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pro vyhledávání: '"Hotta H"'
In this work, we systematically investigate the scale-dependent angular momentum flux by analysing high-resolution three-dimensional magnetohydrodynamic simulations in which the solar-like differential rotation is reproduced without using any manipul
Externí odkaz:
http://arxiv.org/abs/2307.09975
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 three-dimensional radiative magnetohydrodynamic code RAMENS, we pe
Externí odkaz:
http://arxiv.org/abs/2306.17324
We investigate the dependence of the angular momentum transport (AMT) on the spatial scales with numerical simulation of solar-like stars. It is thought that turbulence has an essential role in constructing solar differential rotation (DR). In a wide
Externí odkaz:
http://arxiv.org/abs/2212.11502
Publikováno v:
ApJ 933 199 (2022)
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 the slow pole. It is widely thought that the thermal convection m
Externí odkaz:
http://arxiv.org/abs/2202.04183
Autor:
Hotta, H., Kusano, K.
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 simulations have been conducted to reproduce the solar differential
Externí odkaz:
http://arxiv.org/abs/2109.06280
Autor:
Ishizaki, K., Hotta, H., Ide, I., Iinuma, M., Iwata, T., Kitaguchi, M., Kohri, H., Miura, D., Miyachi, Y., Ohta, T., Shimizu, H. M., Yoshikawa, H., Yosoi, M.
The nuclear spin-lattice relaxation time ($T_1$) of lanthanum and aluminum nuclei in a single crystal of lanthanum aluminate doped with neodymium ions is studied to estimate the feasibility of the dynamically polarized lanthanum target applicable to
Externí odkaz:
http://arxiv.org/abs/2105.06299
We perform radiative magnetohydrodynamic calculations for the solar quiet region to investigate the dependence of statistical flow on magnetic properties and the three-dimensional (3D) structure of magnetic patches in the presence of large-scale flow
Externí odkaz:
http://arxiv.org/abs/2103.03789
Autor:
Hotta, H., Toriumi, S.
We perform a series of radiative magnetohydrodynamic simulations to understand the amplification mechanism of the exceptionally strong horizontal magnetic field in delta-type sunspots. In the simulations, we succeed in reproducing the delta-type suns
Externí odkaz:
http://arxiv.org/abs/2008.07741
Autor:
Hotta, H., Iijima, H.
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 magnetohydrodynamics simulation. Previous calculations had shallow computational
Externí odkaz:
http://arxiv.org/abs/2003.10583
The morphological asymmetry of leading and following sunspots is a well-known characteristic of the solar surface. In the context of large-scale evolution of the surface magnetic field, the asymmetry has been assumed to have only a negligible effect.
Externí odkaz:
http://arxiv.org/abs/1908.04474