12AH06G; NNX13AP-21G; NNX13AP14G; PHY05-51164); Deutsche Forschungsgemeinschaft (PO 1508/1-2) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher MDPI AG en
dc.relation.uri http://www.mdpi.com/2075-4434/5/4/58
dc.rights © 2018, the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). en
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.subject Relativistic jets en
dc.subject Particle-in-cell simulations en
dc.subject Global jets en
dc.subject Helical magnetic fields en
dc.subject Kinetic instabilities en
dc.subject Kink-like instability en
dc.subject Recollimation shocks en
dc.subject Polarized radiation en
dc.title Microscopic processes in global relativistic jets containing helical magnetic fields: dependence on jet radius en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Asaf Pe’er, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: a.peer@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Seventh Framework Programme
dc.contributor.funder Narodowe Centrum Nauki
dc.contributor.funder Deutsche Forschungsgemeinschaft
dc.contributor.funder European Research Council
dc.contributor.funder National Science Foundation
dc.description.status Peer reviewed
dc.identifier.journaltitle Galaxies en
dc.internal.IRISemailaddress a.peer@ucc.ie en
dc.identifier.articleid 58
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP2::ERC/610058/EU/Imaging the Event Horizon of Black Holes/BLACKHOLECAM


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© 2018, the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Except where otherwise noted, this item's license is described as © 2018, the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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