The spatial damping of magnetohydrodynamic waves in a flowing partially ionised prominence plasma
arXiv:1001.4962 · doi:10.1051/0004-6361/200913024
Abstract
Solar prominences are partially ionised plasmas displaying flows and oscillations. These oscillations show time and spatial damping and, commonly, have been explained in terms of magnetohydrodynamic (MHD) waves. We study the spatial damping of linear non-adiabatic MHD waves in a flowing partially ionised plasma, having prominence-like physical properties. We consider single fluid equations for a partially ionised hydrogen plasma including in the energy equation optically thin radiation, thermal conduction by electrons and neutrals, and heating. Keeping the frequency real and fixed, we have solved the obtained dispersion relations for the complex wavenumber, k, and have analysed the behaviour of the damping length, wavelength and the ratio of the damping length to the wavelength, versus period, for Alfven, fast, slow and thermal waves.
28 pages, 9 figures
References in corpus (7)
- Physics of Solar Prominences: I - Spectral Diagnostics and Non-LTE Modelling
- Damping of Fast Magnetohydrodynamic Oscillations in Quiescent Filament Threads
- Magnetohydrodynamic Waves in a Partially Ionized Filament Thread
- Damping of filament thread oscillations: effect of the slow continuum
- Non-adiabatic magnetohydrodynamic waves in a cylindrical prominence thread with mass flow
- Resonantly Damped Kink Magnetohydrodynamic Waves in a Partially Ionized Filament Thread
- Resonantly damped surface and body MHD waves in a solar coronal slab with oblique propagation
Cited by in corpus (14)
- Partially Ionized Plasmas in Astrophysics
- Magnetohydrodynamic waves in solar partially ionized plasmas: two-fluid approach
- Propagation of Alfvénic Waves From Corona to Chromosphere and Consequences for Solar Flares
- Damping of Alfven waves in solar partially ionized plasmas: effect of neutral helium in multi-fluid approach
- Torsional Alfvén waves in solar partially ionized plasma: effects of neutral helium and stratification
- Damping mechanisms for oscillations in solar prominences
- Cut-off wavenumber of Alfven waves in partially ionized plasmas of the solar atmosphere
- Resonant Alfven waves in partially ionized plasmas of the solar atmosphere
- The role of Alfvén wave heating in solar prominences
- Spatial Damping of Propagating Kink Waves in Prominence Threads
- Dissipative instability in partially ionised prominence plasmas
- The Thermal Instability of Solar Prominence Threads
- Dispersive shock waves in partially ionised plasmas
- Dissipative instability in a partially ionised prominence slab