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Browsing by Subject "Magnetohydrodynamic Stability"

Browsing by Subject "Magnetohydrodynamic Stability"

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  • Absorption bursts in the radio emission from the sun at decameter wavelengths 
    Sastry, Ch. V; Subramanian, K. R; Krishan, V (Gordon and Breach Science Publishers, 1983)
    Some characteristics of sudden decreases in the observed radio emission from the sun at decameter wavelengths are presented, and possible interpretations are discussed. These 'absorption bursts' occurred during periods of ...
  • Conductivity of an ion-acoustically turbulent plasma 
    Krishan, V (D.Reidel Publishing Co.,, 1978-09)
    Three different mechanisms are suggested for the non-linear saturation of the ion-acoustic instability. These include the indirect wave-particle interaction, the scattering on density fluctuations and the effects of energy ...
  • Frequency response of magnetic flux sheaths 
    Venkatakrishnan, P (D. Reidel Publishing Co., 1979-08)
    When a sound wave is incident on a magnetic flux sheath, it causes fluctuations in the mean magnetic field of the sheath. We have calculated the space-average of the longitudinal component of these fluctuations and plotted ...
  • A magneto-hydrodynamic study of pre-flare loops 
    Hasan, S. S (Institute of Theoretical Astrophysics, 1979)
    The magnetohydrodynamic equilibrium and stability of a configuration which may apply to solar pre-flare loops is analyzed based on the following scenario: (1) the loops exist much prior to the flare and in equilibrium with ...
  • Magnetohydrodynamic equilibrium and stability of pre-flare loops - Constant pitch field 
    Hasan, S. S (D. Reidel Publishing Co.,, 1980-08)
    The equilibrium and stability of a loop in which energy storage occurs prior to a solar flare is discussed. Working on the hypothesis, that the onset of the flare begins only after sufficient magnetic energy has been stored ...
  • Nonlinear development of convective instability within slender flux tubes. II - The effect of radiative heat transport 
    Venkatakrishnan, P (Indian Academy of Sciences, 1985-03)
    Inclusion of radiative heat transport in the energy equation for a slender flux tube leads to oscillations of the tube. The amplitude of the oscillations depends on the radius of the tube when lateral heat exchange alone ...
  • On the stability of helical velocity and magnetic fields 
    Kochhar, R. K (D. Reidel Publishing Company, 1978-05)
    In this paper we study the stability of an infinitely conducting, incompressible, inviscid infinite cylinder with non-parallel helical velocity and magnetic field. It is shown that the system is stable if the energy in the ...
  • Plasma acceleration by ion-acoustic turbulence 
    Krishan, V (Kluwer Academic Publishers, 1980-12)
    An energetic proton beam passing through a stationary ionized medium, excites ion-acoustic turbulence. The ion-acoustic instability saturates due to the non-linear indirect wave-particle scattering. The electric field ...
  • Plasma acceleration by ion-acoustic turbulence 
    Krishan, V (D. Reidel Publishing Co., 1980-12)
    An energetic proton beam passing through a stationary ionized medium, excites ion-acoustic turbulence. The ion-acoustic instability saturates due to the non-linear indirect wave-particle scattering. The electric field ...
  • Plasma mechanisms for variability in active galactic nuclei 
    Krishan, V; Wiita, P J (1994-03)
    We consider several physical processes, dominated by plasma effects, that might play roles in producing variability in Active Galactic Nuclei (AGN). One class of processes involves oscillations in the plasma itself. If ...
  • Radio emission by parallel acceleration mechanism 
    Krishan, V; Sivaram, C (Springer, 1983-04)
    The equations describing the linear-acceleration mechanism of radiation emission are generalized and applied to type III and IIIb solar radio bursts. A general expression for the power emitted by an electron in a spatially ...
  • Radio frequency emission in electron beam-plasma and beam-beam interaction 
    Krishan, V; Sinha, K. P; Krishan, S (D.Reidel Publishing Co.,, 1978-01)
    A linear excitation of electromagnetic modes at frequencies ~_ (n+1/2)ωce , in a plasma through which two electron beams are contra-streaming along the magnetic field is investigated. This may be a source of the observed ...

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