Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...452..597s&link_type=abstract
Astronomy and Astrophysics, Volume 452, Issue 2, June III 2006, pp.597-601
Astronomy and Astrophysics
Astrophysics
2
Acceleration Of Particles, Sun: Chromosphere, Waves
Scientific paper
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 t≃50{ω_ci}-1. 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.
Saito Shuji
Sakai Jun-Ichi
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