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Slow magnetoacoustic waves

Nonlinear slow magnetoacoustic waves in coronal plasma structures

Nonlinear slow magnetoacoustic waves in coronal plasma structures

... propagating slow magnetoacoustic waves in plasma non-uniformities, taking into account the oblique nature of the perturbations in addition to nonlinearity and ...the waves with lengths much ...

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Wide spectrum slow magnetoacoustic waves in coronal loops

Wide spectrum slow magnetoacoustic waves in coronal loops

... of slow magnetoacoustic ...the waves near the loop footpoints, we constructed a function describing the wave energy flux dissipated into heat in a loop ...of slow magnetoacoustic ...

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Wide spectrum slow magnetoacoustic waves in coronal loops

Wide spectrum slow magnetoacoustic waves in coronal loops

... of slow magnetoacoustic ...the waves near the loop footpoints, we constructed a function describing the wave energy flux dissipated into heat in a loop ...of slow magnetoacoustic ...

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The physical nature of spiral wave patterns in sunspots

The physical nature of spiral wave patterns in sunspots

... of slow magnetoacoustic waves driven below the surface in an untwisted and non-rotating magnetic ...the slow body sausage (m = 0) and kink (m = 1) modes, and the two-armed SWP is formed by the ...

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MHD mode conversion of fast and slow magnetoacoustic waves in the solar corona

MHD mode conversion of fast and slow magnetoacoustic waves in the solar corona

... and slow waves along a characteristic ...the slow wave was shown to stretch out along the magnetic field lines as it approaches the null point, meaning that only a small section of the wave actually ...

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Cut off period for slow magnetoacoustic waves in coronal plasma structures

Cut off period for slow magnetoacoustic waves in coronal plasma structures

... of waves as well as the field-aligned struc- turing of the coronal plasma ...the slow magnetoacoustic mode manifests it- self as a tube mode due to the wave-guiding conditions within plasma ...tube ...

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Seismological determination of the Alfv en speed and plasma beta in solar photospheric bright points

Seismological determination of the Alfv en speed and plasma beta in solar photospheric bright points

... The Alfvén speed and plasma beta in photospheric bright points ( BPs ) observed by the Broadband Filter Imager ( BFI ) of the Solar Optical Telescope on board the Hinode satellite are estimated seismologically. The ...

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Fast magnetoacoustic waves in curved coronal loops  I, Trapped and leaky modes

Fast magnetoacoustic waves in curved coronal loops I, Trapped and leaky modes

... fast magnetoacoustic perturbations. In gen- eral, the magnetoacoustic and Alfvén wave modes are coupled in order to fulfil the line-tied condition at the solar surface (Goedbloed & Halberstadt 1994), so ...

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Effect of local thermal equilibrium misbalance on long wavelength slow magnetoacoustic waves

Effect of local thermal equilibrium misbalance on long wavelength slow magnetoacoustic waves

... the slow wave be- haviour is very sensitive to the particular fea- tures of the dependences of the radiative cool- ing/heating function on the physical quantities perturbed by the wave, ...dissipation, slow ...

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Damping of slow magnetoacoustic oscillations by the misbalance between heating and cooling processes in the solar corona

Damping of slow magnetoacoustic oscillations by the misbalance between heating and cooling processes in the solar corona

... of slow magnetoacoustic waves in the in- finite magnetic field approximation, upon which the set of gov- erning equations reduces to the usual hydrodynamic Euler equa- tion, continuity equation, ...

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The propagation and damping of slow magnetoacoustic waves in the solar atmosphere

The propagation and damping of slow magnetoacoustic waves in the solar atmosphere

... Figure 5.1: (a) loop position shown in TRACE 171 A ˚ with (b) the same as (a) but enlarged. Propagating slow waves typically produce oscillations of less than 5% of the background (e.g. De Moortel et al. ...

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Slow magnetoacoustic waves in coronal loops : EIT and TRACE

Slow magnetoacoustic waves in coronal loops : EIT and TRACE

... Our study is focused on active region AR8218, us- ing image sequences of JOP80 (Clette et al. 1998). This JOP (Joint Operation Project) was performed on May 13, 1998 and produced simultaneously high cadence image se- ...

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Coronal loop slow mode oscillations driven by the kink instability

Coronal loop slow mode oscillations driven by the kink instability

... the waves gener- ated following the confined, m = 1 internal kink instability in a short, hot coronal ...overtone) slow mode are observed in the two post-reconnection flux ...fundamental slow mode ...

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Fast magnetoacoustic waves in curved coronal loops  II, Tunneling modes

Fast magnetoacoustic waves in curved coronal loops II, Tunneling modes

... Lateral wave leakage of vertically polarised fast magnetoacous- tic oscillations is an e ffi cient damping mechanism. Figures 8 and 9 show the quality factor of the oscillation, τ/P. Firstly, overall the oscillation ...

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Fast magnetoacoustic waves in non equilibrium solar wind and coronal plasmas

Fast magnetoacoustic waves in non equilibrium solar wind and coronal plasmas

... ULF waves was also strongly correlated with the observed temperature anisotropy in the foreshock, at least for the right-hand polarised ...ULF waves and it has been often discussed in the context of cosmic ...

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Magnetohydrodynamic surface waves in the solar atmosphere

Magnetohydrodynamic surface waves in the solar atmosphere

... of magnetoacoustic-gravity surface waves is necessarily complicated, a reflection of the highly anisotropic character of a magnetically structured and stratified ...

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Magnetoacoustic waves and the Kelvin-Helmholtz instability in a steady asymmetric slab

Magnetoacoustic waves and the Kelvin-Helmholtz instability in a steady asymmetric slab

... a slow kink mode propagat- ing along a highly asymmetric steady ...both slow and fast modes, the transverse component of the displacement is highly sensitive to the density ...The slow mode ...

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Observation of quasi periodic solar radio bursts associated with propagating fast mode waves

Observation of quasi periodic solar radio bursts associated with propagating fast mode waves

... The triple band type II burst is clearly resolved in the radio spectra, and it is possible to match the strong harmonic emission with their fundamental counterparts. The series of periodic ra- dio ‘sparks’ which precede ...

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Slow magnetic Rossby waves in the Earth's core

Slow magnetic Rossby waves in the Earth's core

... The results suggest that we could use nonaxisymmetric magnetic Rossby waves to infer the strength of the toroidal component of the magnetic field in the Earth’s core. The best chance of detection and identification ...

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Solar Magnetoseismology with Magnetoacoustic Surface Waves in Asymmetric Magnetic Slab Waveguides

Solar Magnetoseismology with Magnetoacoustic Surface Waves in Asymmetric Magnetic Slab Waveguides

... (MHD) waves to the wave solutions of inhomogeneous plasma modeling of the medium in which the waves propagate, we can make approximations of traditionally difficult-to-measure plasma parameters such as the ...

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