Results 1 to 10 of about 1,250,626 (333)

Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters [PDF]

open access: yesThe Astronomical Journal, 2019
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.
Andernach, Heinz   +11 more
core   +7 more sources

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

open access: yesData Brief, 2023
Automated classification of astronomical sources is often challenging due to the scarcity of labelled training data. We present a data set with a total number of 2158 data items that contains radio galaxy images with their corresponding morphological ...
Griese F   +4 more
europepmc   +2 more sources

MRC B0319-454: Probing the large-scale structure with a giant radio galaxy [PDF]

open access: yes, 2008
We present an investigation of the relationships between the radio properties of a giant radio galaxy MRC B0319-454 and the surrounding galaxy distribution with the aim of examining the influence of intergalactic gas and gravity associated with the large-scale structure on the evolution in the radio morphology.
Begelman   +51 more
arxiv   +3 more sources

LOFAR discovery of a 700-kpc remnant radio galaxy at low redshift [PDF]

open access: yes, 2015
Remnant radio galaxies represent the final dying phase of radio galaxy evolution, in which the jets are no longer active. Due to their rarity in flux limited samples and the difficulty of identification, this dying phase remains poorly understood and the
Best, P. N.   +15 more
core   +9 more sources

CNN architecture comparison for radio galaxy classification [PDF]

open access: yes, 2021
The morphological classification of radio sources is important to gain a full understanding of galaxy evolution processes and their relation with local environmental properties.
Burger Becker   +3 more
semanticscholar   +1 more source

Characterizing the Fast Radio Burst Host Galaxy Population and its Connection to Transients in the Local and Extragalactic Universe [PDF]

open access: yesAstronomical Journal, 2021
We present the localization and host galaxies of one repeating and two apparently nonrepeating fast radio bursts (FRBs). FRB 20180301A was detected and localized with the Karl G.
S. Bhandari   +25 more
semanticscholar   +1 more source

Cosmic-Ray Acceleration and Magnetic Fields in Galaxy Clusters and Beyond: Insights from Radio Observations

open access: yesUniverse, 2023
The discovery of diffuse radio emission in galaxy clusters proved the existence of energetic cosmic-ray electrons and cosmic magnetic fields on Mpc-scales in the Universe.
Denis Wittor
doaj   +1 more source

The Dragonfly Galaxy. III. Jet Brightening of a High-redshift Radio Source Caught in a Violent Merger of Disk Galaxies

open access: yesThe Astrophysical Journal, 2023
The Dragonfly galaxy (MRC 0152-209), the most infrared-luminous radio galaxy at redshift z ∼ 2, is a merger system containing a powerful radio source and large displacements of gas.
Sophie Lebowitz   +10 more
doaj   +1 more source

Enigmatic Emission Structure around Mrk 783: Cross-Ionization of a Companion 100 kpc Away

open access: yesUniverse, 2023
Mrk 783 is a narrow-line Seyfert 1 galaxy that possesses a relatively large two-sided radio emission extending up to 14 kpc from the active nucleus possibly connected with a large-scale ionized gas emission. We obtained a deep [O iii] image that revealed
Alexei V. Moiseev   +2 more
doaj   +1 more source

Revisiting the Fanaroff–Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS) [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
The relative positions of the high and low surface brightness regions of radio-loud active galaxies in the 3CR sample were found by Fanaroff and Riley to be correlated with their luminosity.
B. Mingo   +19 more
semanticscholar   +1 more source

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