Detecting the 21 cm Signal from the Epoch of Reionization Using Drift Scans: Correlation of Time-ordered Visibilities

We present a formalism to extract the H i power spectrum from the epoch of reionization for drift scans using radio interferometers. Our main aim is to determine the coherence timescale of time-ordered visibilities. We compute the two-point correlation function of the H i visibilities measured at di...

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Veröffentlicht in:	The Astrophysical journal 2019-12, Vol.887 (1), p.52
Hauptverfasser:	Patwa, Akash Kumar, Sethi, Shiv
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplitudes Arrays Astronomical methods Astronomical techniques Astrophysics Beams (radiation) Coherence Correlation Cosmology Drift Drift scan imaging Early universe Formalism Hydrogen Ice Interferometric correlation Ionization Nonclassical interferometry Observational cosmology Radio astronomy Radio interferometers Radio interferometry Reionization Signal processing Time
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