Optimal Detection of Sources on a Homogeneous and Isotropic Background
Open Access
- 10 May 2001
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 552 (2) , 484-492
- https://doi.org/10.1086/320550
Abstract
This paper introduces the use of pseudofilters that optimize the detection/extraction of sources on a background. We assume as a first approach that such sources are described by a spherical (central) profile and that the background is represented by a homogeneous and isotropic random field. We make an n-dimensional treatment, placing emphasis on astrophysical applications for spectra, images, and volumes, for the cases of exponential and Gaussian source profiles and scale-free power spectra to represent the background.Keywords
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