• Corpus ID: 238419350

# Gyrofluid analysis of electron $\beta_e$ effects on collisionless reconnection

@inproceedings{Granier2021GyrofluidAO,
title={Gyrofluid analysis of electron \$\beta\_e\$ effects on collisionless reconnection},
author={Camille Granier and D. Borgogno and Daniela Grasso and Emanuele Tassi},
year={2021}
}
The linear and nonlinear evolutions of the tearing instability in a collisionless plasma with a strong guide field are analyzed on the basis of a two-field Hamiltonian gyrofluid model. The model is valid for a low ion temperature and a finite βe. The finite βe effect implies a magnetic perturbation along the guide field direction and electron finite Larmor radius effects. A Hamiltonian derivation of the model is presented. A new dispersion relation of the tearing instability is derived for the…

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