BAYESIAN SEMI-BLIND COMPONENT SEPARATION FOR FOREGROUND REMOVAL IN INTERFEROMETRIC 21 cm OBSERVATIONS

ABSTRACT In this paper, we present a new Bayesian semi-blind approach for foreground removal in observations of the 21 cm signal measured by interferometers. The technique, which we call H i Expectation-Maximization Independent Component Analysis (HIEMICA), is an extension of the Independent Compone...

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Veröffentlicht in:	The Astrophysical journal. Supplement series 2016-01, Vol.222 (1), p.1-16
Hauptverfasser:	Zhang, Le, Bunn, Emory F., Karakci, Ata, Korotkov, Andrei, Sutter, P. M., Timbie, Peter T., Tucker, Gregory S., Wandelt, Benjamin D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Bayesian analysis COMPARATIVE EVALUATIONS COSMOLOGY cosmology: observations DATA ANALYSIS diffuse radiation ENERGY SPECTRA FREQUENCY DEPENDENCE HYDROGEN Independent component analysis instrumentation: interferometers Interferometers Interferometry MAPPING methods: data analysis methods: statistical NOISE Physics Power spectra RELICT RADIATION SIGNALS Three dimensional Two dimensional
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