Cause of super-thermal electron heating during magnetotail reconnection

Details Cause of super-thermal electron heating during magnetotail reconnection Cause of super-thermal electron heating during magnetotail reconnection

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3710102e&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 10, CiteID L10102

Physics

3

Magnetospheric Physics: Magnetic Reconnection (7526, 7835), Magnetospheric Physics: Energetic Particles: Trapped, Magnetospheric Physics: Electric Fields (2411), Magnetospheric Physics: Magnetotail

Scientific paper

We present a candidate mechanism for the energization of super-thermal electrons during magnetic reconnection in the Earth's magnetotail. By analyzing in-situ measurements of electron distribution functions we characterize the relative energy gain of the electrons as a function of energy, Δ${\cal{E}(${\cal{E}). For all the events considered the high energy part of Δ${\cal{E}(${\cal{E}) is nearly independent of ${\cal{E}. This is the signature of energization in an acceleration potential, Φ$\parallel$, which is caused by parallel electric fields in the vicinity of the reconnection region. The same acceleration mechanism is also documented for a kinetic simulation of reconnection.

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