Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Subcritical dynamo and hysteresis in a Babcock-Leighton type kinematic
  dynamo model   In Sun and sun-like stars, it is believed that the cycles of the large-scale
magnetic field are produced due to the existence of differential rotation and
helicity in the plasma flows in their convection zones (CZs). Hence, it is
expected that for each star, there is a critical dynamo number for the
operation of a large-scale dynamo. As a star slows down, it is expected that
the large-scale dynamo ceases to operate above a critical rotation period. In
our study, we explore the possibility of the operation of the dynamo in the
subcritical region using the Babcock--Leighton type kinematic dynamo model. In
some parameter regimes, we find that the dynamo shows hysteresis behavior,
i.e., two dynamo solutions are possible depending on the initial parameters --
decaying solution if started with weak field and strong oscillatory solution
(subcritical dynamo) when started with a strong field. However, under large
fluctuations in the dynamo parameter, the subcritical dynamo mode is unstable
in some parameter regimes. Therefore, our study supports the possible existence
of subcritical dynamo in some stars which was previously shown in a mean-field
dynamo model with distributed $\alpha$ and MHD turbulent dynamo simulations.

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The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th