radio galaxies
A low-frequency study of recently identified double-double radio galaxies
... restarting radio sources which includes our sample as ...FRII radio galaxies, while the concentration in- dices (CI; the ratio of radius containing 90% of Petrosian flux to the radius containing 50% ...
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Starbursts and the triggering of the activity in nearby powerful radio galaxies
... Most probably, the largest sources of uncertainty in the results described above relate to the assumed parameters of the spectral synthesis results used to model the data, most notably, the duration of the starburst, the ...
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A dichotomy in the orientation of dust and radio jets in nearby low-power radio galaxies
... I radio galaxies, the “UGC FR-I sample” (Xu et ...sample galaxies, which either contain regular dust structures with an elliptical appear- ance (“ellipses”), or filamentary structures ...in ...
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Infrared-faint radio sources: A new population of high-redshift radio galaxies
... of radio spectra separately, and by placing upper limits on their linear size, they showed that all their IFRSs could be modelled as well-known Fanaroff and Riley type II (FR II; Fanaroff & Riley 1974) ...
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Cosmic ray acceleration to ultrahigh energy in radio galaxies
... The non-relativistic requirement: So far we have made arguments purely on energetic grounds, without con- sidering the physical process for acceleration. It has been shown by various authors that acceleration to ...
6
LOFAR-Boötes: properties of high- and low-excitation radio galaxies at 0.5 < z < 2.0
... bluer galaxies in less dense environments ...powerful radio sources tend to be high excitation radio galaxies (HERGs), they are in fact found at all radio powers (Best & Heckman ...
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ISO observations of a sample of Compact Steep Spectrum and GHz Peaked Spectrum radio galaxies
... the radio galaxies in our sample, which are very powerful in the radio band and have large luminosities in the Narrow Emission Lines ( L OIII ≈ 10 43 erg s −1 , Gelderman & Whittle, 1994), are ...
15
The environments of luminous radio galaxies and type-2 quasars
... (quiescent) galaxies to classify their morphologies in exactly the same ...Since radio galaxies are almost invariably as- sociated with elliptical hosts (see ...type galaxies with similar ...
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The properties of the young stellar populations in powerful radio galaxies at low and intermediate redshifts
... powerful radio galaxies with previous evidence for ...of radio source host galaxies, and the heating mechanism of the warm/cool dust in AGN, will be discussed in forthcoming papers (Tadhunter ...
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Diverse young stellar populations in the intermediate-redshift radio galaxies 3C 213.1 and 3C 459: implications for the evolution of the host galaxies
... powerful radio galaxies at intermediate redshifts (3C ...observed radio source has been triggered close to the peak of star formation activity in a major gas-rich ...the radio source has been ...
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Radio galaxies at low frequencies: high spatial and spectral resolution studies with LOFAR
... a radio galaxy, spectral indices are seen to evolve along the radio jet axis, with hot spots dominant at high fre- quencies, and diffuse lobe emission is dominant at low frequencies ...
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A new sample of giant radio galaxies from the WENSS survey. II. A multi-frequency radio study of a complete sample: Properties of the radio lobes and their environment
... giant radio galaxies (GRGs) from the WENSS survey, selected at flux densities above 1 Jy at 325 ...the radio prop- erties of the lobes of these sources at arcminute ...investigate radio source ...
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A sample of 669 ultra steep spectrum radio sources to find high redshift radio galaxies
... because radio power is correlated with redshift in bright flux limited samples, and an upper limit exists in the radio ...redshift radio galaxies would decrease (Blundell et ...
31
Morphological classification of radio galaxies: Capsule Networks versus Convolutional Neural Networks
... (edge-bright) galaxies (Fanaroff & Riley 1974). Rarer are hybrid galaxies, which fall in between FRI and FRII galaxies (Gopal & Wiita ...the radio galaxy, while the jets of FRII are ...
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The Environment of z > 1 3CR Radio Galaxies and QSOs: From Proto-clusters to Clusters of Galaxies?
... 12 radio galaxies ( RGs ) and nine quasars, with Hubble Space Telescope ( HST ) images in the optical and ...early-type galaxies ( ETGs ) in every fi eld by modeling each of the sources within a 40 ″ ...
12
The triggering probability of radio-loud AGN: A comparison of high and low excitation radio galaxies in hosts of different colors
... luminosity radio-loud (RL) active galactic nuclei (AGN) are predominantly hosted by massive red elliptical galaxies ...halo-fed radio galaxies often lack the luminous emission lines, X-ray ...
7
The nature of faint radio galaxies at high redshifts
... faint radio galaxies at z ∼ 2 − 4 represent a population that is transitioning from being AGN dominated to star-formation ...dio galaxies known in the literature at these redshifts that display ...
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Radio galaxies near the epoch of reionisation
... a radio source and the steepness of its low-frequency radio spectrum (see Ker et ...the radio SED combined with a K-correction is responsible for the apparent corre- ...however, radio sources ...
191
FR II radio galaxies at low frequencies - I. Morphology, magnetic field strength and energetics
... II radio galaxies that suggest that the integrated spectrum at these frequencies may be driven to steeper values due to changes in the magnetic field strength, mix- ing of electron populations and the ...
13
Radio Galaxy Zoo: a search for hybrid morphology radio galaxies
... morphology radio sources ( HyMoRS ) are a rare type of radio galaxy that display different Fanaroff – Riley classes on opposite sides of their ...project, Radio Galaxy Zoo ( RGZ ) ...morphology ...
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