Abstract: The study of the large-scale structure and evolution of the Universe has entered a new era with the emergence of neutral hydrogen intensity mapping as a powerful observational technique. HI intensity mapping (IM) offers a unique and innovative approach to cosmological research by probing the distribution of neutral hydrogen in the Universe on vast scales. This technique utilizes radio telescopes, such as MeerKAT, to detect the cumulative 21cm emission from neutral hydrogen. In this talk, I will introduce our current HI IM experiment with MeerKAT in the post-reionization universe, and detail our recent breakthrough — the first direct measurements of the HI IM power spectrum at redshifts 0.32 and 0.44. These findings signify a significant step forward in our quest to unlock the mysteries of the Universe's evolution and structure.

Meeting ID: 979 7597 0806
Passcode: 928785