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A Powerful Jet/Cloud Interaction in the Radio Galaxy PKS 2250-41

  • R. Morganti (a1), C.N. Tadhunter (a2), N. Clark (a2) and N. Killeen (a3)

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Extended emission line regions aligned with the radio axis are a common feature of powerful radio galaxies and there is much interest in the origin of the extended gas and excitation mechanism. One model that can produce this alignment is photoionization by anisotropic nuclear continuum radiation. However, strong evidence exists, especially in high redshift radio galaxies, for powerful interactions between the relativistic radio jets and the ISM/IGM. Here we present the results of our study of the southern radio galaxy PKS 2250–41 (z = 0.308). This object is the most spectacular found in a sample of southern radio sources studied by Tadhunter et al. (1993) and it displays particularly clear evidence for such an interaction (Tadhunter et al. 1994; Dickson et al. 1995).

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References

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Daly, , 1992 ApJ , 399, 426;
de Young, , 1989 ApJ , 342, L59;
Dickson, R.C., Tadhunter, C.N., Shaw, M.A., Clark, N.E. & Morganti, R. 1995 MNRAS , 273, L29;
Sutherland, R.S., Bicknell, G.V. & Dopita, M.A. 1993 ApJ , 414, 510;
Tadhunter, C.N., Morganti, R., di Serego Alighieri, S., Fosbury, R.A.E. & Danziger, I.J. 1993 MNRAS , 263, 999;
Tadhunter, C.N., Shaw, M.A., Clark, N.E. & Morganti, R. 1994 A&A , 288, L21

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