Analysis of 21-cm tomographic data
Abstract
The future SKA1-Low radio telescope will be powerful enough to produce tomographic images of the 21-cm signal from the Epoch of Reionization. Here we address how to identify ionized regions in such data sets, taking into account the resolution and noise levels associated with SKA1-Low. We describe three methods of which one, superpixel oversegmentation, consistently performs best.
- Publication:
-
Peering towards Cosmic Dawn
- Pub Date:
- May 2018
- DOI:
- 10.1017/S1743921318000716
- Bibcode:
- 2018IAUS..333...26M
- Keywords:
-
- techniques: image processing;
- interferometric;
- (cosmology:) diffuse radiation;
- intergalactic medium;
- radio lines: general