Associated HI Absorption in the 𝑧 = 3.4 Radio Galaxy B2 0902 + 343 Observed with the GMRT

Journal of astrophysics and astronomy

Govind Swarup3¹  Nimisha G. Kantharia3¹  Poonam Chandra1 2²  Vasant K. Kulkarni3¹ 

[1] National Centre for Radio Astrophysics, TIFR, Pune 411 007, India.$$;Tata Institute of Fundamental Research, Mumbai 400 005, India.$$

关键词: Galaxies: active;    absorption lines;    radio lines;    galaxies;    radio galaxies;    individual (0902 + 343).;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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 (2𝜎) on emission line strength at the position where Uson et al. (1991) claimed to have found a narrow emission line.

【 授权许可】

Unknown