Diamagnetic and Expansion Effects on the Observable Properties of the Slow Solar Wind in a Coronal Streamer

@article{Rappazzo2005DiamagneticAE,
  title={Diamagnetic and Expansion Effects on the Observable Properties of the Slow Solar Wind in a Coronal Streamer},
  author={A. F. Rappazzo and Marco Velli and Giorgio Einaudi and Russell Blackadore Dahlburg},
  journal={The Astrophysical Journal},
  year={2005},
  volume={633},
  pages={474-488}
}
The plasma density enhancements recently observed by the Large-Angle Spectrometric Coronagraph (LASCO) instrument on board the Solar and Heliospheric Observatory (SOHO) spacecraft have sparked considerable interest. In our previous theoretical study of the formation and initial motion of these density enhancements it is found that beyond the helmet cusp of a coronal streamer the magnetized wake configuration is resistively unstable, that a traveling magnetic island develops at the center of the… Expand
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References

SHOWING 1-10 OF 23 REFERENCES
Plasmoid Formation and Acceleration in the Solar Streamer Belt
The dynamical behavior of a configuration consisting of a plane fluid wake flowing in a current sheet embedded in a plasma sheet that is denser than its surroundings is discussed. This configurationExpand
A model for accelerated density enhancements emerging from coronal streamers in Large‐Angle and Spectrometric Coronagraph observations
Recent Large-Angle and Spectrometric Coronagraph (LASCO) white light observations, ranging between 2 RS and 32 RS, trace accelerated density enhancements in the vicinity of the Sun which can beExpand
Formation of the slow solar wind in a coronal streamer
We have investigated a magnetohydrodynamic mechanism that accounts for several fundamental properties of the slow solar wind, in particular its variability, latitudinal extent, and bulk acceleration.Expand
Origin of Streamer Material in the Outer Corona
We investigate the nature and origin of the outward-moving density inhomogeneities ("blobs") detected previously with the Large Angle and Spectrometric Coronagraph on the Solar and HeliosphericExpand
Measurements of Flow Speeds in the Corona between 2 and 30 R sub sun
Time-lapse sequences of white-light images, obtained during sunspot minimum conditions in 1996 by the Large Angle Spectrometric Coronagraph on the Solar and Heliospheric Observatory, give theExpand
Coronal streamers in the solar wind at 1 AU
Abstract : Examination of solar wind plasma data obtained by the Los Alamos experiments on Imp 6, 7, and 8 during the 1971-1978 interval has revealed a frequent association between minimums in heliumExpand
Waves and streams in the expanding solar wind
The expanding box model (EBM) allows the simulation of the evolution of compressible MHD turbulence within the expanding solar wind, taking into account the basic properties of expansion. Using theExpand
The evolution of Alfvénic perturbations in a three‐dimensional MHD model of the inner heliospheric current sheet region
We investigate an idealized model of the evolution of magnetohydrodynamic (MHD) scale velocity and magnetic field fluctuations in the equatorial region of the inner heliosphere at solar minimum. InExpand
The evolution of a plane jet in a neutral sheet
The linear and nonlinear evolution of the plane magnetized jet, a magnetohydrodynamic configuration consisting of a plane fluid jet embedded in a neutral sheet, is examined. At low Alfven numberExpand
Nonlinear wave evolution in the expanding solar wind.
TLDR
It is shown that the expansion of the plasma delays and possibly freezes the turbulent evolution, but that it also triggers the nonlinear evolution of otherwise stable (Alfven) waves, which can thus release their energy in the wind. Expand
...
1
2
3
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