Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Nuno F. Loureiro"'
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 12 (2023)
We report on a first-principles numerical and theoretical study of plasma dynamo in a fully kinetic framework. By applying an external mechanical force to an initially unmagnetized plasma, we develop a self-consistent treatment of the generation of
Externí odkaz:
https://doaj.org/article/1dfe795c53a54e78b0951a376947afaf
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
Recent in situ measurements by the MMS and Parker Solar Probe missions bring interest to small-scale plasma dynamics (waves, turbulence, magnetic reconnection) in regions where the electron thermal energy is smaller than the magnetic one. Examples of
Externí odkaz:
https://doaj.org/article/2c647dfbe50a4dac94d5bf7c9e3ed01a
Publikováno v:
Physical Review Research, Vol 1, Iss 1, p 012004 (2019)
Magnetic energy transfer from small to large scales due to successive magnetic island coalescence is investigated. A solvable analytical model is introduced and shown to correctly capture the evolution of the main quantities of interest, as borne out
Externí odkaz:
https://doaj.org/article/9f388ec22ee44a71a5c1c2124d0445bf
Autor:
Stanislav Boldyrev, Nuno F. Loureiro
Publikováno v:
Physical Review Research, Vol 1, Iss 1, p 012006 (2019)
In a weakly collisional, low-electron-beta plasma, large-scale Alfvén turbulence transforms into inertial kinetic-Alfvén turbulence at scales smaller than the ion microscale (gyroscale or inertial scale). We propose that at such kinetic scales, the
Externí odkaz:
https://doaj.org/article/156d8866deb34397904251cb2f354466
Publikováno v:
Proceedings of the National Academy of Sciences. 119
Significance Astronomical observations indicate that dynamically important magnetic fields are ubiquitous in the Universe, while their origin remains a profound mystery. This work provides a paradigm for understanding the origin of cosmic magnetism b
We report analytical and numerical investigations of sub-ion scale turbulence in weakly collisional, low beta plasmas using a hybrid fluid-kinetic model. In the isothermal limit, the same scalings for the energy spectrum and for the eddy anisotropy c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0871585046ffa56e5bd02dc1cd558c2a
https://doi.org/10.5194/egusphere-egu22-13243
https://doi.org/10.5194/egusphere-egu22-13243
Publikováno v:
Physical Review A
Physical Review A, 2022, 106 (3), pp.032408. ⟨10.1103/PhysRevA.106.032408⟩
Physical Review A, 2022, 106 (3), pp.032408. ⟨10.1103/PhysRevA.106.032408⟩
International audience; Developing numerical methods to simulate efficiently nonlinear fluid dynamics on universal quantum computers is a challenging problem. In this paper, a generalization of the Madelung transform is defined to solve quantum relat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fd3a9cabac248c6971499c68957f973
https://hal.science/hal-03822915
https://hal.science/hal-03822915
The physical picture of interacting magnetic islands provides a useful paradigm for certain plasma dynamics in a variety of physical environments, such as the solar corona, the heliosheath, and the Earth's magnetosphere. In this work, we derive an is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff218a318952c49c1a87f4dc94ae3f58
http://arxiv.org/abs/2104.13757
http://arxiv.org/abs/2104.13757
In Navier-Stokes turbulence, energy and helicity injected at large scales are subject to a joint direct cascade, with both quantities exhibiting a spectral scaling $\propto k^{-5/3}$. We demonstrate via direct numerical simulations that the two casca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b89a627498aa91453b6b0376306b6e23
Autor:
Nuno F. Loureiro, Stanislav Boldyrev
Publikováno v:
Astrophysical Journal; 2/10/2020, Vol. 890 Issue 1, p1-1, 1p