Zobrazeno 1 - 10
of 438
pro vyhledávání: '"Arad, I"'
Autor:
Arad, I., Johansson, P. H.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 362 (2005) 252-262
Using N-body simulations with a large set of massless test particles we compare the predictions of two theories of violent relaxation, the well known Lynden-Bell theory and the more recent theory by Nakamura. We derive ``weaken'' versions of both the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501619
Autor:
Arad, I., Lynden-Bell, D.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 361 (2005) 385-395
We examine an inconsistency in theories of violent-relaxation by Lynden-Bell and Nakamura. The inconsistency arises from the non-transitive nature of these theories: a system that under goes a violent-relaxation, relaxes and then upon an addition of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409728
Publikováno v:
Mon.Not.Roy.Astron.Soc. 353 (2004) 15
We present a method for computing the 6-dimensional coarse-grained phase-space density $f(x,v)$ in an N-body system, and derive its distribution function $v(f)$. The method is based on Delaunay tessellation, where $v(f)$ is obtained with an effective
Externí odkaz:
http://arxiv.org/abs/astro-ph/0403135
We address the statistical theory of fields that are transported by a turbulent velocity field, both in forced and in unforced (decaying) experiments. We propose that with very few provisos on the transporting velocity field, correlation functions of
Externí odkaz:
http://arxiv.org/abs/nlin/0104027
Autor:
Arad, I., Procaccia, I.
We discuss the scaling exponents characterizing the power-law behavior of the anisotropic components of correlation functions in turbulent systems with pressure. The anisotropic components are conveniently labeled by the angular momentum index $\ell$
Externí odkaz:
http://arxiv.org/abs/nlin/0011026
Autor:
Arad, I., Procaccia, I.
The problem of anomalous scaling in passive scalar advection, especially with $\delta$-correlated velocity field (the Kraichnan model) has attracted a lot of interest since the exponents can be computed analytically in certain limiting cases. In this
Externí odkaz:
http://arxiv.org/abs/nlin/0001067
We address the scaling behavior of the covariance of the magnetic field in the three-dimensional kinematic dynamo problem when the boundary conditions and/or the external forcing are not isotropic. The velocity field is gaussian and $\delta$-correlat
Externí odkaz:
http://arxiv.org/abs/chao-dyn/9909020
We address scaling in inhomogeneous and anisotropic turbulent flows by decomposing structure functions into their irreducible representation of the SO(3) symmetry group which are designated by $j,m$ indices. Employing simulations of channel flows wit
Externí odkaz:
http://arxiv.org/abs/chao-dyn/9903013
Autor:
Kialy, A. 1, Amiaz, R. 1, 2, Arad, I. 1, Bartal, A. 3, Bloemhof-Bris, E. 4, Cohen, P. 3, Daher, Q. 1, Davidson, M. 5, 6, Davis, J. 7, Sinay, M. Har 8, Itzhaky, L. 8, 9, Krivoy, A. 2, 8, Levanon, O. 1, Meretyk-Partush, D. 10, Noy, A. 1, Rubinstein, K. 1, Shelef, A. 2, 4, Zalsman, G. 2, 8, Weiser, M. 1, 2
Publikováno v:
In Neuroscience Applied 2024 3 Supplement 2
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