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3D PIC Simulations for Relativistic Jets with a Toroidal Magnetic Field

Published online by Cambridge University Press:  11 September 2023

Kenichi Nishikawa Open the ORCID record for Kenichi Nishikawa [Opens in a new window] ,
Athina Meli ,
Christoph Köhn ,
Ioana Duţan ,
Yosuke Mizuno ,
Oleh Kobzar ,
Nicholas MacDonald ,
José L. Gómez  and
Kouichi Hirotani
Kenichi Nishikawa
Affiliation:
Alabama A&M University
Athina Meli
Affiliation:
North Carolina A&T State University Institute Universite de Liege
Christoph Köhn
Affiliation:
Technical University of Denmark
Ioana Duţan
Affiliation:
Institute of Space Science
Yosuke Mizuno
Affiliation:
Shanghai Jiao Tong University Goethe University
Oleh Kobzar
Affiliation:
Astronomical Observatory of the Jagiellonian University Cracow University of Technology
Nicholas MacDonald
Affiliation:
Max-Planck-Institut für Radioastronomie
José L. Gómez
Affiliation:
Instituto de Astrofísica de Andalucía
Kouichi Hirotani
Affiliation:
Taiwan Institute of Astronomy and Astrophysics, Academia Sinica
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Abstract

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Particle-in-Cell simulations can provide a possible answer to an important key issue for astrophysical plasma jets; namely on how a toroidal magnetic field affects the evolution of pair and electron-ion jets. We show that Weibel, mushroom, and kinetic Kelvin-Helmhotz instabilities excited at the linear stage, generate a quasi-steady x-component of the electric field which accelerates and decelerates electrons. We observe significant differences in the structure of the strong electromagnetic fields that are driven by the kinetic instabilities with the pair jet. We find that the two different jet compositions (e± and e– - i+) generate different instability modes respectively. Moreover, the magnetic field in the non-linear stage generated by different instabilities is dissipated and reorganized into new topologies. A 3D magnetic field topology depiction indicates possible reconnection sites in the non-linear stage where the particles are significantly accelerated by the dissipation of the magnetic field associated to a possible reconnection manifestation.

Keywords

relativistic jetskinetic instabilitiesparticle accelerationmagnetic reconnection
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 44 - 48
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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