High redshift AGNs from the 1Jy catalogue and the magnification bias

Abstract

We have found a statistically significant (99.1 \%) excess of red ($O-E>2$) galaxies with photographic magnitudes $E<19.5$, $O<21$ taken from the APM Sky Catalogue around $z\sim 1$ radiosources from the 1Jy catalogue. The amplitude, scale and dependence on galaxy colours of the observed overdensity are consistent with its being a result of the magnification bias caused by the weak gravitational lensing of large scale structures at redshift $z\approx 0.2-0.4$ and are hardly explained by other causes, as obscuration by dust.

uuencoded file containing 3 ps files: the main text, a table and a figure. To appear in ApJ Letters

References in corpus (2)

• R-Band Imaging of Fields Around 1<z<2 Radiogalaxies
• Quasar-galaxy associations

Cited by in corpus (10)

• Weak Gravitational Lensing
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• Cosmological Information from Quasar-Galaxy Correlations induced by Weak Lensing
• Improving the Accuracy of Cosmic Magnification Statistics
• Measuring Omega_0 with higher-order Quasar-Galaxy Correlations induced by Weak Lensing
• Correlation between galaxies and QSO in the SDSS:na signal from gravitational lensing magnification?
• Large Scale QSO-galaxy correlations for radio loud and optically selected QSO samples
• Weak Lensing Induced Correlations Between 1 Jy QSOs and APM Galaxies on Angular Scales of a Degree
• Cosmological Applications of Gravitational Lensing
• Large-Scale QSO-Galaxy Correlations and Weak Lensing