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Correlation function of quasars from SDSS DR3

  • Extragalactic Astronomy
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Abstract

We calculate the parameters of the two-point correlation function of quasars w(r) = (r c /r)γ on the basis of the SDSS DR3 data. The correlation functions are first determined from projected distances with the use of a special technique for compiling randomized catalogs. Next the parameters of the spatial correlation function are obtained with the assumption of local isotropy. For the quasars with redshifts z = 0.8–2.1, we obtained the estimates γ = 1.76 ± 0.14, r c = 6.60 ± 0.85 h −1 Mpc in the comoving distance range 2–30 Mpc and γ = 1.90 ± 0.11, r c = 6.95±0.57 h −1 Mpc in the range 2–50 Mpc. These estimates agree, within the limits of errors, with the estimates obtained for the redshifts 0.4 < z < 2.1. The original catalog shows some deficit of pairs with separations less than 1 Mpc.

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Authors and Affiliations

  1. Taras Shevchenko Kyiv National University, pr. Akademika Glushkova 2, Kyiv, 03127, Ukraine

    V. I. Zhdanov & A. Yu. Ivashchenko

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  1. V. I. Zhdanov
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  2. A. Yu. Ivashchenko
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Original Russian Text © V.I. Zhdanov, A.Yu. Ivashchenko, 2008, published in Kinematika i Fizika Nebesnykh Tel, 2008, Vol. 24, No. 1, pp. 3–14.

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Zhdanov, V.I., Ivashchenko, A.Y. Correlation function of quasars from SDSS DR3. Kinemat. Phys. Celest. Bodies 24, 1–9 (2008). https://doi.org/10.1007/s11963-008-1001-y

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  • DOI: https://doi.org/10.1007/s11963-008-1001-y

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