Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 164 - 178 |
| Number of pages | 15 |
| Journal | The Astrophysical Journal |
| Volume | 743 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2011 |
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On the dispersion and scattering of magnetohydrodynamic waves by longitudinally stratified flux tubes. / Andries, Jesse; Cally, Paul Stuart.
In: The Astrophysical Journal, Vol. 743, No. 2, 2011, p. 164 - 178.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - On the dispersion and scattering of magnetohydrodynamic waves by longitudinally stratified flux tubes
AU - Andries, Jesse
AU - Cally, Paul Stuart
PY - 2011
Y1 - 2011
N2 - We provide a fairly general analytic theory for the dispersion and scattering of magnetohydrodynamic waves by longitudinally stratified flux tubes. The theory provides a common framework for, and synthesis of, many previous studies of flux tube oscillations that were carried out under various simplifying assumptions. The present theory focuses on making only a minimal number of assumptions. As a result it thus provides an analytical treatment of several generalizations of existing tube oscillation models. The most important practical cases are inclusion of plasma pressure and possibly buoyancy effects in models of straight non-diverging tubes as applied in coronal seismology, and relaxation of the thin tube approximation in oscillation models of diverging tubes as applied both in the context of p-mode scattering and coronal seismology. In particular, it illustrates the unifying theoretical framework underlying both the description of waves scattered by flux tubes and the dispersion of waves carried along flux tubes
AB - We provide a fairly general analytic theory for the dispersion and scattering of magnetohydrodynamic waves by longitudinally stratified flux tubes. The theory provides a common framework for, and synthesis of, many previous studies of flux tube oscillations that were carried out under various simplifying assumptions. The present theory focuses on making only a minimal number of assumptions. As a result it thus provides an analytical treatment of several generalizations of existing tube oscillation models. The most important practical cases are inclusion of plasma pressure and possibly buoyancy effects in models of straight non-diverging tubes as applied in coronal seismology, and relaxation of the thin tube approximation in oscillation models of diverging tubes as applied both in the context of p-mode scattering and coronal seismology. In particular, it illustrates the unifying theoretical framework underlying both the description of waves scattered by flux tubes and the dispersion of waves carried along flux tubes
UR - http://iopscience.iop.org/0004-637X/743/2/164
U2 - 10.1088/0004-637X/743/2/164
DO - 10.1088/0004-637X/743/2/164
M3 - Article
VL - 743
SP - 164
EP - 178
JO - The Astrophysical Journal
JF - The Astrophysical Journal
SN - 0004-637X
IS - 2
ER -