Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Helicity transport from solar convection zone to interplanetary space   Magnetic helicity is a physical quantity that describes field topology. It is
also a conserved quantity as Berger in 1984 demonstrated that the total
magnetic helicity is still conserved in the corona even when there is a fast
magnetic reconnection. It is generally believed that solar magnetic fields,
together with their helicity, are created in the convection zone by various
dynamo processes. These fields and helicity are transported into the corona
through solar photosphere and finally released into the interplanetary space
via various processes such as coronal mass ejections (CMEs) and solar winds.
Here I will give a brief review on our recent works, first on helicity
observations on the photosphere and how to understand these observations via
dynamo models. Mostly, I will talk about what are the possible consequences of
magnetic helicity accumulation in the corona, namely, the formation of magnetic
flux ropes, CMEs taking place as an unavoidable product of coronal evolution,
and flux emergences as a trigger of CMEs. Finally, I will address on in what a
form magnetic field in the interplanetary space would accommodate a large
amount of magnetic helicity that solar dynamo processes have been continuously
producing.

29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: q-fin
2
The categories of this paper are: math