Lagrangian reconstruction of cosmic velocity fields

被引：6

作者：

Lavaux, Guilhem ^{[1
,2
,3
]}

机构：

[1] Inst Astrophys Paris, F-75015 Paris, France

[2] Univ Paris 06, F-75252 Paris 05, France

[3] Univ Paris 11, Orsay, France

来源：

PHYSICA D-NONLINEAR PHENOMENA | 2008年 / 237卷 / 14-17期

关键词：

cosmology; velocity field reconstruction; numerical method; statistics;

D O I：

10.1016/j.physd.2008.02.016

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We discuss a Lagrangian reconstruction method of the velocity field from galaxy redshift catalog that takes its root in the Euler equation. This results in a "functional" of the velocity field which must be minimized. This is helped by an algorithm solving the minimization of cost-flow problems. The results obtained by applying this method to cosmological problems are shown and boundary effects happening in real observational cases are then discussed. Finally, a statistical model of the errors made by the reconstruction method is proposed. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：2139 / 2144

页数：6

共 50 条

[1] Observational biases in Lagrangian reconstructions of cosmic velocity fields
Lavaux, G.
Mohayaee, R.
Colombi, S.
Tully, R. B.
Bernardeau, F.
Silk, J.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 383 (04) : 1292 - 1318
[2] Cosmic density and velocity fields in Lagrangian perturbation theory
Susperregi, M
Buchert, T
ASTRONOMY & ASTROPHYSICS, 1997, 323 (02) : 295 - 304
[3] Reconstruction of cosmological density and velocity fields in the Lagrangian Zel'dovich approximation
Croft, RAC
Gatanaga, E
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 285 (04) : 793 - 805
[4] Reconstruction of cosmological density and velocity fields in the Lagrangian Zel'dovich approximation
Department of Astronomy, Ohio State University, Columbus, OH 43210, United States
不详
不详
Mon. Not. R. Astron. Soc., 4 (793-805):
[5] Cosmic velocity fields
Simmons, JFL
THEORETICAL AND OBSERVATIONAL COSMOLOGY, 1999, 541 : 381 - 396
[6] Cosmic velocity fields.
Dekel, A
DARK MATTER IN THE UNIVERSE, 1996, 132 : 157 - 207
[7] The properties of cosmic velocity fields
Hahn, Oliver
Angulo, Raul E.
Abel, Tom
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 454 (04) : 3920 - 3937
[8] Cosmic velocity fields and their interpretation
Davis, M
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1998, 95 (01) : 78 - 81
[9] A variational approach for the reconstruction of regional scale Eulerian velocity fields from Lagrangian data
Taillandier, V
Griffa, A
Molcard, A
OCEAN MODELLING, 2006, 13 (01) : 1 - 24
[10] Wavelet analysis of cosmic velocity fields
1600, (273):

← 1 2 3 4 5 →