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Volume 35, issue 4
Ann. Geophys., 35, 999–1013, 2017
https://doi.org/10.5194/angeo-35-999-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 35, 999–1013, 2017
https://doi.org/10.5194/angeo-35-999-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 28 Aug 2017

Regular paper | 28 Aug 2017

Electron cyclotron maser instability (ECMI) in strong magnetic guide field reconnection

Rudolf A. Treumann and Wolfgang Baumjohann
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Cited articles  
Baumjohann, W. and Treumann, R. A.: Basic space plasma physics, revised Edn. 2012, Imperial College Press, London, UK, 1996.
Bessho, N., Chen, L. J., Shuster, J. R., and Wang, S.: Electron diustribution functions in the electron diffusion region of magnetic reconnection: Physics behind the fine structures, Geophys. Res. Lett., 41, 8688–8695, https://doi.org/10.1002/2014GL062034, 2014.
Bykov, A. M. and Treumann, R. A.: Fundamentals of collisionless shocks for astrophysical application, 2. Relativistic shocks, Astron. Astrophys. Rev., 19, 42, https://doi.org/10.1007/s00159-011-0042-8, 2011.
Carlson, C. W., McFadden, J. P., Ergun, R. E., Temerin, M., Peria, W., Mozer, F. S., Klumpar, D. M., Shelley, E. G., Peterson, W. K., Moebius, E., Elphic, R., Strangeway, R., Cattett, C., and Pfaff, R.: FAST observations in the downward auroral current region: Energetic ugoing electron beams, parallel potential drops, and ion heating, Geophys. Res. Lett., 25, 2017–2020, https://doi.org/10.1029/98GL00851, 1998.
Chaston, C. C., Bonnell, J. W., Carlson, C. W., McFadden, J. P., Ergun, R. E., and Strangeway, R. J.: Properties of small-scale Alfvén waves and accelerated electrons from FAST, J. Geophys. Res., 108, 8003, https://doi.org/10.1029/2002JA009420, 2003.
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It is suggested that collisionless reconnection under conditions of very strong current-parallel guide fields in dilute plasmas should become a rather efficient source of electromagnetic radiation in the free space modes X and O and their harmonics. The mechanism is based on the electron cyclotron maser instability (ECMI), which can be excited by the anisotropic weakly relativistic electron distribution in the many inertial lengths long electron exhausts caused in reconnection.
It is suggested that collisionless reconnection under conditions of very strong current-parallel...
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