| Name: | sai wagh |
| Affiliation: | Indian Institute of Science |
| Conference ID : | ASI2024_463 |
| Title : | HI absorption properties for a sample of nearby Molecular Hydrogen Emission Galaxies using GMRT data. |
| Authors : | Sai Wagh1, Nirupam Roy1, Mamta Pandey-Pommier2, Md Rashid1, Chinnathambi Muthumariappan3, Alexandre Marcowith2, Subhashis Roy4 |
| Authors Affiliation: | 1 Sai Wagh, Nirupam Roy, Md Rashid - Indian Institute of Science, Bangalore, India
2 Mamta Pandey-Pommier, Alexandre Marcowith - CNRS/Laboratoire Univers et Particules de Montpellier, Université de Montpellier, LUPM CC 072 - Place Eugène Bataillon 34095 Montpellier Cedex 5, France
3 ChinnathambiMuthumariappan - Indian Institute of Astrophysics, Bangalore, India
4 Subhashis Roy - National Centre for Radio Astrophysics, Pune, India |
| Mode of Presentation: | Poster |
| Abstract Category : | Galaxies and Cosmology |
| Abstract : | The HI 21-cm absorption lines serve as potent indicators of neutral hydrogen gas presence in the central regions (at a scale of parsecs), close to the central black hole of galaxies, and extending up to tens of kiloparsecs, revealing interactions and mergers within galaxy groups. This absorption occurs within galaxies, particularly in their central areas, allowing us to examine the characteristics and motion of the gas in these inner regions, giving valuable insights into the structures of Active Galactic Nuclei (AGN). We present here the recent findings from our analysis of GMRT's L-band data and our exploration of HI absorption characteristics in selected radio Molecular Hydrogen Emission Galaxies (MOHEGs). Our studies emphasize the significance of HI absorption studies and shed light on the role of neutral hydrogen gas in elucidating the properties of these galaxies. In the forthcoming HI 21-cm absorption surveys employing next-generation radio telescopes like the Square Kilometre Array (SKA) and related precursor instruments, there may be potential to track the evolution of the fainter population of HI absorbers. |
