Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Y. Nariyuki"'
Autor:
Y. Nariyuki
Publikováno v:
AIP Advances, Vol 13, Iss 7, Pp 075201-075201-5 (2023)
Brownian motion of charged particles in the presence of low-frequency, circularly polarized electromagnetic waves is discussed. By using the wave rest frame, the Langevin system including low-frequency waves can be treated as a periodic system with a
Externí odkaz:
https://doaj.org/article/0f7d0b1142624b42aaf0676313cb3835
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 8 (2023)
The expanding-box model of the solar wind has been adopted in the literature within the context of magnetohydrodynamics, hybrid, and full particle-in-cell simulations to investigate the dynamic evolution of the solar wind. The present paper extends s
Externí odkaz:
https://doaj.org/article/a7b85089285b4934a7c23cace60386c1
Autor:
Y. Nariyuki
Publikováno v:
AIP Advances, Vol 11, Iss 5, Pp 055005-055005-6 (2021)
As a minimal phenomenological model of unidirectional Alfvénic fluctuations in the solar wind, a non-equilibrium Alfvénic state (NAS) in the Langevin system for single particles is studied. The NAS is a nonequilibrium steady state of the Langevin s
Externí odkaz:
https://doaj.org/article/73dd08e74d1740ddb9eeb0b8fd95151d
Publikováno v:
Annales Geophysicae, Vol 36, Pp 1647-1655 (2018)
By three-dimensional hybrid simulations, proton heating is investigated starting from a monochromatic large-amplitude Alfvén wave with left-handed circular polarization launched along the mean magnetic field in a low-beta plasma. We find that the pe
Externí odkaz:
https://doaj.org/article/27986162a7f1480aba0765a777ea0032
Publikováno v:
Annales Geophysicae, Vol 34, Pp 975-984 (2016)
Competition of linear mode waves is studied numerically to understand the energy cascade mechanism in plasma turbulence on ion-kinetic scales. Hybrid plasma simulations are performed in a 3-D simulation box by pumping large-scale Alfvén waves on
Externí odkaz:
https://doaj.org/article/f47cb04aca21459ba2c332245faab95a
Publikováno v:
Nonlinear Processes in Geophysics, Vol 21, Iss 1, Pp 339-346 (2014)
The numerical simulation of the nonlinear evolution of the parallel propagating Alfvén waves in a radially expanding plasma is performed by using a kinetic-fluid model (the Vlasov–MHD model). In our study, both the nonlinear evolution of the Alfv
Externí odkaz:
https://doaj.org/article/20b3992d864c4141a4350a145efa4833
Publikováno v:
Annales Geophysicae, Vol 26, Pp 3389-3393 (2008)
We present an estimator of the bispectrum, a measure of three-wave couplings. It is evaluated directly in the wave number domain using a limited number of detectors. The ability of the bispectrum estimator is examined numerically and then it is
Externí odkaz:
https://doaj.org/article/b36090644edf43e4b9fd79df750dbe6c
Publikováno v:
Nonlinear Processes in Geophysics, Vol 14, Iss 4, Pp 361-371 (2007)
Waves in the foreshock region are studied on the basis of a hypothesis that the linear process first excites the waves and further wave-wave nonlinearities distribute scatter the energy of the primary waves into a number of daughter waves. To examine
Externí odkaz:
https://doaj.org/article/d76003be48f942ec967d0be1e7649863
Autor:
Y. Nariyuki, T. Hada
Publikováno v:
Nonlinear Processes in Geophysics, Vol 13, Iss 4, Pp 425-441 (2006)
Nonlinear relations among frequencies and phases in modulational instability of circularly polarized Alfvén waves are discussed, within the context of one dimensional, dissipation-less, unforced fluid system. We show that generation of phase coheren
Externí odkaz:
https://doaj.org/article/6ab6a7bc33bb4ba9a27d27737f028343
Publikováno v:
Physics of Plasmas. 29:034501
Pitch-angle diffusion of charged particles via non-resonant interaction with low-frequency magnetohydrodynamic waves is discussed. Even in the presence of finite amplitude waves, a quasi-linear theory in which the normalization using wave energy is c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4040c2d69bc463b7c1be0bf8ee9ba86c
https://doi.org/10.1063/5.0079286
https://doi.org/10.1063/5.0079286