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Electron heating by large amplitude shear Alfvén waves in the upper chromosphere with force-free magnetic configuration View all abstracts by submitter

Jun-ichi Sakai   Submitted: 2005-12-20 21:44

We investigate how large amplitude shear Alfvén waves (AWs) can heat the upper chromosphere with magnetic force-free configuration, by using a 2D3V fully relativistic electromagnetic particle-in-cell (PIC) simulation. 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 (MTSI), resulting in electron heating within short time tsimeq50{omegaci}-1. The obtained results could be applied to the electron heating in the upper chromosphere where small-scale magnetic flux tubes are interacting with each other, causing shear magnetic field structures between them.

Authors: J.I. Sakai and S. Saito

Publication Status: A & A (in press)
Last Modified: 2006-01-23 02:06
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