Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simultaneous Analysis of Recurrent Jovian Electron Increases and
  Galactic Cosmic Ray Decreases   The transport environment for particles in the heliosphere, e.g. galactic
cosmic rays (GCRs) and MeV electrons (including those originating from Jupiters
magnetosphere), is defined by the solar wind flow and the structure of the
embedded heliospheric magnetic field. Solar wind structures, such as
co-rotating interaction regions (CIR), can result in periodically modulation of
both particles species. A detailed analysis of this recurrent Jovian electron
events and galactic cosmic ray decreases measured by SOHO EPHIN is presented
here, showing clearly a change of phase between both phenomena during the cause
of the years 2007 and 2008. This effect can be explained by the change of
difference in heliolongitude between the Earth and Jupiter, which is of central
importance for the propagation of Jovian electrons. Furthermore, the data can
be ordered such that the 27-day Jovian electron variation vanishes in the
sector which does not connect the Earth with Jupiter magnetically using
observed solar wind speeds.

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The categories of this paper are: q-alg
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph