Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic electron precipitation by EMIC waves: importance of
  nonlinear resonant effects   Relativistic electron losses in Earth's radiation belts are usually
attributed to electron resonant scattering by electromagnetic waves. One of the
most important wave mode for such scattering is the electromagnetic ion
cyclotron (EMIC) mode. Within the quasi-linear diffusion framework, the
cyclotron resonance of relativistic electrons with EMIC waves results in very
fast electron precipitation to the atmosphere. However, wave intensities often
exceed the threshold for nonlinear resonant interaction, and such intense EMIC
waves have been shown to transport electrons away from the loss cone due to the
force bunching effect. In this study we investigate if this transport can block
electron precipitation. We combine test particle simulations, low-altitude
ELFIN observations of EMIC-driven electron precipitation, and ground-based EMIC
observations. Comparing simulations and observations, we show that, despite of
the low pitch-angle electrons being transported away from the loss cone, the
scattering at higher pitch angles results in the loss cone filling and electron
precipitation.

23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org