The quasi-electrostatic mode of chorus waves and electron nonlinear acceleration

O. V. Agapitov; A.V. Artemyev; D Mourenas; V Krasnoselskikh; J Bonnell; O Le Contel; C. M. Cully; V Angelopoulos

The quasi-electrostatic mode of chorus waves and electron nonlinear acceleration

O. V. Agapitov ^{1, 2} A.V. Artemyev ^{3, 2} D Mourenas ⁴ V Krasnoselskikh ² J Bonnell ¹ O Le Contel ⁵ C. M. Cully ⁶ V Angelopoulos ⁷

1 SSL - Space Sciences Laboratory [Berkeley]

2 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace

3 IKI - Space Research Institute of the Russian Academy of Sciences

4 CEA-DAM - Centre d'Études de Limeil-Valenton

5 LPP - Laboratoire de Physique des Plasmas

6 Department of Physics and Astronomy [Calgary]

7 IGPP - Institute of Geophysics and Planetary Physics [San Diego]

Abstract : Selected Time History of Events and Macroscale Interactions During Substorms observations at medium latitudes of highly oblique and high-amplitude chorus waves are presented and analyzed. The presence of such very intense waves is expected to have important consequences on electron energization in the magnetosphere. An analytical model is therefore developed to evaluate the efficiency of the trapping and acceleration of energetic electrons via Landau resonance with such nearly electrostatic chorus waves. Test-particle simulations are then performed to illustrate the conclusions derived from the analytical model, using parameter values consistent with observations. It is shown that the energy gain can be much larger than the initial particle energy for 10 keV electrons, and it is further demonstrated that this energy gain is weakly dependent on the density variation along field lines.

Document type :

Journal articles

Domain :

Sciences of the Universe [physics]

Complete list of metadatas

https://hal-insu.archives-ouvertes.fr/insu-01171206
Contributor : Nathalie Pothier <>
Submitted on : Friday, July 3, 2015 - 10:25:12 AM
Last modification on : Wednesday, September 4, 2019 - 2:22:04 PM
Long-term archiving on : Tuesday, April 25, 2017 - 10:20:17 PM

Agapitov_et_al-2014-Journal_of...

Publication funded by an institution

The quasi-electrostatic mode of chorus waves and electron nonlinear acceleration

File

Identifiers

Collections

Citation

Export

Metrics

383

259

Contact

The quasi-electrostatic mode of chorus waves and electron nonlinear acceleration

File

Identifiers

Collections

Citation

Export

Share

Metrics

383

259

Contact