The Sun is our nearest star; it is also the most important star that determines life on Earth. A
large variety of phenomena observed on the Sun's surface, with potential impact on Earth, is …

The Sun's axisymmetric large-scale flows, differential rotation and meridional circulation, are
thought to be maintained by the influence of rotation on the thermal-convective motions in …

The Sun rotates differentially with a fast equator and slow pole. Convection in the solar
interior is thought to maintain the differential rotation. However, although many numerical …

We analyze the simulation result shown in Hotta & Kusano (2021) in which the solar-like
differential rotation is reproduced. The Sun is rotating differentially with the fast equator and …

In solving the solar coronal heating problem, it is crucial to comprehend the mechanisms by
which energy is conveyed from the photosphere to the corona. Recently, magnetic …

Solar-like oscillations have been detected in thousands of stars thanks to modern space
missions. These oscillations have been used to measure stellar masses and ages, which …

The physical connection between thermal convection in the solar interior and the solar wind
remains unclear due to their significant scale separation. Using an extended version of the …

We investigate the rising flux tube and the formation of sunspots in an unprecedentedly
deep computational domain that covers the whole convection zone with a radiative …

Solar activity generally exhibits cyclic behavior in terms of sunspot group number and
sunspot positions every≈ 11 yr. These sunspot data have therefore played key roles in …

Observations reveal that strong solar flares and coronal mass ejections tend to occur in
complex active regions characterized by δ-sunspots, spot rotation, sheared polarity …