GALAXIES;
CLUSTERING;
LARGE-SCALE STRUCTURE OF UNIVERSE;
METHODS;
NUMERICAL;
VIDEOTAPES;
D O I:
10.1086/171518
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
We present results of applying percolation analysis to several two-dimensional N-body models which simulate the formation of large-scale structure. Three parameters are estimated: total area (a(c)), total mass (M(c)), and percolation density (rho(c)) of the percolating structure at the percolation threshold for both unsmoothed and smoothed (with different scales L(s)) nonlinear density fields. We found that the power-law models with n = 0 in two dimensions show a clear signal associated with filamentary structures, confirming early speculations that this type of model has several features of filamentary-type distributions. Also, we have shown that by properly applying smoothing techniques, many problems previously considered detrimental can be dealt with and overcome. We discuss possible difficulties and prospects with the use of this method, specifically relating to techniques and methods already applied to CfA deep sky surveys. The success of this test in two dimensions and the potential for extrapolation to three dimensions is also discussed.
机构:
Tartu Astrophysical Observatory, Toravere,202444, Estonia
European Southern Observatory, 8046, Garching, Germany
Institute of Astronomy, Cambridge,CB3 0HA, United Kingdom
Department of Astronomy, UCLA, Los Angeles,CA,90024, United StatesTartu Astrophysical Observatory, Toravere,202444, Estonia
Einasto, Jaan
Klypin, Anatoli A.
论文数: 0引用数: 0
h-index: 0
机构:
Keldysh Institute of Applied Mathematics, Miusskaya Sq. 4, Moscow,125047, RussiaTartu Astrophysical Observatory, Toravere,202444, Estonia
Klypin, Anatoli A.
Saar, Enn
论文数: 0引用数: 0
h-index: 0
机构:
Tartu Astrophysical Observatory, Toravere,202444, Estonia
Yale University, Department of Astronomy, PO Box 6666, New Haven,CT,06511, United StatesTartu Astrophysical Observatory, Toravere,202444, Estonia
Saar, Enn
Shandarin, Sergei F.
论文数: 0引用数: 0
h-index: 0
机构:
Institute of Astronomy, Cambridge,CB3 0HA, United Kingdom
Keldysh Institute of Applied Mathematics, Miusskaya Sq. 4, Moscow,125047, RussiaTartu Astrophysical Observatory, Toravere,202444, Estonia
机构:
Tartu Astrophysical Observatory, Toravere,202444, Estonia
European Southern Observatory, 8046, Garching, Germany
Institute of Astronomy, Cambridge,CB3 0HA, United Kingdom
Department of Astronomy, UCLA, Los Angeles,CA,90024, United StatesTartu Astrophysical Observatory, Toravere,202444, Estonia
Einasto, Jaan
Klypin, Anatoli A.
论文数: 0引用数: 0
h-index: 0
机构:
Keldysh Institute of Applied Mathematics, Miusskaya Sq. 4, Moscow,125047, RussiaTartu Astrophysical Observatory, Toravere,202444, Estonia
Klypin, Anatoli A.
Saar, Enn
论文数: 0引用数: 0
h-index: 0
机构:
Tartu Astrophysical Observatory, Toravere,202444, Estonia
Yale University, Department of Astronomy, PO Box 6666, New Haven,CT,06511, United StatesTartu Astrophysical Observatory, Toravere,202444, Estonia
Saar, Enn
Shandarin, Sergei F.
论文数: 0引用数: 0
h-index: 0
机构:
Institute of Astronomy, Cambridge,CB3 0HA, United Kingdom
Keldysh Institute of Applied Mathematics, Miusskaya Sq. 4, Moscow,125047, RussiaTartu Astrophysical Observatory, Toravere,202444, Estonia