Results 51 to 60 of about 625,578 (206)
Spectral Structure in FR II Radio Galaxies and Jets [PDF]
The Astrophysical Journal, 2001 Using spectral tomography to separate overlapping spectral features in a sample of FRII radio galaxies, we find a variety of spatial/spectral features that are not easily described in the context of current models. In particular, we find mixtures of flat and steep spectrum features in the hot spot regions, and non-monotonic spectral index gradients ...
Treichel, K +3 more
openaire +4 more sources
Linking high-energy cosmic particles by black-hole jets embedded in large-scale structures [PDF]
, 2017 The origin of ultrahigh-energy cosmic rays (UHECRs) is a half-century-old enigma1. The mystery has been deepened by an intriguing coincidence: over ten orders of magnitude in energy, the energy generation rates of UHECRs, PeV neutrinos and isotropic sub ...
K. Fang, K. Murase
semanticscholar +1 more source
Rising jet-inflated bubbles in clusters of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2008 Abstract We conduct two-dimensional axisymmetric (referred to as 2.5D) hydrodynamical numerical simulations of bubble evolution in clusters of galaxies. We inflate bubbles using slow, massive jets with a wide opening angle, and follow their evolution as they rise through the intracluster medium.
Assaf Sternberg, Noam Soker
openaire +3 more sources
A relativistic mixing‐layer model for jets in low‐luminosity radio galaxies [PDF]
, 2009 We present an analytical model for jets in Fanaroff & Riley Class I (FR I) radio galaxies, in which an initially laminar, relativistic flow is surrounded by a shear layer.
Yang Wang +5 more
semanticscholar +1 more source
Unification of Radio Galaxies and their Accretion Jet Properties [PDF]
Journal of Astrophysics and Astronomy, 2011 We investigate the relation between black hole mass, M_bh, and jet power, Q_jet, for a sample of BL Lacs and radio quasars. We find that BL Lacs are separated from radio quasars by the FR I/II dividing line in M_bh-Q_jet plane, which strongly supports the unification scheme of FR I/BL Lac and FR II/radio quasar.
Ya-Di Xu, Xinwu Cao, Qingwen Wu
openaire +3 more sources
Astronomy & Astrophysics, 2022 Narrow-line Seyfert 1 (NLS1) galaxies are unevolved active galactic nuclei (AGNs) that exist predominantly in spiral galaxies. However, mostly due to the small number of sources studied, it has been under debate whether also the hosts of jetted NLS1 galaxies, a particular subclass of these sources hosting a relativistic jet, are disk-like or elliptical,
Varglund, I. +5 more
openaire +3 more sources
Jets, bubbles, and heat pumps in galaxy clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract Feedback from active galactic nucleus (AGN) jets has been proposed to counteract the catastrophic cooling in many galaxy clusters. However, it is still unclear which physical processes are acting to couple the energy from the bi-directional jets to the intra-cluster medium (ICM).
Yi-Hao Chen +2 more
openaire +2 more sources
Advanced Electronic Materials, EarlyView.A blackbody‐sensitive infrared photodetector comprised of an open‐shell conjugated polymer demonstrates high sensitivity without cooling and exceptional radiation hardness, surpassing inorganic compound semiconductor devices. This functionality, inherent to the polymer semiconductor, provides a new frontier for low‐cost, size, weight, and power space ...
Anthony R. Benasco +10 more
wiley +1 more source
Relativistic jet feedback - II. Relationship to gigahertz peak spectrum and compact steep spectrum radio galaxies [PDF]
, 2018 We propose that Gigahertz Peak Spectrum (GPS) and Compact Steep Spectrum (CSS) radio sources are the signposts of relativistic jet feedback in evolving galaxies.
G. Bicknell +4 more
semanticscholar +1 more source
Effect of Background Magnetic Field on Ion Weibel Instability With High‐Intensity Short‐Pulse Lasers
Contributions to Plasma Physics, EarlyView.ABSTRACT The effect of finite background magnetic field on magnetic field amplification by Weibel instability using high‐intensity short‐pulse lasers is investigated. We consider Weibel instability for counter‐streaming sub‐relativistic plasma flows generated by shooting pure carbon targets with short‐pulse lasers.
Taiki Jikei +3 more
wiley +1 more source