Particle-in-cell Simulations of Global Relativistic Jets with Helical Magnetic Fields
Nov 9, 2016
4 pages
Part of Proceedings, IAU Symposium 324: New Frontiers in Black Hole Astrophysics : Ljubljana, Slovenia, September 12-16, 2016, 199-202
Published in:
- IAU Symp. 324 (2016) 199-202
Contribution to:
- IAU Symposium 324, 199-202
- Published: Jun 23, 2017
e-Print:
- 1611.02882 [astro-ph.HE]
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Abstract: (Cambridge University Press)
We study the interaction of relativistic jets with their environment, using 3-dimen- sional relativistic particle-in-cell simulations for two cases of jet composition: (i) electron-proton (e− − p+) and (ii) electron-positron (e±) plasmas containing helical magnetic fields. 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 and the Mushroom instability. We have found that these kinetic instabilities are suppressed and new types of instabilities can grow. For the e− − p+ jet, a recollimation-like instability occurs and jet electrons are strongly perturbed, whereas for the e± jet, a recollimation-like instability occurs at early times followed by kinetic instability and the general structure is similar to a simulation without a helical magnetic field. We plan to perform further simulations using much larger systems to confirm these new findings.Note:
- 4 pages, 1 figure, New Frontiers in Black Hole Astrophysics, Proceedings of the IAU Symposium No. 324, A. Gomboc, ed
- plasmas
- instabilities
- magnetic fields
- shock waves
- relativity
- galaxies: jets
- active
- jet: relativistic
- electron: jet
- stability
References(12)
Figures(4)