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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4383

Title: Alignment of distant radio sources
Authors: Kapahi, V.K.
Subrahmanyan, Ravi
Singal, Ashok K.
Keywords: Alignment
Confidence Limits
Extragalactic Radio Sources
Spatial Distribution
Astrometry
Cosmology
Gravitational Lenses
Quasars
Red Shift
Universe
Issue Date: 7-Feb-1985
Publisher: Nature Publishing Group
Citation: Nature, 1985, Vol.313, p463
Abstract: The relative orientation of the axes of extragalactic extended radio sources was first investigated by Willson, who noted that in the 3CR sample there was a tendency for the axes to lie parallel to each other for sources separated by ⪉10° on the sky. Using two larger samples, Sanders has recently concluded that this tendency to align is present at a high confidence level (>3σ) only for distant (z > 0.4) sources. The authors have attempted to verify the effect using two more independent and larger source samples and find no significant tendency for axis alignment. They also investigated a sample formed by adding well-observed radio quasars to 3CR sources and found that, even in this sample, the effect shows up only at a marginally significant level (<2σ).
Description: Restricted Access.
URI: http://hdl.handle.net/2289/4383
ISSN: 0028-0836
1476-4687 (Online)
Alternative Location: http://adsabs.harvard.edu/abs/1985Natur.313..463K
http://dx.doi.org/10.1038/313463a0
Copyright: 1985 Nature Publishing Group
Appears in Collections:Research Papers (A&A)

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