Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Evolution of Inverted Magnetic Fields Through the Inner Heliosphere   Local inversions are often observed in the heliospheric magnetic field (HMF),
but their origins and evolution are not yet fully understood.Parker Solar Probe
has recently observed rapid, Alfvenic, HMF inversions in the inner heliosphere,
known as 'switchbacks', which have been interpreted as the possible remnants of
coronal jets. It has also been suggested that inverted HMF may be produced by
near-Sun interchange reconnection; a key process in mechanisms proposed for
slow solar wind release. These cases suggest that the source of inverted HMF is
near the Sun, and it follows that these inversions would gradually decay and
straighten as they propagate out through the heliosphere. Alternatively, HMF
inversions could form during solar wind transit, through phenomena such
velocity shears, draping over ejecta, or waves and turbulence. Such processes
are expected to lead to a qualitatively radial evolution of inverted HMF
structures. Using Helios measurements spanning 0.3-1 AU, we examine the
occurrence rate of inverted HMF, as well as other magnetic field morphologies,
as a function of radial distance A, and find that it continually increases.
This trend may be explained by inverted HMF observed between 0.3-1 AU being
primarily driven by one or more of the above in-transit processes, rather than
created at the Sun. We make suggestions as to the relative importance of these
different processes based on the evolution of the magnetic field properties
associated with inverted HMF. We also explore alternative explanations outside
of our suggested driving processes which may lead to the observed trend.

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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ph