Quantifying angular clustering in wide-area radio surveys

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/58559

Title: Quantifying angular clustering in wide-area radio surveys
Author(s): Blake, Chris; Wall, Jasper
Abstract: We quantify the angular clustering of radio galaxies in the NVSS and FIRST surveys using the two-point correlation function and the moments of counts-in-cells – both important points of comparison with theory. These investigations consistently demonstrate that the slope of the correlation function for radio galaxies agrees with that for optically selected galaxies, γ ≈1.8. We describe how to disentangle the imprint of galaxy clustering from the two observational problems: resolution of radio galaxies into multiple components and gradients in source surface density induced by difficulties in processing ‘snapshot’ radio observations (significant in both surveys below S1.4 GHz ∼15 mJy). This study disagrees in some respects with previous analyses of the angular clustering of radio galaxies.
Publication type: Journal article
Source: Monthly Notices of the Royal Astronomical Society, Vol. 337, no. 3 (Dec 2002), pp. 993-1003
Publication year: 2002
FOR Code(s): 0201 Astronomical and Space Sciences
Keyword(s): Angular clustering; Large scale structure; Radio galaxies
Publisher: Wiley-Blackwell Publishing
ISSN: 0035-8711
Publisher URL: http://dx.doi.org/10.1046/j.1365-8711.2002.05979.x
Peer reviewed