Galaxy distribution and extreme-value statistics (Articolo in rivista)

Type
Label
  • Galaxy distribution and extreme-value statistics (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1209/0295-5075/88/59001 (literal)
Alternative label
  • T. Antal (1); F. Sylos Labini (2,3); N.L. Vasilyev (4); Y.V. Baryshev (4) (2009)
    Galaxy distribution and extreme-value statistics
    in Europhysics letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • T. Antal (1); F. Sylos Labini (2,3); N.L. Vasilyev (4); Y.V. Baryshev (4) (literal)
Pagina inizio
  • 59001 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0295-5075/88/5/59001/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 88 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Program for Evolutionary Dynamics, Harvard University - Cambridge, MA 02138, USA (2) Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi - Piazzale del Viminale 1, 00184 Rome, Italy, EU (3) Istituto dei Sistemi Complessi CNR - Via dei Taurini 19, 00185 Rome, Italy, EU (4) Institute of Astronomy, St. Petersburg State University - Staryj Peterhoff, 198504, St. Petersburg, Russia (literal)
Titolo
  • Galaxy distribution and extreme-value statistics (literal)
Abstract
  • We consider the conditional galaxy density around each galaxy, and study its fluctuations in the newest samples of the Sloan Digital Sky Survey Data Release 7. Over a large range of scales, both the average conditional density and its variance show a non-trivial scaling behavior, which resembles criticality. The density depends, for 10?r?80 Mpc/h, only weakly (logarithmically) on the system size. Correspondingly, we find that the density fluctuations follow the Gumbel distribution of extreme-value statistics. This distribution is clearly distinguishable from a Gaussian distribution, which would arise for a homogeneous spatial galaxy configuration. We also point out similarities between the galaxy distribution and critical systems of statistical physics. (literal)
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