Results 1 to 10 of about 1,461 (165)
The distribution and lifetime of powerful radio galaxies as a function of environment and redshift [PDF]
Scientific Reports, 2018 Correlations between jet power and active time for z
David Garofalo +2 more
doaj +2 more sources
A galactic microquasar mimicking winged radio galaxies [PDF]
Nature Communications, 2017 Winged radio galaxies possess wing features detectable at radio wavelengths, yet the physical interpretation of such extragalactic radio sources remains elusive.
Josep Martí +3 more
doaj +2 more sources
The Origin and Evolution of Giant Radio Galaxies
Frontiers in Astronomy and Space Sciences, 2022 Giant radio galaxies are arguably the least understood of jetted active galactic nuclei (AGN). We propose that radio galaxies are the product of large mergers that do not involve radio galaxies or radio quasars, such as in merging spiral galaxies, while ...
David Garofalo
doaj +1 more source
The Dynamics of Radio Galaxies and Double–Double Radio Galaxies [PDF]
Journal of Astrophysics and Astronomy, 2011 11 pages, 4 figures, Diffuse Radio Plasma Conference proceedings (held in Raman Research Institute, Bangalore, India)
Konar, C. +6 more
openaire +3 more sources
Radio Galaxies at TeV Energies
Galaxies, 2022 Unlike blazars, radio galaxies have jets that are misaligned relative to our line-of-sight. This misaligned geometry provides us with a unique view of both the jet and super massive black hole.
Cameron Rulten
doaj +1 more source
Simulating the Enrichment of Fossil Radio Electrons by Multiple Radio Galaxies
Galaxies, 2023 We simulate the evolution of relativistic electrons injected into the intracluster medium by five radio galaxies. We study the spatial transport and the emission properties of the injected radio plasma over a ∼5 Gyr period, and the sequence of cooling ...
Franco Vazza +3 more
doaj +1 more source
RADIO DETECTION OF RADIO-QUIET GALAXIES [PDF]
The Astronomical Journal, 2008 We investigate the radio emission of ~185,000 quiescent (optically unclassifiable) galaxies selected from the Sloan Digital Sky Survey (SDSS). By median-stacking FIRST cutouts centered on the optically-selected sources, we are able to reach flux densities down to the 10s of microJy.
Hodge, J. A. +3 more
openaire +2 more sources
Radio galaxy zoo EMU: towards a semantic radio galaxy morphology taxonomy
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We present a novel natural language processing (NLP) approach to deriving plain English descriptors for science cases otherwise restricted by obfuscating technical terminology. We address the limitations of common radio galaxy morphology classifications by applying this approach.
Micah Bowles +22 more
openaire +5 more sources
General Physical Properties of Gamma-Ray-emitting Radio Galaxies
The Astrophysical Journal Supplement Series, 2023 We study the radio galaxies with known redshifts detected by the Fermi satellite after 10 yr of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous multiwavelength data of these radio galaxies and study the distributions of ...
Yongyun Chen +6 more
doaj +1 more source
Radio Galaxy Zoo: giant radio galaxy classification using multidomain deep learning [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT In this work we explore the potential of multidomain multibranch convolutional neural networks (CNNs) for identifying comparatively rare giant radio galaxies from large volumes of survey data, such as those expected for new generation radio telescopes like the SKA and its precursors.
H Tang +3 more
openaire +2 more sources