| Issue |
A&A
Volume 452, Number 2, June III 2006
|
|
|---|---|---|
| Page(s) | 597 - 601 | |
| Section | The Sun | |
| DOI | https://doi.org/10.1051/0004-6361:20054257 | |
| Published online | 22 May 2006 | |
Electron heating by large-amplitude shear Alfvén waves in the upper chromosphere with a force-free magnetic configuration
Laboratory for Plasma Astrophysics, Faculty of Engineering, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan e-mail: sakaijun@eng.u-toyama.ac.jp
Received:
26
September
2005
Accepted:
18
January
2006
Aims.We investigate how large-amplitude shear Alfvén waves (AWs) can heat the upper chromosphere with a magnetic force-free configuration.
Methods. We used a 2D3V fully relativistic electromagnetic particle-in-cell simulation.
Results. We found that the shear AWs with linear polarization and
about one period can excite quasi-electrostatic waves driven by the
modified two-stream instability, resulting in electron heating
within a short time
. The results could be applied to the electron heating in the upper chromosphere
where small-scale magnetic flux tubes are interacting with each other, making shear magnetic field structures between
them.
Key words: acceleration of particles / Sun: chromosphere / waves
© ESO, 2006
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