Open AccessAn adaptive filter for the construction of the Planck Compact Source Catalogue
Author(s) -
Chiang L.Y.,
Jørgensen H. E.,
Naselsky I. P.,
Naselsky P. D.,
Novikov I. D.,
Christensen P. R.
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05692.x
Subject(s) - physics , planck , cosmic microwave background , a priori and a posteriori , filter (signal processing) , point source , noise (video) , range (aeronautics) , spectral density , adaptive filter , harmonic , astrophysics , algorithm , optics , acoustics , computer science , artificial intelligence , computer vision , telecommunications , image (mathematics) , philosophy , materials science , epistemology , composite material , anisotropy
We develop a linear algorithm to extract extragalactic point sources for the Compact Source Catalogue of the upcoming Planck mission. This algorithm is based on a simple top‐hat filter in the harmonic domain with an adaptive filtering range which does not require a priori knowledge of the cosmic microwave background power spectrum, and experimental parameters such as the beam size and shape or the pixel noise level.