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Associated HI absorption in thez = 3.4 radio galaxy B2 0902 + 343 observed with the GMRT

2004/03/01 by P. Chandra, Poonam Chandra, G. Swarup +5 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1007/bf02702288

To appear in Journal of Astronomy and Astrophysics

openalex publication_date 2004/03/01 · arxiv created 2004/07/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We have made observations of the associated HI absorption of a high redshift radio galaxy 0902+34 at z=3.395 with the Giant Meterwave Radio Telescope in the 323±1 MHz band. We find a narrow absorption line with a flux density of 11.5 mJy at a redshift of 3.397 consistent with that observed by Uson et al. (1991), Briggs et al. (1993) and de Bruyn (1996).A weak broad absorption feature reported by de Bruyn (1996) has not been detected in our observations. We also place an upper limit of 4 mJy (2 σ) on emission line strength at the position where Uson et al. (1991) claimed to have found a narrow emission line.

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