THE LARGE-SCALE DISTRIBUTION OF RADIO-SOURCES

Citation
Mj. Drinkwater et Rw. Schmidt, THE LARGE-SCALE DISTRIBUTION OF RADIO-SOURCES, Publications of the Astronomical Society of Australia, 13(2), 1996, pp. 127-131
Citations number
15
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
13233580
Volume
13
Issue
2
Year of publication
1996
Pages
127 - 131
Database
ISI
SICI code
1323-3580(1996)13:2<127:TLDOR>2.0.ZU;2-E
Abstract
We have used a sample of 263 Parkes half-Jansky flat-spectrum radio so urces to measure the spatial correlation function of radio galaxies an d radio-loud quasars on scales up to 1000 h(-1) Mpc. We do not detect any clustering in the sample. If any undetected clustering is describe d by a power-law spatial correlation function [xi(tau) = (tau/tau(0))( -1.8)], we can rule out clustering with scales tau(0) greater than or equal to 50 h(-1) Mpc at the 99.9% confidence level. We have also used the sample to test for the 'possible' large concentration of quasars in the direction of the microwave background dipole found by Shaver (1 987). There is no evidence for such a concentration in our data and we show that the earlier result was probably biased by the use of non-un iform image classifications.