IRAS 0421+0400: jets crossing an ISM/IGM interface?

Details IRAS 0421+0400: jets crossing an ISM/IGM interface? IRAS 0421+0400: jets crossing an ISM/IGM interface?

1995-12-14

arxiv.org/abs/astro-ph/9512097v1

Astronomy and Astrophysics

Astrophysics

Latex, 6 pages, 4 figs. Also available at http://axp2.ast.man.ac.uk:8000/Preprints.html To appear in "Energy Transport in Ra

Scientific paper

The emission lines in the active galaxy IRAS 0421+0400 show a dramatic (~ 900 km/s) increase in the velocity spread at the position of radio hotspots which are located at the beginning of extended radio lobes. We study a model which explains this phenomenon as the result of a jet emerging through the boundary between the interstellar and intergalactic media. A similar scenario has previously been suggested as an explanation for wide angle tail radio sources (WATs). Based on our model, we simulate the longslit spectra of these regions and compare the results with the observations and find that it can explain most of the details in the observed longslit spectra.

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