Typical scales in the spatial distribution of QSOs

Abstract

view Abstract Citations (15) References (47) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Typical Scales in the Spatial Distribution of QSOs Deng, Zugan ; Xia, Xiaoyang ; Fang, Li-Zhi Abstract We present results of searching for possible typical scales in the spatial distribution of QSOs. Our method is based on the second derivative of the two-point correlation function. This statistic is sensitive to the scale of the maximum in the spectrum P(k) of the density perturbation in the universe. This maximum or bend scale can be detected as the wavelengths of the periodic component in the second derivative of the integral correlation function. For various QSO samples compiled from surveys of pencil beam and bright QSOs, a typical scale of about 93 +/- 10h^-1^ Mpc for q_0_ = 0.5 has been detected. This typical scale is in good agreement with that found in the spatial distributions of galaxies, clusters of galaxies, and C IV absorption systems of QSOs if q_0_ is taken to be ~0.2. Therefore, it is likely a common or universal scale in the large-scale structure traced by these objects. This result is consistent with the assumption that the typical scale comes from a characteristic scale in the spectrum of the density perturbation in the universe. Publication: The Astrophysical Journal Pub Date: August 1994 DOI: 10.1086/174503 arXiv: arXiv:astro-ph/9402052 Bibcode: 1994ApJ...431..506D Keywords: Galactic Clusters; Galactic Evolution; Perturbation Theory; Quasars; Red Shift; Spatial Distribution; Absorption Spectra; Cosmology; Data Correlation; Pencil Beams; Power Spectra; Astrophysics; COSMOLOGY: THEORY; GALAXIES: CLUSTERING; COSMOLOGY: LARGE-SCALE STRUCTURE OF UNIVERSE; GALAXIES: QUASARS: GENERAL; Astrophysics E-Print: 16 pages, 13 figures (available upon request), Latex, AZPH-TH/94-02, to appear in Ap. J full text sources arXiv | ADS |