15 papers
The zero-crossing scale and the problem of galaxy bias
Francesco Sylos Labini
One of the main problems in the studies of large scale galaxy structures concerns the relation of the correlation properties of a certain population of objects with those of a sele…
Initial conditions, Discreteness and non-linear structure formation in cosmology
Francesco Sylos Labini, Thierry Baertschiger, Andrea Gabrielli +1
In this lecture we address three different but related aspects of the initial continuous fluctuation field in standard cosmological models. Firstly we discuss the properties of the…
Correlation and clustering
Francesco Sylos Labini, Andrea Gabrielli
In this lecture we clarify the basic difference between the correlation properties for systems characterized by small or large fluctuations. The concepts of correlation length, hom…
Persistent fluctuations and scaling properties in galaxy number counts
Francesco Sylos Labini, Andrea Gabrielli
Counts of galaxies as a function of apparent magnitude are among the most time-honored observations in cosmology. In this Letter, we focus on some statistical properties of these c…
Fractal structures and the large scale distribution of galaxies
Luciano Pietronero, Francesco Sylos Labini
Galaxy structures are certainly fractal up to a certain crossover scale λ_0. A clear determination of such a scale is still missing. Usually, the conceptual and practical implicati…
Reconstructing the cosmological puzzle
Luciano Pietronero, Francesco Sylos Labini
In the debate about galaxy correlation there are different questions which can be addressed separately: Which are the statistical methods able to properly detect scale invariance a…