Using negative detections to estimate source finder reliability

Details Using negative detections to estimate source finder reliability Using negative detections to estimate source finder reliability

2011-12-14

arxiv.org/abs/1112.3162v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

Accepted for publication on the 2012 PASA source finding special issue

Scientific paper

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.

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