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Microscopic processes in global relativistic jets containing helical magnetic fields

(2016) GALAXIES. 4(4).
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Abstract
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 (e(+/-)) relativistic jets containing helical magnetic fields, focusing on their interaction with an ambient plasma. 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). In our initial simulation study these kinetic instabilities are suppressed and new types of instabilities can grow. In the e(-)-p(+) jet simulation a recollimation-like instability occurs and jet electrons are strongly perturbed. In the e(+/-) jet simulation a recollimation-like instability occurs at early times followed by a kinetic instability and the general structure is similar to a simulation without helical magnetic field. Simulations using much larger systems are required in order to thoroughly follow the evolution of global jets containing helical magnetic fields.
Keywords
relativistic jets, particle-in-cell simulations, global jets, helical magnetic fields, kinetic instabilities, kink instability, KELVIN-HELMHOLTZ INSTABILITY, CURRENT-DRIVEN INSTABILITY, GAMMA-RAY BURSTS, WEIBEL INSTABILITY, PARTICLE-ACCELERATION, SPATIAL GROWTH, GENERATION, SHOCKS, SIMULATION, EMISSION

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MLA
Nishikawa, Ken-Ichi, et al. “Microscopic Processes in Global Relativistic Jets Containing Helical Magnetic Fields.” GALAXIES, vol. 4, no. 4, 2016, doi:10.3390/galaxies4040038.
APA
Nishikawa, K.-I., Mizuno, Y., Niemiec, J., Kobzar, O., Pohl, M., Gómez, J., … Hartmann, D. (2016). Microscopic processes in global relativistic jets containing helical magnetic fields. GALAXIES, 4(4). https://doi.org/10.3390/galaxies4040038
Chicago author-date
Nishikawa, Ken-Ichi, Yosuke Mizuno, Jacek Niemiec, Oleh Kobzar, Martin Pohl, Jose Gómez, Ioana Duţan, et al. 2016. “Microscopic Processes in Global Relativistic Jets Containing Helical Magnetic Fields.” GALAXIES 4 (4). https://doi.org/10.3390/galaxies4040038.
Chicago author-date (all authors)
Nishikawa, Ken-Ichi, Yosuke Mizuno, Jacek Niemiec, Oleh Kobzar, Martin Pohl, Jose Gómez, Ioana Duţan, Asaf Pe’er, Jacob Frederiksen, Åke Nordlund, Athina Meli, Helene Sol, Philip Hardee, and Dieter Hartmann. 2016. “Microscopic Processes in Global Relativistic Jets Containing Helical Magnetic Fields.” GALAXIES 4 (4). doi:10.3390/galaxies4040038.
Vancouver
1.
Nishikawa K-I, Mizuno Y, Niemiec J, Kobzar O, Pohl M, Gómez J, et al. Microscopic processes in global relativistic jets containing helical magnetic fields. GALAXIES. 2016;4(4).
IEEE
[1]
K.-I. Nishikawa et al., “Microscopic processes in global relativistic jets containing helical magnetic fields,” GALAXIES, vol. 4, no. 4, 2016.
@article{8534607,
  abstract     = {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 (e(+/-)) relativistic jets containing helical magnetic fields, focusing on their interaction with an ambient plasma. 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). In our initial simulation study these kinetic instabilities are suppressed and new types of instabilities can grow. In the e(-)-p(+) jet simulation a recollimation-like instability occurs and jet electrons are strongly perturbed. In the e(+/-) jet simulation a recollimation-like instability occurs at early times followed by a kinetic instability and the general structure is similar to a simulation without helical magnetic field. Simulations using much larger systems are required in order to thoroughly follow the evolution of global jets containing helical magnetic fields.},
  articleno    = {38},
  author       = {Nishikawa, Ken-Ichi and Mizuno, Yosuke and Niemiec, Jacek and Kobzar, Oleh and Pohl, Martin and Gómez, Jose and Duţan, Ioana and Pe’er, Asaf and Frederiksen, Jacob and Nordlund, Åke and Meli, Athina and Sol, Helene and Hardee, Philip and Hartmann, Dieter},
  issn         = {2075-4434},
  journal      = {GALAXIES},
  keywords     = {relativistic jets,particle-in-cell simulations,global jets,helical magnetic fields,kinetic instabilities,kink instability,KELVIN-HELMHOLTZ INSTABILITY,CURRENT-DRIVEN INSTABILITY,GAMMA-RAY BURSTS,WEIBEL INSTABILITY,PARTICLE-ACCELERATION,SPATIAL GROWTH,GENERATION,SHOCKS,SIMULATION,EMISSION},
  language     = {eng},
  number       = {4},
  pages        = {7},
  title        = {Microscopic processes in global relativistic jets containing helical magnetic fields},
  url          = {http://dx.doi.org/10.3390/galaxies4040038},
  volume       = {4},
  year         = {2016},
}

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