Deceleration from Entrainment in the Jet of the Quasar 1136−135?

2005/12/15 by F. Tavecchio, L. Maraschi, R. M. Sambruna +4
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1086/500536

published as Astrophys.J.641:732-739,2006 · 23 pages, 3 figures. Accepted by ApJ

arxiv created 2005/12/15 · openalex publication_date 2006/04/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

By modeling the multiwavelength emission of successive regions in the jet of the quasar PKS 1136-135, we find indications that the jet suffers deceleration near its end on a (deprojected) scale of ~400 kpc. We adopt a continuous flow approximation, and we discuss the possibility that the inferred deceleration from a Lorentz factor of Γ = 6.5 to 2.5 is induced by entrainment of external gas. Some consequences of this scenario are discussed.

Citations

• Bulk Comptonization of the Cosmic Microwave Background by Extragalactic Jets as a Probe of Their Matter Content
• Sub‐Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. III. Kinematics of Parsec‐scale Radio Jets
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Extragalactic Radio Jets