Results 1 to 10 of about 256,920 (281)
The Dynamics of Radio Galaxies and Double-Double Radio Galaxies [PDF]
Journal of Astrophysics and Astronomy, 2013 Relativistic and magnetised plasma ejected by radio loud AGNs through jets form the diffuse lobes of radio galaxies. The radiating particles (electron/electron-positron) in lobes emit in radio via the synchrotron process and X-ray via inverse-Compton ...
Croston, J. H. +6 more
core +5 more sources
RADIO SOURCES, GALAXIES, AND CLUSTERS OF GALAXIES [PDF]
Proceedings of the National Academy of Sciences, 1963 The identification of radio sources at high galactic latitudes has progressed to a stage at which it is possible to make the first tentative attempts at a statistical exploration of the results. The identification of the source 3C 48 shows that galactic sources may occur at high galactic latitudes, but the results of the determination of diameters of ...
R. Minkowski
openalex +3 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 ...
Ray P. Norris +13 more
openaire +5 more sources
Radio Galaxy Zoo: A Search for Hybrid Morphology Radio Galaxies [PDF]
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 ...
Ray P. Norris +19 more
openaire +7 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.
W. H. de Vries +5 more
openaire +4 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 +2 more
openaire +3 more sources
The Environments of Radio Galaxies [PDF]
Symposium - International Astronomical Union, 1996 In the unified schemes of AGNs BL Lac objects are believed to be Fanaroff-Riley (FR) type I radio galaxies with a relativistic jet aligned to the observer's line of sight (e.g. Urry & Padovani 1995). Kollgaard et al. (1992) and Owen et al. (1995) suggest some FR II sources can also be BL Lac parents. Clearly, isotropic properties such as the galaxy
G. Fasano +3 more
openaire +2 more sources
The fundamental plane of radio galaxies [PDF]
Astronomy & Astrophysics, 2001 We collected photometrical and dynamical data for 73 low red-shift (z<0.2) Radio Galaxies (LzRG) in order to study their Fundamental Plane (FP). For 22 sources we also present new velocity dispersion data, that complement the photometric data given in our previous study of LzRG (Govoni et al. 2000a). It is found that the FP of LzRG is similar to the
Renato Falomo +5 more
openaire +7 more sources
Dynamics of Powerful Radio Galaxies
Galaxies, 2023 Analytical models describing the dynamics of lobed radio sources are essential for interpretation of the tens of millions of radio sources that will be observed by the Square Kilometre Array and pathfinder instruments. We propose that historical models can be grouped into two classes in which the forward expansion of the radio source is driven by ...
Ross Turner, Stanislav Shabala
openaire +3 more sources