One obvious feature of the solar cycle is its variation from one cycle to another. In this article,
we review the dynamo models for the long-term variations of the solar cycle. By long-term …

Recent advances in the field of complex, transiently chaotic dynamics are reviewed, based
on the results published in the focus issue of J. Phys. Complex. on this topic. One group of …

Recent observations have revealed the surprising breakdown of stellar gyrochronology
relations at about the age of the Sun hinting the middle-aged, solar-like stars transition to a …

Abstract In the Sun and Sun-like stars, it is believed that cycles of the large-scale magnetic
field are produced due to the existence of differential rotation and helicity in the plasma flows …

The magnetised spherical Couette (MSC) problem, a three dimensional
magnetohydrodynamic paradigmatic model in geo-and astrophysics, is considered to …

Transition to chaos and magnetic field generation are investigated in numerical simulations
of three-dimensional rotating Rayleigh-Bénard convection. The behavior of the system is …

Hydrodynamic and magnetohydrodynamic convective attractors in three-dimensional
rotating Rayleigh-B\'enard convection are studied numerically by varying the Taylor and …

In the Sun and solar-type stars, there is a critical dynamo number for the operation of a large-
scale dynamo, below which the dynamo ceases to operate. This region is known as the …