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IRAS04210+0400: Modeling the optical spectra from flaring large scale jets | | W. Steffen
; A.J. Holloway
; A. Pedlar
; | | Date: |
10 May 1996 | | Abstract: | The emission-lines in the active galaxy IRAS,0421+0400 show a dramatic ($sim$,900kms) increase in the velocity spread at the position of radio hot-spots which are located at the beginning of extended radio lobes. We study a simple geometric model of an opening outflow which reproduces the structure found in the long-slit emission-line spectrum of the hot-spot regions. The predicted bifurcations in the optical image structure of these regions is confirmed by deep oiii,line-imaging. We propose that this phenomenon is the result of a jet emerging from the galaxy through the boundary between the interstellar and intergalactic medium. A similar model has previously been suggested as an explanation for wide angle tail radio sources (WAT’s). If our model proves to be correct in more detailed future observations, then IRAS,0421+0400 provides a unique possibility to study the flaring jet phenomenon at optical wavelengths. | | Source: | arXiv, astro-ph/9605049 | | Services: | Forum | Review | PDF | Favorites | |
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