Speaker
Hengxing Pan
(University of Oxford)
Description
The neutral hydrogen (HI) in galaxies, intergalactic (IGM) and circumgalactic (CGM) mediums can trace the matter flow from large-scale structures to galaxies, and plays important roles in the process of galaxy formation and evolution. In this talk, I will present our efforts to detect the IGM and CGM using HI emission line with the world's largest single-dish radio telescope-FAST combined with the SKA precursor-MeerKAT. To achieve this, we took 13-hours FAST observation in L-band in the COSMOS field, overlapping with one of the MeerKAT MIGHTEE fields. The initial analysis demonstrates that we have reached the N_HI < 10^18 cm^-2 regime, where the diffuse HI gas is considered to be ubiquitous in the cosmic web.
Primary author
Hengxing Pan
(University of Oxford)
