Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Noullez, A."'
Autor:
Noullez, A., Tsiganis, K.
Publikováno v:
In Advances in Space Research 1 January 2021 67(1):477-495
Publikováno v:
Astrophysical J., vol. 811, 135, 2015
The generation of large-scale magnetic field in the kinematic regime in the absence of an alpha-effect is investigated by following two different approaches, namely the test-field method and multiscale stability theory relying on the homogenisation t
Externí odkaz:
http://arxiv.org/abs/1501.04465
Publikováno v:
Rhys. Rev. Lett. 103, 061102, 2009
Incompressible and isotropic magnetohydrodynamic turbulence in plasms can be described by an exact relation for the energy flux through the scales. This Yaglom-like scaling law has been recently observed in the solar wind above the solar poles observ
Externí odkaz:
http://arxiv.org/abs/1003.0533
The goal of the present paper is the investigation of the evolution of anisotropic regular structures and turbulence at large Reynolds number in the multi-dimensional Burgers equation. We show that we have local isotropization of the velocity and pot
Externí odkaz:
http://arxiv.org/abs/0808.2757
Autor:
Sorriso-Valvo, Luca, Marino, Raffaele, Carbone, Vincenzo, Lepreti, Fabio, Veltri, Pierluigi, Noullez, Alain, Bruno, Roberto, Bavassano, Bruno, Pietropaolo, Ermanno
Publikováno v:
Phys.Rev.Lett.99:115001,2007
We show in this article direct evidence for the presence of an inertial energy cascade, the most characteristic signature of hydromagnetic turbulence (MHD), in the solar wind as observed by the Ulysses spacecraft. After a brief rederivation of the eq
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702264
Autor:
Bruno, Roberto, Carbone, Vincenzo, Chapman, Sandra, Hnat, Bogdan, Noullez, Alain, Sorriso-Valvo, Luca
Interplanetary magnetic field magnitude fluctuations are notoriously more intermittent than velocity fluctuations in both fast and slow wind. This behaviour has been interpreted in terms of the anomalous scaling observed in passive scalars in fully d
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702114
This paper continue earlier investigations on the decay of Burgers turbulence in one dimension from Gaussian random initial conditions of the power-law spectral type $E_0(k)\sim|k|^n$. Depending on the power $n$, different characteristic regions are
Externí odkaz:
http://arxiv.org/abs/nlin/0409022
We present an efficient and parsimonious algorithm to solve mixed initial/final-value problems. The algorithm optimally limits the memory storage and the computational time requirements: with respect to a simple forward integration, the cost factor i
Externí odkaz:
http://arxiv.org/abs/physics/0305058
Autor:
Sorriso-Valvo, L., Carbone, V., Abramenko, V., Yurchyshyn, V., Noullez, A., Politano, H., Pouquet, A., Veltri, P.
The observations of magnetic field variations as a signature of flaring activity is one of the main goal in solar physics. Some efforts in the past give apparently no unambiguous observations of changes. We observed that the scaling laws of the curre
Externí odkaz:
http://arxiv.org/abs/astro-ph/0207244
A signed measure analysis of two-dimensional intermittent magnetohydrodynamic turbulence is presented. This kind of analysis is performed to characterize the scaling behavior of the sign-oscillating flow structures, and their geometrical properties.
Externí odkaz:
http://arxiv.org/abs/nlin/0111053