Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tracking Back the Solar Wind to its Photospheric Footpoints from Wind
  Observations -- A Statistical Study   It is of great importance to track the solar wind back to its photospheric
source region and identify the related current sheets; this will provide key
information for investigating the origin and predictions of the solar wind. We
report a statistical study relating the photospheric footpoint motion and
in-situ observation of current sheets in the solar wind. We used the potential
force-free source--surface (PFSS) model and the daily synoptic charts to trace
the solar wind back from 1 AU, as observed by the Wind spacecraft, to the solar
surface. As the footpoints move along the solar surface we obtain a time series
of the jump times between different points. These jumps can be within a cell
and between adjacent cells. We obtained the distribution of the jump times and
the distribution for a subset of the jump times in which only jumps between
adjacent cells were counted. For both cases, the distributions clearly show two
populations. These distributions are compared with the distribution of in-situ
current sheets reported in an earlier work of Miao Peng and Li (2011). Its
implications on the origin of the current sheets are discussed.

34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int