Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Benchmarking Fast-to-Alfv\'en Mode Conversion in a Cold MHD Plasma. II.
  How to get Alfv\'en waves through the Solar Transition Region   Alfv\'en waves may be difficult to excite at the photosphere due to low
ionization fraction and suffer near-total reflection at the transition region
(TR). Yet they are ubiquitous in the corona and heliosphere. To overcome these
difficulties, we show that they may instead be generated high in the
chromosphere by conversion from reflecting fast magnetohydrodynamic waves, and
that Alfv\'enic transition region reflection is greatly reduced if the fast
reflection point is within a few scale heights of the TR. The influence of mode
conversion on the phase of the reflected fast wave is also explored. This phase
can potentially be misinterpreted as a travel speed perturbation, with
implications for the practical seismic probing of active regions.

16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex