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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/55961
- Angular clustering in the Sydney University Molonglo Sky Survey
- Blake, Chris; Mauch, Tom; Sadler, Elaine M.
- We measure the angular correlation function of radio galaxies selected by the 843-MHz Sydney University Molonglo Sky Survey (SUMSS). We find that the characteristic imprint of large-scale structure is clearly detectable and that the survey is very uniform. Through comparison with similar analyses for other wide-area radio surveys – the 1400-MHz National Radio Astronomy Observatories Very Large Array Sky Survey (NVSS) and the 325-MHz Westerbork Northern Sky Survey – we are able to derive consistent angular clustering parameters, including a steep slope for the clustering function, w(θ) ∝θ−1.1 . We revise upwards previous estimates of the NVSS clustering amplitude, and find no evidence for dependence of clustering properties on radio frequency. It is important to incorporate the full covariance matrix when fitting parameters to the measured correlation function. Once the redshift distribution for mJy radio galaxies has been determined, these projected clustering measurements will permit a robust description of large-scale structure at z∼ 0.8 , the median redshift of the sources.
- Publication type
- Journal article
- Monthly Notices of the Royal Astronomical Society, Vol. 347, no. 3 (Jan 2004), pp. 787-794
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences
- Active galaxies; Galaxies; Large-scale structure of Universe; NRAO VLA Sky Survey; NVSS; SUMSS; Surveys; Sydney University Molonglo Sky Survey
- Publisher URL
- Copyright © 2004 Royal Astronomical Society.
- Peer reviewed