EVIDENCE FOR RAPIDLY ROTATING BLACK HOLES IN FANAROFF–RILEY I RADIO GALAXIES [PDF]
Astrophysical Journal, 2011 We investigate the correlation between 151 MHz radio luminosity, L-151 (MHz), and jet power, P-jet, for a sample of low-power radio galaxies, of which the jet power is estimated from X-ray cavities.
Qingwen Wu
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Parsec-scale properties of eight Fanaroff–Riley type 0 radio galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We report the high-resolution radio observations of eight Fanaroff–Riley type 0 radio galaxies (FR 0s), selected from the published FR 0 sample. These observations were carried out with the Very Long Baseline Array (VLBA) and European VLBI Network (EVN) at frequencies of 5 and 8 GHz with a highest resolution of ∼0.6 milliarcsec.
Bong Won Sohn, Tao An, Xiaopeng Cheng
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Quintessence, Cosmology, and Fanaroff-Riley TypeIIb Radio Galaxies [PDF]
Astronomical Journal, 2002 Fanaroff-Riley type IIb (FR IIb) radio galaxies provide a modified standard yardstick that allows constraints to be placed on global cosmological parameters. A sample of 20 FR IIb radio galaxies with redshifts between 0 and 2 are compared with the parent population of 70 radio galaxies to determine the coordinate distance to each source. The coordinate-
Ruth Daly
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Fanaroff–Riley classification of radio galaxies using group-equivariant convolutional neural networks [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Weight sharing in convolutional neural networks (CNNs) ensures that their feature maps will be translation-equivariant. However, although conventional convolutions are equivariant to translation, they are not equivariant to other isometries of the input image data, such as rotation and reflection.
Anna Scaife, Fiona Porter
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ON THE ORIGIN OF FANAROFF–RILEY CLASSIFICATION OF RADIO GALAXIES: DECELERATION OF SUPERSONIC RADIO LOBES [PDF]
Astrophysical Journal, 2009 5 pages, 1 figure, accepted for publication in ApJ ...
Motoki Kino +2 more
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Fanaroff-Riley II Radio Galaxies and Quasars: The Depolarization Test
Astronomical Journal, 2001 Two statistically complete samples of 13 Fanaroff-Riley type II (FR II) radio galaxies (RGs) and 13 FR II quasars (QSRs) are compared in terms of their polarization properties. Previously, we have reported that the jet detection rate is consistent with the prediction of the unified models, with more jets detected in QSRs than in RGs.
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High Energy Cosmic Rays from Fanaroff-Riley radio galaxies [PDF]
Journal 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
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On the relationship between BL Lacertae objects and Fanaroff-Riley I radio galaxies [PDF]
Astrophysical Journal, 1994 Geoffrey Bicknell
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Revisiting the Fanaroff–Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS) [PDF]
Monthly 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 ...
Beatriz Mingo +2 more
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Discovery of a Fanaroff–Riley type 0 radio galaxy emitting at γ-ray energies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We present supporting evidence for the first association of a Fermi source, 3FGLJ1330.0-3818, with the FR0 radio galaxy Tol1326-379. FR0s represent the majority of the local radio loud AGN population but their nature is still unclear. They share the same properties of FRIs from the point of view of the nuclear and host properties, but they show a large
Ranieri D. Baldi, Alessandro Capetti
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