The Fluctuation theory and Gravitational Galaxy Clustering

Sajad MASOOD; Shakeel A. SIMNANI and Manzoor A. MALIK

Makale detayları

The Fluctuation theory and Gravitational Galaxy Clustering

Yazarlar:

Sajad MASOOD | Shakeel A. SIMNANI and Manzoor A. MALIK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2007 Vol.31 Issue 2, pp.67-76

Belge Tipi:

Makale

Yayın Tarihi:

1/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000761172

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Anahtar kelimeler:

Cosmology - gravitation - galaxies: Clustering - method: Analytical.

Özet:

 

The description of gravitational galaxy clustering evolving  through quasi-equilibrium thermodynamics is examined on the basis of  thermodynamic fluctuations and statistical mechanical ensemble  techniques.  Second order fluctuation moments lead to an ordinary  differential equation for b(nT-3), ratio of gravitational  correlation energy to (twice) the kinetic energy of peculiar  velocities.  The general solution of the differential equation gives a  functional form of b in terms of a scale invariant function nT-3,  in conformity with the earlier results.  A method for finding analytic  expression for probability distribution function f(N) of gravitational  clustering in a expanding universe is also developed on the basis of  ensemble theory.  The results can provide a deeper understanding of  gravitational clustering on the basis of statistical mechanics.

 

The description of gravitational galaxy clustering evolving  through quasi-equilibrium thermodynamics is examined on the basis of  thermodynamic fluctuations and statistical mechanical ensemble  techniques.  Second order fluctuation moments lead to an ordinary  differential equation for b(nT-3), ratio of gravitational  correlation energy to (twice) the kinetic energy of peculiar  velocities.  The general solution of the differential equation gives a  functional form of b in terms of a scale invariant function nT-3,  in conformity with the earlier results.  A method for finding analytic  expression for probability distribution function f(N) of gravitational  clustering in a expanding universe is also developed on the basis of  ensemble theory.  The results can provide a deeper understanding of  gravitational clustering on the basis of statistical mechanics.

Makale detayları

The Fluctuation theory and Gravitational Galaxy Clustering

Yazarlar: Sajad MASOOD | Shakeel A. SIMNANI and Manzoor A. MALIK

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2007 Vol.31 Issue 2, pp.67-76

Belge Tipi: Makale

Yayın Tarihi: 1/2007

Belge Dili: Türkçe

Document ID (Org No.): 2000761172

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Cosmology - gravitation - galaxies: Clustering - method: Analytical.

Sayı

Yazarlar:

Sajad MASOOD | Shakeel A. SIMNANI and Manzoor A. MALIK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2007 Vol.31 Issue 2, pp.67-76

Belge Tipi:

Makale

Yayın Tarihi:

1/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000761172

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101