Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transverse oscillations of loops with coronal rain observed by
  Hinode/SOT   The condensations composing coronal rain, falling down along loop-like
structures observed in cool chromospheric lines such as H$\alpha$ and
\ion{Ca}{2} H, have long been a spectacular phenomenon of the solar corona.
However, considered a peculiar sporadic phenomenon, it has not received much
attention. This picture is rapidly changing due to recent high resolution
observations with instruments such as \textit{Hinode}/SOT, CRISP of
\textit{SST} and \textit{SDO}. Furthermore, numerical simulations have shown
that coronal rain is a loss of thermal equilibrium of loops linked to footpoint
heating. This result has highlighted the importance that coronal rain can play
in the field of coronal heating. In this work, we further stress the importance
of coronal rain by showing the role it can play in the understanding of the
coronal magnetic field topology. We analyze \textit{Hinode}/SOT observations in
the \ion{Ca}{2} H line of a loop in which coronal rain puts in evidence
in-phase transverse oscillations of multiple strand-like structures. The
periods, amplitudes, transverse velocities and phase velocities are calculated,
allowing an estimation of the energy flux of the wave and the coronal magnetic
field inside the loop through means of coronal seismology. We discuss the
possible interpretations of the wave as either standing or propagating
torsional Alfv\'en or fast kink waves. An estimate of the plasma beta parameter
of the condensations indicates a condition that may allow the often observed
separation and elongation processes of the condensations. We also show that the
wave pressure from the transverse wave can be responsible for the observed low
downward acceleration of coronal rain.

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The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas