Detecting cosmic structure via 21-cm intensity mapping on the Australian Telescope Compact Array
Abstract
The studies of the nature of dark energy have defined contemporary astrophysics. We report the first detection of a cosmic power spectrum using the Australian Telescope Compact Array interferometer in the 21-cm L-band. We obtained the power spectrum through cross-correlation with optical galaxies, as well as auto-correlation using radio data alone.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 2012
- DOI:
- 10.1051/0004-6361/201117930
- Bibcode:
- 2012A&A...539L...5V
- Keywords:
-
- diffuse radiation;
- large-scale structure of Universe;
- galaxies: statistics;
- radio lines: galaxies;
- techniques: interferometric