Speaker
Description
The MeerKAT Absorption Line Survey (MALS) will use MeerKAT’s L- and UHF-band receivers to carry out the most sensitive search of associated and intervening 21-cm absorbers at $0 < z < 1.5$. It will trace the relationship between cold atomic gas in galaxies, and the evolution of SFRD and AGN feedback. With uGMRT, we have recently completed a blind search of associated and intervening absorbers in a sample of $\sim 100$ IR-selected quasars at $2 < z < 3.5$. We have also obtained information on ionized and neutral gas along the sightline for all the quasars through our SALT/NOT optical observations. In this talk, I will present (1) results from the uGMRT search with constraints on CNM cross-section of galaxies and interpretations based on the optical/IR data, and (2) science goals and the current status of MALS.
| Wish list question? | 3. At high redshift, how do HI emission-line and absorption-line observations relate to optical absorption-line and molecular emission-line measurements of cosmic gas reservoirs? |
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