ar X iv : a st ro - p h / 02 09 20 8 v 1 1 1 Se p 20 02 Clustering statistics in cosmology

ar X iv : a st ro - p h / 02 09 20 8 v 1 11 S ep 2 00 2 Clustering statistics in cosmology Vicent

The main tools in cosmology for comparing theoretical models with the observations of the galaxy distribution are statistical. We will review the applications of spatial statistics to the description of the large-scale structure of the universe. Special topics discussed in this talk will be: description of the galaxy samples, selection effects and biases, correlation functions, Fourier analysis...

ar X iv : a st ro - p h / 02 09 41 6 v 1 1 9 Se p 20 02 Planet migration

A planetary system may undergo significant radial rearrangement during the early part of its lifetime. Planet migration can come about through interaction with the surrounding planetesimal disk and the gas disk—while the latter is still present—as well as through planet-planet interactions. We review the major proposed migration mechanisms in the context of the planet formation process, in our ...

ar X iv : a st ro - p h / 02 09 29 4 v 1 1 6 Se p 20 02 CLUSTERING EVOLUTION BETWEEN Z = 1 AND TODAY

We present results of an investigation of clustering evolution of field galaxies between a redshift of z ∼ 1 and the present epoch. The current analysis relies on a sample of ∼ 14000 galaxies in two fields of the COMBO 17 survey. The redshift distribution extends to z ∼ 1. The amplitude of the three-dimensional correlation function can be estimated by means of the projected correlation function...

ar X iv : a st ro - p h / 02 09 36 9 v 1 1 8 Se p 20 02 Post - outburst radio spectral evolution of Cygnus X - 3

Multifrequency VLA and OVRO observations of the radio outburst of Cygnus X-3 in September 2001 are presented, illustrating the evolution of the spectrum of the source over a period of six days. An estimate of the magnetic field in the emitting region is made from the spectral turnover and possible explanations for the spectral evolution are suggested.

ar X iv : h ep - e x / 02 09 04 3 v 1 1 8 Se p 20 02 1 Elementary Hadronic Interactions at the CERN SPS