A laboratory plasma experiment for studying magnetic dynamics of accretion discs and jets

@article{Hsu2002ALP,
  title={A laboratory plasma experiment for studying magnetic dynamics of accretion discs and jets},
  author={Scott C. Hsu and Paul M. Bellan},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2002},
  volume={334},
  pages={257-261}
}
  • S. Hsu, P. Bellan
  • Published 20 February 2002
  • Physics
  • Monthly Notices of the Royal Astronomical Society
This work describes a laboratory plasma experiment and initial results which should give insight into the magnetic dynamics of accretion discs and jets. A high-speed multiple-frame CCD camera reveals images of the formation and helical instability of a collimated plasma, similar to MHD models of disc jets, and also plasma detachment associated with spheromak formation, which may have relevance to disc winds and flares. The plasmas are produced by a planar magnetized coaxial gun. The resulting… 
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References

SHOWING 1-10 OF 14 REFERENCES
Numerical Simulations of Astrophysical Jets from Keplerian Disks. II. Episodic Outflows
We present 2.5-dimensional time-dependent simulations of the nonlinear evolution of nonrelativistic outflows from Keplerian accretion disks orbiting low-mass protostars or black holes accreting at…
Jets from Accreting Magnetic Young Stellar Objects. I. Comparison of Observations and High-Resolution Simulation Results
High-resolution numerical magnetohydrodynamic (MHD) simulations of a new model for the formation of jets from magnetic accreting young stellar objects (YSOs) are presented and compared with…
Taylor relaxation and λ decay of unbounded, freely expanding spheromaks
A magnetized coaxial gun is discharged into a much larger vacuum chamber and the subsequent evolution of the plasma is observed using high speed cameras and a magnetic probe array. Photographic…
Relaxation and magnetic reconnection in plasmas
The theory of plasma relaxation is described and developed. Turbulence, allied with a small resistivity, allows the plasma rapid access to a particular minimum-energy state. This process involves…
Production of wiggled structure of AGN radio jets in the sweeping magnetic twist mechanism
Dynamo model of double radio sources
A model of radio sources is proposed in which the magnetised accretion disk of a massive black hole acts as an electric dynamo producing two oppositely-directed beams of ultra-relativistic particles.
MHD stability of Spheromak
The ‘Spheromak’, an optimal force-free spherical plasma configuration, is analysed for its MHD stability properties. It is shown that flattened ellipse (oblimak) with j⃗ = kB⃗ (k independent of r⃗)…
Review of spheromak research
Spheromak research from 1979 to the present is reviewed including over I60 references. Emphasis is on understanding and interpretation of results. In addition to summarizing results some new…
Phys. Plasmas
  • Phys. Plasmas
  • 2000
Hydromagnetic flows from accretion discs and the production of radio jets
...
...