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Using Negative Detections to Estimate Source-Finder Reliability

Published online by Cambridge University Press:  02 January 2013

P. Serra ,
R. Jurek  and
L. Flöer
P. Serra*
Affiliation:
Netherlands Institute for Radio Astronomy (ASTRON), Postbus 2, 7990 AA Dwingeloo, The Netherlands
R. Jurek
Affiliation:
CSIRO Astronomy & Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia
L. Flöer
Affiliation:
Argelander-Institut für Astronomie, Auf dem Hügel 71, 53121 Bonn, Germany
*
DCorresponding author. Email: serra@astron.nl
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Abstract

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We describe a simple method to determine the reliability of source finders based on the detection of sources with both positive and negative total flux. Under the assumption that the noise is symmetric and that real sources have positive total flux, negative detections can be used to assign to each positive detection a probability of being real. We discuss this method in the context of upcoming, interferometric Hi surveys.

Keywords

methods: data analysis
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 29 , Special Issue 3: Source Finding and Visualisation , 2012 , pp. 296 - 300
Copyright
Copyright © Astronomical Society of Australia 2012

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