Results 11 to 20 of about 183 (111)

Radio morphology–accretion mode link in Fanaroff–Riley type II low-excitation radio galaxies [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Fanaroff–Riley type II (FR II) low-excitation radio galaxies (LERGs) are characterized by weak nuclear excitation on parsec-scales and properties typical of powerful FR IIs (defined as high-excitation radio galaxies, hereafter HERGs/BLRGs) on kiloparsec-scales.
Duccio Macconi   +4 more
exaly   +7 more sources

ROTATION MEASURES ACROSS PARSEC-SCALE JETS OF FANAROFF-RILEY TYPE I RADIO GALAXIES [PDF]

open access: bronzeThe Astrophysical Journal, 2009
We present the results of a parsec-scale polarization study of three FRI radio galaxies—3C66B, 3C78, and 3C264—obtained with Very Long Baseline Interferometry at 5, 8, and 15 GHz. Parsec-scale polarization has been detected in a large number of beamed radio-loud active galactic nuclei, but in only a handful of the relatively unbeamed radio galaxies. We
P. Kharb   +4 more
exaly   +5 more sources

The relation between the radio emission of the core and host galaxy properties in Fanaroff–Riley type II radio galaxies [PDF]

open access: greenPublications of the Astronomical Society of Australia, 2022
AbstractWe study the radio power of the core and its relation to the optical properties of the host galaxy in samples of high-excitation (HERG) and low-excitation (LERG) Fanaroff–Riley type II (FRII) radio galaxies. The radio galaxy sample is divided into two groups of core/non-core FRII, based on the existence of strong, weak or lack of single radio ...
Farideh Mazoochi   +2 more
exaly   +5 more sources

Revisiting the Fanaroff–Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS) [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 2019
Abstract The relative positions of the high and low surface brightness regions of radio-loud active galaxies in the 3CR sample were found by Fanaroff and Riley to be correlated with their luminosity. We revisit this canonical relationship with a sample of 5805 extended radio-loud active galactic nuclei (AGN) from the LOFAR Two-Metre Sky ...
B. Mingo   +17 more
exaly   +11 more sources

EVIDENCE FOR RAPIDLY ROTATING BLACK HOLES IN FANAROFF-RILEY I RADIO GALAXIES [PDF]

open access: bronzeThe Astrophysical Journal, 2011
We investigate the correlation between 151 MHz radio luminosity, L{sub 151MHz}, and jet power, P{sub jet}, for a sample of low-power radio galaxies, of which the jet power is estimated from X-ray cavities. The jet power for a sample of Fanaroff-Riley I radio galaxies (FR Is) is estimated with the derived empirical correlation. We find that P{sub jet}/L{
Qingwen Wu, Xinwu Cao, Ding-Xiong Wang
exaly   +5 more sources

‘Normal’ Fanaroff-Riley type II radio galaxies as a probe of the nature of X-shaped radio sources [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 2008
The original article can be found at: http://www3.interscience.wiley.com Copyright Blackwell Publishing.
D. Lal, M. J. Hardcastle, Ralph Kraft
exaly   +4 more sources

High Energy Cosmic Rays from Fanaroff-Riley radio galaxies [PDF]

open access: greenJournal of Cosmology and Astroparticle Physics, 2019
The extended jet structures of radio galaxies (RGs) represent an ideal acceleration site for High Energy Cosmic Rays (HECRs) and a recent model showed that the HECR data can be explained by these sources, if the arrival directions of HECRs at energies $\lesssim 8\,\text{EeV}$ from a certain RG, Cygnus A, are isotropized. First, this work introduces the
B. Eichmann
openalex   +4 more sources

Deep imaging of Fanaroff-Riley Class I radio galaxies with lobes [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 2011
21 pages, 12 figures, accepted for publication in ...
R. A. Laing   +4 more
  +5 more sources

ON THE ORIGIN OF FANAROFF-RILEY CLASSIFICATION OF RADIO GALAXIES: DECELERATION OF SUPERSONIC RADIO LOBES [PDF]

open access: bronzeThe Astrophysical Journal, 2009
5 pages, 1 figure, accepted for publication in ApJ ...
Nozomu Kawakatu   +2 more
openalex   +4 more sources

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