Experimental Demonstration of Magneto-hydrodynamic Waves

Lundquist, S.

doi:10.1038/164145a0

Cited by 42 publications

(24 citation statements)

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“…AW was discovered for the first time theoretically by Hannes Alfvén (Alfvén 1942) and observed in the laboratory experiments by many researchers (Kletzing et al 2003;Fältham-mar and Dessler 1995;Bostick and Levine 1952;Lundquist 1949). The restoring force and inertia for AWs are provided by pressure of the magnetic field and ion mass respectively.…”

Section: Introductionmentioning

confidence: 95%

Nonlinear evolution of 3D-inertial Alfvén wave and turbulent spectra in Auroral region

Rinawa

Modi

Sharma

2014

Astrophys Space Sci

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In the present paper, we have investigated nonlinear interaction of three dimensional (3D) inertial Alfvén wave and perpendicularly propagating magnetosonic wave for low β-plasma (β m e /m i ). We have developed the set of dimensionless equations in the presence of ponderomotive nonlinearity due to 3D-inertial Alfvén wave in the dynamics of perpendicularly propagating magnetosonic wave. Stability analysis and numerical simulation has been carried out to study the effect of nonlinear coupling on the formation of localized structures and turbulent spectra, applicable to auroral region. The results reveal that the localized structures become more and more complex as the nonlinear interaction progresses. Further, we have studied the turbulent spectrum which follows spectral index (∼k −3.57 ) at smaller scales. Relevance of the obtained results has been shown with the observations received by various spacecrafts like FAST, Hawkeye and Heos 2.

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Section: Introductionmentioning

confidence: 95%

Nonlinear evolution of 3D-inertial Alfvén wave and turbulent spectra in Auroral region

Rinawa

Modi

Sharma

2014

Astrophys Space Sci

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“…This transverse wave was first predicted to exist by Hannes Alfvén (1942), and was first experimentally studied in the laboratory by Lundquist (1949). Now, we call it the Alfvén wave, or the shear Alfvén wave for the sake of distinguishing from the compressional Alfvén wave driven by the magnetic pressure and discovered by Herlofson (1950).…”

Section: Introductionmentioning

confidence: 99%

Recent progress in nonlinear kinetic Alfvén waves

Chao²

2004

Nonlin. Processes Geophys.

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Abstract. This paper presents a review of recent progress in nonlinear kinetic Alfvén wave (KAW hereafter). We start with the two-fluid theory of KAWs and show how the difference between the motions of electrons and ions in smallscale fields of KAWs modifies the Alfvén wave properties. Then, we focus on nonlinear solitary structures of KAWs. A general criterion of the existence for solitary KAW (SKAW hereafter) and its exact analytical solution in a low-β plasma (β

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“…Investigations on forced magneto-hydrodynamic oscillations in mercury and in liquid sodium have already been carried out by Lundquist [15,16] and Lehnert [17]. Torsional oscillations were fed into the lower end of a cylindrical column of liquid with a magnetic field directed along the axis of symmetry.…”

Section: Magneto-hydrodynamic Wavesmentioning

confidence: 99%

“…Condition (15) implies that the magnetic flux is almost' frozen' in the fluid (Lundquist [4]). Condition (16) corresponds to the same state ment for vortex lines and condition (17) corresponds to a negligible 'slip' between matter and isothermal surfaces being caused by thermal conduction.…”

Section: Conditions On Gosmigal and On Laboratory Scalementioning

confidence: 99%