منابع مشابه
Faranoff-Riley type I jet deceleration at density discontinuities Relativistic hydrodynamics with realistic equation of state
Context. The deceleration mechanisms for relativistic jets in active galactic nuclei remain an open question, and in this paper we propose a model which could explain sudden jet deceleration, invoking density discontinuities. This is particularly motivated by recent indications from HYbrid MOrphology Radio Sources, suggesting that in some case Fanaroff-Riley classification is induced by variati...
متن کاملExtragalactic radio sources with hybrid morphology: implications for the Fanaroff-Riley dichotomy
We provide observational and theoretical perspectives on the currently much debated issue of the Fanaroff-Riley (FR) morphological dichotomy of extragalactic radio sources. In this context we introduce a new, albeit rare, class of double radio sources in which the two lobes exhibit clearly different FR morphologies. It is argued that such ‘HYbrid MOrphology Radio Sources’, or HYMORS, could be u...
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In this paper, a new approach for estimating the number of wideband sources is proposed which is based on RSS or ISM algorithms. Numerical results show that the MDL-based and EIT-based proposed algorithm havea much better detection performance than that in EGM and AIC cases for small differences between the incident angles of sources. In addition, for similar conditions, RSS algorithm offers hi...
متن کاملShock heating by FR I radio sources in galaxy clusters
Feedback by active galactic nuclei (AGN) is frequently invoked to explain the cut-off of the galaxy luminosity function at the bright end and the absence of cooling flows in galaxy clusters. Meanwhile, there are recent observations of shock fronts around radioloud AGN. Using realistic 3D simulations of jets in a galaxy cluster, we address the question what fraction of the energy of active galac...
متن کاملMagnetic Field Strengths in the Hot Spots and Lobes of Three Powerful Fanaroff-riley Type Ii Radio Sources
We have made deep Chandra observations of three powerful Fanaroff-Riley type II (FR II) radio sources: two quasars (3C 263 and 3C 351) and one radio galaxy (3C 330). X-ray emission from hot spots and lobes, as well as from the active nucleus, is detected in each source. We model the hot spots’ synchrotron spectra using VLA, BIMA, and Hubble Space Telescope data. In 3C 263 and 3C 330, the hot sp...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2016
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201629375