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- Coronal_seismology abstract "Coronal seismology is a technique of studying the plasma of the Sun's corona with the use of magnetohydrodynamic (MHD) waves and oscillations. Magnetohydrodynamics studies the dynamics of electrically conducting fluids - in this case the fluid is the coronal plasma. Observed properties of the waves (e.g. period, wavelength, amplitude, temporal and spatial signatures, characteristic scenarios of the wave evolution), combined with a theoretical modelling of the wave phenomena (dispersion relations, evolutionary equations, etc.), reveal physical parameters of the corona which are not open to direct observations, such as the coronal magnetic field strength and Alfvén velocity and coronal dissipative coefficients. Originally, the method of MHD coronal seismology was suggested by Y. Uchida in 1970for global seismology (propagating waves) and B. Roberts et al. in 1984for local seismology (standing waves), but was not practically applied until the late 90s due to a lack of necessary observational resolution.Philosophically, coronal seismology is similar to the Earth's seismology, helioseismology, and MHD spectroscopy of laboratory plasma devices. In all these approaches, waves of various kind are used to probe a medium. The theoretical foundation of coronal seismology is the dispersion relation of MHD modes of a plasma cylinder: a plasma structure which is nonuniform in the transverse direction and extended along the magnetic field. This model works well for the description of a number of plasma structures observed in the solar corona: e.g. coronal loops, prominence fibrils, plumes, various filaments. Such a structure acts as a waveguide of MHD waves.This discussion is adapted from Valery M. Nakariakov and Erwin Verwichte, "Coronal Waves and Oscillations", Living Rev. Solar Phys. 2, (2005), (cited on November 26, 2009).".
- Coronal_seismology thumbnail Coronal_arcade.gif?width=300.
- Coronal_seismology wikiPageExternalLink 3527409947.
- Coronal_seismology wikiPageExternalLink lrsp-2005-3.
- Coronal_seismology wikiPageExternalLink feature.asp?id=15F1&style=feature.
- Coronal_seismology wikiPageExternalLink seismology.
- Coronal_seismology wikiPageID "18176668".
- Coronal_seismology wikiPageRevisionID "600523353".
- Coronal_seismology hasPhotoCollection Coronal_seismology.
- Coronal_seismology subject Category:Plasma_physics.
- Coronal_seismology subject Category:Solar_phenomena.
- Coronal_seismology subject Category:Space_plasmas.
- Coronal_seismology subject Category:Sun.
- Coronal_seismology subject Category:Waves_in_plasmas.
- Coronal_seismology type Abstraction100002137.
- Coronal_seismology type BodySubstance105263850.
- Coronal_seismology type Event100029378.
- Coronal_seismology type ExtracellularFluid105398023.
- Coronal_seismology type Happening107283608.
- Coronal_seismology type LiquidBodySubstance105397468.
- Coronal_seismology type Matter100020827.
- Coronal_seismology type Movement107309781.
- Coronal_seismology type Part113809207.
- Coronal_seismology type PhysicalEntity100001930.
- Coronal_seismology type Plasma105403427.
- Coronal_seismology type PsychologicalFeature100023100.
- Coronal_seismology type Relation100031921.
- Coronal_seismology type SpacePlasmas.
- Coronal_seismology type Substance100019613.
- Coronal_seismology type Wave107352190.
- Coronal_seismology type WavesInPlasmas.
- Coronal_seismology type YagoPermanentlyLocatedEntity.
- Coronal_seismology comment "Coronal seismology is a technique of studying the plasma of the Sun's corona with the use of magnetohydrodynamic (MHD) waves and oscillations. Magnetohydrodynamics studies the dynamics of electrically conducting fluids - in this case the fluid is the coronal plasma. Observed properties of the waves (e.g.".
- Coronal_seismology label "Coronal seismology".
- Coronal_seismology sameAs m.04cqt22.
- Coronal_seismology sameAs Q5172179.
- Coronal_seismology sameAs Q5172179.
- Coronal_seismology sameAs Coronal_seismology.
- Coronal_seismology wasDerivedFrom Coronal_seismology?oldid=600523353.
- Coronal_seismology depiction Coronal_arcade.gif.
- Coronal_seismology isPrimaryTopicOf Coronal_seismology.