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Magnetic dissipation in relativistic jets

(2016) GALAXIES. 4(4).
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Abstract
The most promising mechanisms for producing and accelerating relativistic jets, and maintaining collimated structure of relativistic jets involve magnetohydrodynamical (MHD) processes. We have investigated the magnetic dissipation mechanism in relativistic jets via relativistic MHD simulations. We found that the relativistic jets involving a helical magnetic field are unstable for the current-driven kink instability, which leads to helically distorted structure in relativistic jets. We identified the regions of high current density in filamentary current sheets, indicative of magnetic reconnection, which are associated to the kink unstable regions and correlated to the converted regions of magnetic to kinetic energies of the jets. We also found that an over-pressured relativistic jet leads to the generation of a series of stationary recollimation shocks and rarefaction structures by the nonlinear interaction of shocks and rarefaction waves. The differences in the recollimation shock structure due to the difference of the magnetic field topologies and strengths may be observable through mm-VLBI observations and space-VLBI mission.
Keywords
galaxies: jets, magnetohydrodynamics (MHD), methods: numerical, instabilities, shock waves, CURRENT-DRIVEN INSTABILITY, MAGNETOHYDRODYNAMIC SIMULATIONS, POYNTING-FLUX, KINK INSTABILITY, ACCRETION DISKS, TEV VARIABILITY, DOMINATED JETS, SPATIAL GROWTH, BL LACERTAE, RECONNECTION

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Citation

Please use this url to cite or link to this publication:

MLA
Mizuno, Yosuke, et al. “Magnetic Dissipation in Relativistic Jets.” GALAXIES, vol. 4, no. 4, 2016, doi:10.3390/galaxies4040040.
APA
Mizuno, Y., Gómez, J., Nishikawa, K.-I., Meli, A., Hardee, P., Rezzolla, L., … Pino, E. (2016). Magnetic dissipation in relativistic jets. GALAXIES, 4(4). https://doi.org/10.3390/galaxies4040040
Chicago author-date
Mizuno, Yosuke, Jose Gómez, Ken-Ichi Nishikawa, Athina Meli, Philip Hardee, Luciano Rezzolla, Chandra Singh, and Elisabete Pino. 2016. “Magnetic Dissipation in Relativistic Jets.” GALAXIES 4 (4). https://doi.org/10.3390/galaxies4040040.
Chicago author-date (all authors)
Mizuno, Yosuke, Jose Gómez, Ken-Ichi Nishikawa, Athina Meli, Philip Hardee, Luciano Rezzolla, Chandra Singh, and Elisabete Pino. 2016. “Magnetic Dissipation in Relativistic Jets.” GALAXIES 4 (4). doi:10.3390/galaxies4040040.
Vancouver
1.
Mizuno Y, Gómez J, Nishikawa K-I, Meli A, Hardee P, Rezzolla L, et al. Magnetic dissipation in relativistic jets. GALAXIES. 2016;4(4).
IEEE
[1]
Y. Mizuno et al., “Magnetic dissipation in relativistic jets,” GALAXIES, vol. 4, no. 4, 2016.
@article{8534617,
  abstract     = {The most promising mechanisms for producing and accelerating relativistic jets, and maintaining collimated structure of relativistic jets involve magnetohydrodynamical (MHD) processes. We have investigated the magnetic dissipation mechanism in relativistic jets via relativistic MHD simulations. We found that the relativistic jets involving a helical magnetic field are unstable for the current-driven kink instability, which leads to helically distorted structure in relativistic jets. We identified the regions of high current density in filamentary current sheets, indicative of magnetic reconnection, which are associated to the kink unstable regions and correlated to the converted regions of magnetic to kinetic energies of the jets. We also found that an over-pressured relativistic jet leads to the generation of a series of stationary recollimation shocks and rarefaction structures by the nonlinear interaction of shocks and rarefaction waves. The differences in the recollimation shock structure due to the difference of the magnetic field topologies and strengths may be observable through mm-VLBI observations and space-VLBI mission.},
  articleno    = {40},
  author       = {Mizuno, Yosuke and Gómez, Jose and Nishikawa, Ken-Ichi and Meli, Athina and Hardee, Philip and Rezzolla, Luciano and Singh, Chandra and Pino, Elisabete},
  issn         = {2075-4434},
  journal      = {GALAXIES},
  keywords     = {galaxies: jets,magnetohydrodynamics (MHD),methods: numerical,instabilities,shock waves,CURRENT-DRIVEN INSTABILITY,MAGNETOHYDRODYNAMIC SIMULATIONS,POYNTING-FLUX,KINK INSTABILITY,ACCRETION DISKS,TEV VARIABILITY,DOMINATED JETS,SPATIAL GROWTH,BL LACERTAE,RECONNECTION},
  language     = {eng},
  number       = {4},
  pages        = {8},
  title        = {Magnetic dissipation in relativistic jets},
  url          = {http://dx.doi.org/10.3390/galaxies4040040},
  volume       = {4},
  year         = {2016},
}

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