Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Romain Meyrand"'
Autor:
Trevor A. Bowen, Ivan Y. Vasko, Stuart D. Bale, Benjamin D. G. Chandran, Alexandros Chasapis, Thierry Dudok de Wit, Alfred Mallet, Michael McManus, Romain Meyrand, Marc Pulupa, Jonathan Squire
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L8 (2024)
Circularly polarized, nearly parallel propagating waves are prevalent in the solar wind at ion-kinetic scales. At these scales, the spectrum of turbulent fluctuations in the solar wind steepens, often called the transition range, before flattening at
Externí odkaz:
https://doaj.org/article/99d42b9db0dd4027a7461f97588a941d
Publikováno v:
The Astrophysical Journal Letters, Vol 957, Iss 2, p L30 (2023)
A likely candidate mechanism to heat the solar corona and solar wind is low-frequency “Alfvénic” turbulence sourced by magnetic fluctuations near the solar surface. Depending on its properties, such turbulence can heat different species via diff
Externí odkaz:
https://doaj.org/article/5fd4a0b5a1a449748bbc74abc81d9d4b
Autor:
Jonathan Squire, Romain Meyrand, Matthew W. Kunz, Lev Arzamasskiy, Alexander A. Schekochihin, Eliot Quataert
The fast solar wind's high speeds and nonthermal features require that significant heating occurs well above the Sun's surface. Two leading theories seem incompatible: low-frequency "Alfv\'enic" turbulence, which transports energy outwards and is obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaf97df683b25ec3c0cef246ee996b3b
https://ora.ox.ac.uk/objects/uuid:877459b8-2fd8-4ddc-8162-7c054be0e008
https://ora.ox.ac.uk/objects/uuid:877459b8-2fd8-4ddc-8162-7c054be0e008
Autor:
Trevor A. Bowen, Benjamin D. G. Chandran, Jonathan Squire, Stuart D. Bale, Die Duan, Kristopher G. Klein, Davin Larson, Alfred Mallet, Michael D. McManus, Romain Meyrand, Jaye L. Verniero, Lloyd D. Woodham
Publikováno v:
Physical review letters. 129(16)
The dissipation of magnetized turbulence is an important paradigm for describing heating and energy transfer in astrophysical environments such as the solar corona and wind; however, the specific collisionless processes behind dissipation and heating
Publikováno v:
Physical Review X, Vol 8, Iss 3, p 031066 (2018)
We report a numerical investigation of three-dimensional, incompressible, Hall magnetohydrodynamic turbulence with a relatively strong mean magnetic field. Using helicity decomposition and cross-bicoherence analysis, we observe that the resonant thre
Externí odkaz:
https://doaj.org/article/59264c62d1804fe39d1044831d6a40b0
Recent near-Sun solar-wind observations from Parker Solar Probe have found a highly dynamic magnetic environment, permeated by abrupt radial-field reversals, or "switchbacks." We show that many features of the observed turbulence are reproduced by a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f223778d0c4b7bcc2d0fb8bd8e0ba85
http://arxiv.org/abs/2001.08422
http://arxiv.org/abs/2001.08422
Autor:
Nahuel Andrés, Supratik Banerjee, Romain Meyrand, Fouad Sahraoui, Sébastien Galtier, R. Ferrand
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2019, 881 (1), pp.50. ⟨10.3847/1538-4357/ab2be9⟩
The Astrophysical Journal, American Astronomical Society, 2019, 881 (1), pp.50. ⟨10.3847/1538-4357/ab2be9⟩
A comparison is made between several existing exact laws in incompressible Hall magnetohydrodynamic (IHMHD) turbulence in order to show their equivalence, despite stemming from different mathematical derivations. Using statistical homogeneity, we rev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35cfcbee36156d0d71eaca7ea947d738
https://hal.archives-ouvertes.fr/hal-02407721
https://hal.archives-ouvertes.fr/hal-02407721
Publikováno v:
Proceedings of the National Academy of Sciences
In a collisionless, magnetized plasma, particles may stream freely along magnetic field lines, leading to “phase mixing” of their distribution function and consequently, to smoothing out of any “compressive” fluctuations (of density, pressure
Publikováno v:
Physical Review X
Physical Review X, American Physical Society, 2018, 8 (3), pp.031066. ⟨10.1103/PhysRevX.8.031066⟩
Physical Review X, Vol 8, Iss 3, p 031066 (2018)
Physical Review X, American Physical Society, 2018, 8 (3), pp.031066. ⟨10.1103/PhysRevX.8.031066⟩
Physical Review X, Vol 8, Iss 3, p 031066 (2018)
International audience; We report a numerical investigation of three-dimensional, incompressible, Hall magnetohydrodynamic turbulence with a relatively strong mean magnetic field. Using helicity decomposition and cross-bicoherence analysis, we observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c41234e3ae79c076c89bed0b49e01f98
Publikováno v:
Journal of Fluid Mechanics
Journal of Fluid Mechanics, 2015, 770, ⟨10.1017/jfm.2015.141⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2015, 770, ⟨10.1017/jfm.2015.141⟩
Journal of Fluid Mechanics, 2015, 770, ⟨10.1017/jfm.2015.141⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2015, 770, ⟨10.1017/jfm.2015.141⟩
Three-dimensional numerical simulation is used to investigate intermittency in incompressible weak magnetohydrodynamic turbulence with a strong uniform magnetic field $\boldsymbol{b}_{\mathbf{0}}$ and zero cross-helicity. At leading order, this asymp