Astronomy below the Survey Threshold
Abstract
Astronomy at or below the 'survey threshold' has expanded significantly since the publication of the original 'Science with the Square Kilometer Array' in 1999 and its update in 2004. The techniques in this regime may be broadly (but far from exclusively) defined as 'confusion' or 'P(D)' analyses (analyses of one-point statistics), and 'stacking', accounting for the flux-density distribution of noise-limited images co-added at the positions of objects detected/isolated in a different waveband. Here we discuss the relevant issues, present some examples of recent analyses, and consider some of the consequences for the design and use of surveys with the SKA and its pathfinders.
Cite
@article{arxiv.1412.5743,
title = {Astronomy below the Survey Threshold},
author = {Jonathan T. L. Zwart and Jasper Wall and Alexander Karim and Carole Jackson and Ray Norris and Jim Condon and Jose Afonso and Ian Heywood and Matt Jarvis and Felipe Navarrete and Isabella Prandoni and Emma Rigby and Huub Rottgering and Mario Santos and Mark Sargent and Nick Seymour and Russ Taylor and Tessa Vernstrom},
journal= {arXiv preprint arXiv:1412.5743},
year = {2014}
}
Comments
13 pages, 5 figures, to appear as part of 'Continuum Science' in Proceedings 'Advancing Astrophysics with the SKA (AASKA14)' [PoS(AASKA14)172]