Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scaling in long term data sets of geomagnetic indices and solar wind
  epsilon as seen by WIND spacecraft   We study scaling in fluctuations of the geomagnetic indices (AE, AU, and AL)
that provide a measure of magnetospheric activity and of the epsilon parameter
which is a measure of the solar wind driver. Generalized structure function
(GSF) analysis shows that fluctuations exhibit self-similar scaling up to about
1 hour for the AU index and about 2 hours for AL, AE and epsilon when the most
extreme fluctuations over 10 standard deviations are excluded. The scaling
exponents of the GSF are found to be similar for the three AE indices, and to
differ significantly from that of epsilon. This is corroborated by direct
comparison of their rescaled probability density functions.

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The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg