HI as a Probe of the Large Scale Structure in the Post-Reionization Universe: Visibility Correlations and Prospects for Detection

Understand

Simulated maps of the HI distribution in the post-reionization era are used to study the prospects for detection with existing and upcoming radio telescopes.

• We consider detection in the redshifted radiation from the hyperfine transition with a rest frame frequency of 1420 MHz.
• Possibility of a statistical detection using visibility correlations is discussed.
• We show that the MWA (Murchison Widefield Array) and the GMRT (Giant Meterwave Radio Telescope) can potentially detect signal from the HI distribution at high redshifts.