Deceleration from Entrainment in the jet of the quasar 1136-135?
F. Tavecchio, L. Maraschi, R. M. Sambruna, M. Gliozzi, C. C. Cheung, J. F. C. Wardle, C. M. Urry
Abstract
Modeling the multiwavelength emission of successive regions in the jet of the quasar PKS 1136-135 we find indication that the jet suffers deceleration near its end on a (deprojected) scale of ~400 kpc. Adopting a continuous flow approximation we discuss the possibility that the inferred deceleration from a Lorentz factor Gamma=6.5 to Gamma=2.5 is induced by entrainment of external gas. Some consequences of this scenario are discussed.
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