Results 121 to 130 of about 977,708 (130)

When Less Is More: Are Radio Galaxies below the Fanaroff-Riley Break More Polarized on Parsec Scales?

Astrophysical Journal, 2005
10 pages, 4 figures, to be published in the Astrophysical Journal ...
Prajval Shastri, Preeti Kharb
exaly   +3 more sources

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Ultrahigh-energy cosmic rays from Fanaroff Riley class II radio galaxies

AIP Conference Proceedings, 1992
The hot spots of Fanaroff Riley class II radio galaxies are argued to be the sources of the ultrahigh energy component in cosmic rays. We present calculations of cosmic ray transport in an evolving universe, taking the losses against the microwave background properly into account.
Jörg Rachen, Peter L. Biermann
openaire   +1 more source

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

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
Prajval Shastri, Preeti Kharb
exaly   +2 more sources

Classification of Fanaroff-Riley Radio Galaxies using Conventional Machine Learning Techniques

2019 International Multidisciplinary Information Technology and Engineering Conference (IMITEC), 2019
Large scale radio astronomy projects such as the Square Kilometre Array (SKA) is expected to produce extremely large data sets (300 PB p/a), which makes purely manual classification no longer a viable option. An automatic method of radio galaxy classification is proposed in this paper that will examine the performance of conventional classification ...
Burger Becker, Trienko Grobler
openaire   +1 more source

Fanaroff-Riley I galaxies as the parent populations of BL Lacertae objects. III - Radio constraints

Astrophysical Journal, 1991
Meg Urry, Paolo Padovani
exaly   +2 more sources

Dust in BL Lac objects and Fanaroff-Riley radio galaxies: infrared region

Astrophysics and Space Science, 2015
Here 28 BL Lac objects, 18 FR I type radio galaxies, 4 FR I/II type radio galaxies and 10 FR II type radio galaxies are studied from FIR (far infrared) to optical region (180 μm to 0.44 μm) to understand the nature of infrared emission from these objects and the physical properties of dust in the emitting region.
openaire   +1 more source

A physically-motivated perspective of Fanaroff–Riley classification of radio galaxies

Journal of Astrophysics and Astronomy, 2023
null Gopal-Krishna, Paul J. Wiita, Ravi Joshi, Dusmanta Patra   +3 more
openaire   +1 more source

The role of Fanaroff-Riley II radio galaxies in the acceleration of the most energetic cosmic rays

Nuclear Physics B - Proceedings Supplements, 2007
Possible sources of ultra-high energy cosmic rays are the hot-spots of Fanaroff-Riley II radio galaxies. In fact, these regions meet the requirements of size, magnetic field intensity and presence of strong shocks for accelerating particles up to energies that exceed 10 21  eV . On the other hand, the interaction with the photons of the Cosmic
openaire   +1 more source

Bayesian inference of jet bulk-flow speeds in Fanaroff-Riley type II radio sources

Monthly Notices of the Royal Astronomical Society, 2009
Martin J. Hardcastle
exaly  

The prevalence of Fanaroff-Riley type I radio quasars

Monthly Notices of the Royal Astronomical Society, 2007
Ian Heywood, Katherine Blundell, Steve Rawlings   +2 more
exaly