Fast outflow of neutral hydrogen in the radio galaxy 3C293

Details Fast outflow of neutral hydrogen in the radio galaxy 3C293 Fast outflow of neutral hydrogen in the radio galaxy 3C293

2003-07-11

arxiv.org/abs/astro-ph/0307241v1

Astrophys.J.593:L69-L72,2003

Astronomy and Astrophysics

Astrophysics

11 pages, 4 Figures To be published in: Astrophysical Journal Letters

Scientific paper

10.1086/378219

We report the detection of very broad HI absorption against the central regions of the radio galaxy 3C293. The absorption profile, obtained with the Westerbork Synthesis Radio Telescope, has a full width at zero intensity of about 1400 km/s and most of this broad absorption (~1000 km/s) is blueshifted relative to the systemic velocity. This absorption represents a fast outflow of neutral gas from the central regions of this AGN. Possible causes for such an outflow are discussed. We favour the idea that the interaction between the radio jet and the rich ISM produces this outflow. Some of the implications of this scenario are considered.

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