Results 11 to 20 of about 881,876 (240)
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 +5 more sources
Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters [PDF]
The Astronomical Journal, 2019 Abstract We study the impact of cluster environment on the morphology of a sample of 4304 extended radio galaxies from Radio Galaxy Zoo. A total of 87% of the sample lies within a projected 15 Mpc of an optically identified cluster. Brightest cluster galaxies (BCGs) are more likely than other cluster members to be radio sources, and are ...
Avery F. Garon +11 more
openaire +3 more sources
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 galaxies: unification and dust properties [PDF]
New Astronomy Reviews, 2003 The 2002 status of unification models for extragalactic radio sources is examined, with particular emphasis on the dust properties of these objects.
Barthel, P, van Bemmel, I
openaire +3 more sources
A multi-wavelength study of powerful high redshift radio galaxies [PDF]
, 2021 Philosophiae Doctor - PhDWe present a new sample of distant powerful radio galaxies, in order to study their host-galaxy properties and provide targets for future observations of Hi absorption with new radio telescopes.
Marubini, Takalani
core +1 more source
Cosmic downsizing of powerful radio galaxies to low radio luminosities [PDF]
, 2015 E.E.R. acknowledges financial support from NWO (grant number: NWO-TOP LOFAR 614.001.006). E.E.R. and J.A. thank the Leiden/ESA astrophysics program for summer students (LEAPS) which supported J.A. in Leiden.Aims. At bright radio powers (P1.4 GHz > 1025 W/
Best, P. +13 more
core +1 more source
The particle content of low-power radio galaxies in groups and clusters [PDF]
, 2013 The synchrotron-radiating particles and magnetic fields in low-power radio galaxies (including most nearby cluster-centre sources), if at equipartition, can provide only a small fraction of the total internal energy density of the radio lobes or plumes ...
Croston, J.H. +3 more
core +1 more source
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 +8 more sources
Radio Galaxy Zoo: A Search for Hybrid Morphology Radio Galaxies
The Astronomical Journal, 2017 Abstract Hybrid morphology radio sources (HyMoRS) are a rare type of radio galaxy that display different Fanaroff–Riley classes on opposite sides of their nuclei. To enhance the statistical analysis of HyMoRS, we embarked on a large-scale search of these sources within the international citizen science project, Radio Galaxy Zoo (RGZ ...
A. D. Kapińska +16 more
openaire +6 more sources
On the environments of giant radio galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We test the hypothesis that environments play a key role in enabling the growth of enormous radio structures spanning more than 700 kpc, an extreme population of radio galaxies called giant radio galaxies (GRGs). To achieve this, we explore (1) the relationships between the occurrence of GRGs and the surface number density of ...
Ting-Wen Lan 藍鼎文 +1 more
openaire +2 more sources