Results 61 to 70 of about 977,708 (130)

The Parsec-Scale Structure and Evolution of the Nearby Fanaroff-Riley Type II Radio Galaxy Pictor A

The Astronomical Journal, 2000
We present very long baseline interferometry (VLBI) images of the core emission from a nearby bright FR II radio galaxy, Pictor A, revealing its parsec-scale jet structure and evolution for the first time. These data constitute a significant addition to our knowledge of powerful radio galaxies on the smallest scales, effectively doubling the number ...
S. J. Tingay, D. L. Jauncey, J. E. Reynolds, A. K. Tzioumis, P. M. McCulloch, S. P. Ellingsen, M. E. Costa, J. E. J. Lovell, R. A. Preston, S. M. Simkin   +9 more
openaire   +1 more source

FIRST radio galaxy data set containing curated labels of classes FRI, FRII, compact and bent. [PDF]

Data Brief, 2023
Griese F, Kummer J, Connor PLS, Brüggen M, Rustige L.   +4 more
europepmc   +1 more source

Here Be SDRAGNs—Spiral Galaxies Hosting Large Double Radio Sources

The Astronomical Journal
We present a sample of large double radio sources hosted by spiral galaxies (spiral double radio active galactic nuclei, SDRAGNs). Candidates were initially selected through the Radio Galaxy Zoo project and subsequently refined using Sloan Digital Sky ...
Jean Tate, William C. Keel, Michael O’Keeffe, O. Ivy Wong, Heinz Andernach, Julie K. Banfield, Alexei Moiseev, Aleksandrina Smirnova, Arina Arshinova, Eugene Malygin, Elena Shablovinskaya, Roman Uklein, Stanislav Shabala, Ray Norris, Brooke D. Simmons, Rebecca Smethurst, Ivan Terentev, Chris Molloy, Victor Linares   +18 more
doaj   +1 more source

Spectral ageing in the lobes of FR-II radio galaxies: new methods of analysis for broad-band radio data [PDF]

, 2013
The broad-bandwidth capabilities of next generation telescopes such as the Jansky Very Large Array (JVLA) mean that the spectrum of any given source varies significantly within the bandwidth of any given observation.
Goodger, J. L., Croston, J.H., Harwood, J. J., Goodger, J.L., Hardcastle, M.J., Hardcastle, M. J., Harwood, J.J., Croston, J. H.   +7 more
core   +1 more source

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]

Astron Astrophys Rev, 2023
Ruszkowski M, Pfrommer C.
europepmc   +1 more source

Powerful Outflows of Compact Radio Galaxies

The Astrophysical Journal
Gigahertz peaked spectrum (GPS) and compact steep spectrum (CSS) sources are compact radio galaxies (RGs), with jets extending up to 20 kpc and ages
Bárbara L. Miranda Marques, Alberto Rodríguez-Ardila, Marcos A. Fonseca-Faria, Swayamtrupta Panda   +3 more
doaj   +1 more source

Studying X-ray spectra from large-scale jets of Fanaroff–Riley type I radio galaxies: Application of shear particle acceleration

Astronomy & Astrophysics
Shear acceleration is a promising candidate mechanism for particle acceleration in extragalactic relativistic jets. For this study, we explored the application of the shear acceleration model to 17 X-ray-bright jet regions in the large-scale jets of ...
Wang Jia-Xing, He Jia-Chun, Sun Xiao-Na, Wang Jie-Shuang, Rieger Frank M., Liang Yun-Feng, Zhang Hai-Ming, Liang En-Wei   +7 more
doaj   +1 more source

The environments of the radio galaxy population in simba. [PDF]

Mon Not R Astron Soc, 2022
Thomas N, Davé R.
europepmc   +1 more source

Powerful Radio Sources in the Southern Sky. IV. Observations of the G4Jy-3CRE Catalog with the Australian Square Kilometre Array Pathfinder

The Astrophysical Journal Supplement Series
A recent 2023 paper by Massaro et al. introduced the G4Jy-3CRE, a new catalog of the brightest radio sources in the Southern Hemisphere that serve as a southern equivalent to the Third Cambridge Catalog Revised (3CR).
Siegfried A. Gawenda, Juan P. Madrid, Francesco Massaro, Sarah V. White, C. C. Cheung, Chiara Mazzucchelli, Abigail García-Pérez, I. Andruchow, Vahram Chavushyan, Ralph Kraft, Victoria Reynaldi, Ana Jimenez-Gallardo, Alessandro Capetti, Barbara Balmaverde, William R. Forman, H. A. Peña-Herazo, Nicole Nesvadba, Sergio A. Cellone, Romana Grossová, Alessandro Paggi, Eleonora Sani, C. Leto   +21 more
doaj   +1 more source

Radio Morphology of Gamma-Ray Sources: Double-lobed Radio Sources

The Astrophysical Journal
The 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, D. J. Saikia, Alberto Domínguez, C. S. Stalin   +3 more
doaj   +1 more source