Theory of MHD waves in the solar corona

Bernard Roberts; VM Nakariakov; R Erdelyi; K Petrovay; Bernard Roberts; M Aschwanden

Theory of MHD waves in the solar corona

Bernard Roberts, VM Nakariakov, R Erdelyi (Editor), K Petrovay (Editor), Bernard Roberts (Editor), M Aschwanden (Editor)

Applied Mathematics

Research output: Other contribution

Abstract

Considerable progress has recently been made in the exploration of oscillations in the corona. A variety of local wave phenomena have been detected in coronal loops and polar plumes (as well as in prominences and globally in the corona). Timescales ranging from seconds to tens of minutes have been found. Here we review the theoretical developments that have been used to interpret the properties of observed oscillations in coronal loops and plumes. Magnetohydrodynamic theory is found to give a good description of the waves. Both standing and impulsively excited waves axe invoked. The enigmatic rapid damping of the observed oscillations is discussed, with theoretical explanations in terms of resonant absorption, phase mixing or enhanced viscosity examined.

Coronal oscillations provide an invaluable means of better understanding the corona, giving rise to the new field of coronal seismology.

Original language	English
Publication status	Published - 2003

Keywords

MAGNETICALLY STRUCTURED ATMOSPHERE
SLOW MAGNETOACOUSTIC WAVES
LONGITUDINAL INTENSITY OSCILLATIONS
HIGH-FREQUENCY OSCILLATIONS
SPHERICAL ALFVEN WAVES
LOOP OSCILLATIONS
RESONANT ABSORPTION
MAGNETOSONIC WAVES
TRANSITION-REGION
FLUX TUBES

Cite this

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title = "Theory of MHD waves in the solar corona",

abstract = "Considerable progress has recently been made in the exploration of oscillations in the corona. A variety of local wave phenomena have been detected in coronal loops and polar plumes (as well as in prominences and globally in the corona). Timescales ranging from seconds to tens of minutes have been found. Here we review the theoretical developments that have been used to interpret the properties of observed oscillations in coronal loops and plumes. Magnetohydrodynamic theory is found to give a good description of the waves. Both standing and impulsively excited waves axe invoked. The enigmatic rapid damping of the observed oscillations is discussed, with theoretical explanations in terms of resonant absorption, phase mixing or enhanced viscosity examined.Coronal oscillations provide an invaluable means of better understanding the corona, giving rise to the new field of coronal seismology.",

keywords = "MAGNETICALLY STRUCTURED ATMOSPHERE, SLOW MAGNETOACOUSTIC WAVES, LONGITUDINAL INTENSITY OSCILLATIONS, HIGH-FREQUENCY OSCILLATIONS, SPHERICAL ALFVEN WAVES, LOOP OSCILLATIONS, RESONANT ABSORPTION, MAGNETOSONIC WAVES, TRANSITION-REGION, FLUX TUBES",

author = "Bernard Roberts and VM Nakariakov and R Erdelyi and K Petrovay and Bernard Roberts and M Aschwanden",

note = "Turbulence, Waves and Instabilities the Solar Plasma, NATO Science Series , Kluwer, Dordrecht",

year = "2003",

language = "English",

type = "Other",

}

TY - GEN

T1 - Theory of MHD waves in the solar corona

AU - Roberts, Bernard

AU - Nakariakov, VM

A2 - Erdelyi, R

A2 - Petrovay, K

A2 - Roberts, Bernard

A2 - Aschwanden, M

N1 - Turbulence, Waves and Instabilities the Solar Plasma, NATO Science Series , Kluwer, Dordrecht

PY - 2003

Y1 - 2003

N2 - Considerable progress has recently been made in the exploration of oscillations in the corona. A variety of local wave phenomena have been detected in coronal loops and polar plumes (as well as in prominences and globally in the corona). Timescales ranging from seconds to tens of minutes have been found. Here we review the theoretical developments that have been used to interpret the properties of observed oscillations in coronal loops and plumes. Magnetohydrodynamic theory is found to give a good description of the waves. Both standing and impulsively excited waves axe invoked. The enigmatic rapid damping of the observed oscillations is discussed, with theoretical explanations in terms of resonant absorption, phase mixing or enhanced viscosity examined.Coronal oscillations provide an invaluable means of better understanding the corona, giving rise to the new field of coronal seismology.

AB - Considerable progress has recently been made in the exploration of oscillations in the corona. A variety of local wave phenomena have been detected in coronal loops and polar plumes (as well as in prominences and globally in the corona). Timescales ranging from seconds to tens of minutes have been found. Here we review the theoretical developments that have been used to interpret the properties of observed oscillations in coronal loops and plumes. Magnetohydrodynamic theory is found to give a good description of the waves. Both standing and impulsively excited waves axe invoked. The enigmatic rapid damping of the observed oscillations is discussed, with theoretical explanations in terms of resonant absorption, phase mixing or enhanced viscosity examined.Coronal oscillations provide an invaluable means of better understanding the corona, giving rise to the new field of coronal seismology.

KW - MAGNETICALLY STRUCTURED ATMOSPHERE

KW - SLOW MAGNETOACOUSTIC WAVES

KW - LONGITUDINAL INTENSITY OSCILLATIONS

KW - HIGH-FREQUENCY OSCILLATIONS

KW - SPHERICAL ALFVEN WAVES

KW - LOOP OSCILLATIONS

KW - RESONANT ABSORPTION

KW - MAGNETOSONIC WAVES

KW - TRANSITION-REGION

KW - FLUX TUBES

M3 - Other contribution

ER -

Theory of MHD waves in the solar corona

Abstract

Keywords

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