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Related papers: The large-scale environment of FR 0 radio galaxies

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With the aim of exploring the properties of the class of FR0 radio galaxies, we selected a sample of 108 compact radio sources, called FR0CAT, by combining observations from the NVSS, FIRST, and SDSS surveys. The catalog includes sources…

Astrophysics of Galaxies · Physics 2017-12-27 R. D. Baldi , A. Capetti , F. Massaro

Are the FRI and FRII radio galaxies representative of the radio-loud (RL) AGN population in the local Universe? Recent studies on the local low-luminosity radio sources cast lights on an emerging population of compact radio galaxies which…

Astrophysics of Galaxies · Physics 2016-12-07 Ranieri D. Baldi , Alessandro Capetti , Gabriele Giovannini

We present the results of Karl G. Jansky Very Large Array (VLA) observations to study the properties of FR0 radio galaxies, the compact radio sources associated with early-type galaxies which represent the bulk of the local radio-loud AGN…

Astrophysics of Galaxies · Physics 2018-11-28 Ranieri D. Baldi , Alessandro Capetti , Gabriele Giovannini

FR0s are compact radio sources that represent the bulk of the Radio-Loud (RL) AGN population, but they are still poorly understood. Pilot studies on these sources have been already performed at radio and optical wavelengths: here we present…

High Energy Astrophysical Phenomena · Physics 2018-03-21 Eleonora Torresi , Paola Grandi , Alessandro Capetti , Ranieri D. Baldi , Gabriele Giovannini

A new class of low-power compact radio sources with limited jet structures, named FR0, is emerging from recent radio-optical surveys. This abundant population of radio galaxies, five times more numerous than FRIs in the local Universe…

High Energy Astrophysical Phenomena · Physics 2019-09-11 Ranieri D. Baldi , Eleonora Torresi , Giulia Migliori , Barbara Balmaverde

Radio-loud compact radio sources (CRSs) are characterised by morphological compactness of the jet structure centred on the active nucleus of the galaxy. Most of the local elliptical galaxies are found to host a CRS with nuclear luminosities…

Astrophysics of Galaxies · Physics 2023-07-18 Ranieri D. Baldi

Using the Alternative Data Release of the TIFR GMRT Sky Survey (TGSS), we studied the low-frequency properties of FR0 radio galaxies, the large population of compact radio sources associated with red massive early-type galaxies revealed by…

Astrophysics of Galaxies · Physics 2019-11-20 Alessandro Capetti , Ranieri D. Baldi , Marisa Brienza , Raffaella Morganti , Gabriele Giovannini

So-called FR0 radio galaxies have recently emerged as a family of active galaxies with all the same properties as FRI radio galaxies except for their ratio of core to total emission which is about 30 times as high compared to FRI sources.…

High Energy Astrophysical Phenomena · Physics 2019-02-13 David Garofalo , Chandra B. Singh

Although Fanaroff-Riley (FR) type 0 radio galaxies are known to be the most numerous jet population in the local Universe, they are much less explored than the well-established class of FR I and FR II galaxies due to their intrinsic…

High Energy Astrophysical Phenomena · Physics 2023-10-11 Margot Boughelilba , Anita Reimer

We present the results of a pilot JVLA project aimed at studying the bulk of the radio-emitting AGN population, unveiled by the NVSS/FIRST and SDSS surveys.We obtained A-array observations at the JVLA at 1.4, 4.5, and 7.5 GHz for 12 sources…

Astrophysics of Galaxies · Physics 2015-03-25 Ranieri D. Baldi , Alessandro Capetti , Gabriele Giovannini

We explore the low-frequency radio properties of the sources in the Fanaroff-Riley class 0 catalog (FR0CAT) as seen by the LOw Frequency ARray (LOFAR) observations at 150 MHz. This sample includes 104 compact radio active galactic nuclei…

In our previous analysis we investigated the large-scale environment of two samples of radio galaxies (RGs) in the local Universe (i.e. with redshifts z<0.15), classified as FR I and FR II on the basis of their radio morphology. The…

High Energy Astrophysical Phenomena · Physics 2020-04-16 F. Massaro , A. Capetti , A. Paggi , R. D. Baldi , A. Tramacere , I. Pillitteri , R. Campana , A. Jimenez-Gallardo , V. Missaglia

The local radio-loud AGN population is dominated by compact sources named FR0s. These sources show features, for example the host type, the mass of the supermassive black hole (SMBH), and the multi-band nuclear characteristics, that are…

Astrophysics of Galaxies · Physics 2023-04-12 G. Giovannini , R. D. Baldi , A. Capetti , M. Giroletti , R. Lico

Recently a population of compact radio galaxies were classified as Fanaroff-Riley type 0 radio galaxies (FR 0s). The physical nature of FR 0s and the connection with the classical FR I and II galaxies are not currently well understood.…

High Energy Astrophysical Phenomena · Physics 2018-08-29 X. -P. Cheng , T. An

We present a search for FRI radio galaxies between 1 < z < 2 in the COSMOS field. In absence of spectroscopic redshift measurements, the selection method is based on multiple steps which make use of both radio and optical constraints. The…

Cosmology and Nongalactic Astrophysics · Physics 2010-05-12 Marco Chiaberge , Grant Tremblay , Alessandro Capetti , F. Duccio Macchetto , Paolo Tozzi , William B. Sparks

In the local Universe, high-power radio galaxies live in lower density environments than low-luminosity radio galaxies. If this trend continues to higher redshifts, powerful radio galaxies would serve as efficient probes of moderate…

Astrophysics · Physics 2009-11-13 M. W. Auger , R. H. Becker , C. D. Fassnacht

A sample of FRII radio sources in rich clusters of galaxies, both at high (z$\sim$0.5) and low (z$\sim$0) redshift, has been constructed to study the effect of environment on radio sources. Comparisons are made between the properties of…

Astrophysics · Physics 2007-05-23 Lin Wan , Ruth A. Daly

FR0 galaxies constitute the most abundant jet population in the local Universe. With their compact jet structure, they are broadband photon emitters and have been proposed as multi-messenger sources. Recently, these sources have been…

Correlations between jet power and active time for z < 0.1 high excitation and low excitation radio galaxies are explored as well as evidence in favor of a specific, non-random distribution for these objects including mid-infrared emitting…

High Energy Astrophysical Phenomena · Physics 2018-11-14 David Garofalo , Chandra B. Singh , Alexa Zack

We present results of a study of large-scale neutral hydrogen (HI) gas in nearby radio galaxies. We find that the early-type host galaxies of different types of radio sources (compact, FR-I and FR-II) appear to contain fundamentally…

Astrophysics · Physics 2008-02-01 Bjorn Emonts , Raffaella Morganti , Tom Oosterloo , Jacqueline van Gorkom
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