Results 101 to 110 of about 1,242,014 (263)
, 2012 Multifrequency radio continuum observations (1.4–22 GHz) of a sample of reddened quasi-stellar objects (QSOs) are presented. We find a high incidence (13/16) of radio spectral properties, such as low-frequency turnovers, high-frequency spectral breaks or
A. Georgakakis +3 more
semanticscholar +1 more source
Parsec-Scale Kinematic and Polarization Properties of MOJAVE AGN Jets
EPJ Web of Conferences, 2013 We describe the parsec-scale kinematics and statistical polarization properties of 200 AGN jets based on 15 GHz VLBA data obtained between 1994 Aug 31 and 2011 May 1.
Lister Matthew L.
doaj +1 more source
The Observatory, 1997 This thesis describes two studies of extragalactic radio sources at high resolution and sensitivity. Most of the well-known facts about radio sources come from low-resolution imaging, despite the fact that much of the interesting physics (that of the jets and hotspots) occurs on scales that are small compared to the overall source size.
openaire +2 more sources
Radio Emission and Jets from Microquasars [PDF]
, 2009 28 pages, 13 figures, To appear in Belloni, T. (ed.): The Jet Paradigm - From Microquasars to Quasars, Lect. Notes Phys. 794 (2009)
openaire +3 more sources
Relativistic Jets in Radio-Weak Quasars and LINER Galaxies [PDF]
arXiv, 1997 We discuss radio observations of a sample of radio-weak and radio-intermediate quasars which demonstrate that - just like their radio-loud counterparts - radio-weak quasars too have relativistic jets in their nuclei. Moreover, a VLA survey of nearby LINER galaxies reveals a relatively large number of flat-spectrum radio cores.
arxiv
A Simulation Study of Low-power Relativistic Jets: Flow Dynamics and Radio Morphology of FR-I Jets
The Astrophysical JournalRadio galaxies are classified into two primary categories based on their morphology: center-brightened FR-I and edge-brightened FR-II. It is believed that the jet power and interactions with the ambient medium govern the deceleration and decollimation of
Ayan Bhattacharjee +3 more
doaj +1 more source
Jets in AGN -- New Results from HST and VLA [PDF]
arXiv, 1998 This paper summarizes some of our recent projects which try to illuminate the nature and importance of jets associated with active nuclei and compact objects. After a short introduction on jets in radio galaxies and radio loud quasars the paper focuses on jets in other source types, such as radio-quiet quasars, Seyfert and LINER galaxies, and stellar ...
arxiv
Radio Morphology of Gamma-Ray Sources: Double-lobed Radio Sources
The Astrophysical JournalThe extragalactic γ -ray sky is dominated by relativistic jets aligned to the observer’s line of sight, i.e., blazars. A few of their misaligned counterparts, e.g., radio galaxies, are also detected with the Fermi-Large Area Telescope (LAT), albeit in a ...
Vaidehi S. Paliya +3 more
doaj +1 more source
Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. III. Kinematics of Parsec-scale Radio Jets [PDF]
, 2004 We report the results of a 15 GHz (2 cm) multiepoch Very Long Baseline Array (VLBA) program, begun in 1994 to study the outflow in radio jets ejected from quasars and active galaxies.
K. Kellermann +12 more
semanticscholar +1 more source
A giant radio jet of very unusual polarization in a single-lobed radio galaxy [PDF]
arXiv, 2009 We report the discovery of a very unusual, predominantly one-sided radio galaxy CGCG049-033. Its radio jet, the largest detected so far, emits strongly polarized synchrotron radiation and can be traced all the way from the galactic nucleus to the hot spot located ~440 kpc away.
arxiv