The 3CR Chandra Snapshot Survey: Extragalactic Radio Sources with Redshifts between 1 and 1.5

Stuardi, C.; Missaglia, V.; Massaro, F.; Ricci, F.; Liuzzo, E.; Paggi, A.; Kraft, Ralph; Tremblay, G. R.; Baum, Stefi A.; O’Dea, C. P.; Wilkes, B. J.; Kuraszkiewicz, Joanna; Forman, W.; Harris, D. E.

doi:10.3847/1538-4365/aaafcf

Cited by 32 publications

(29 citation statements)

References 72 publications

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“…The Chandra flux map has been built adopting the same procedure adopted for the 3CR Chandra Snapshot Survey (see e.g. Massaro et al 2010Massaro et al , 2013Massaro et al , 2015Stuardi et al 2018;Jimenez-Gallardo et al 2020 for additional details), as well as adopting the FLUXIMAGE task of CIAO. Finally, we highlight that the readout streak, present in the Chandra observation given the relatively high flux of the X-ray nucleus, was also removed in the image shown in Fig.…”

Section: S U M M a Ry A N D C O N C L U S I O N Smentioning

confidence: 99%

Hard X-ray selected giant radio galaxies – III. The LOFAR view

Bruni

Brienza

Panessa

et al. 2021

Monthly Notices of the Royal Astronomical Society

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Giant radio galaxies (GRGs), with extended structures reaching hundreds of kpc, are among the most spectacular examples of ejection of relativistic plasma from supermassive black holes. In this work, third of a series, we present LOw Frequency ARray (LOFAR) images at 144 MHz, collected in the framework of the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS DR2), for nine sources extracted from our sample of hard X-ray selected GRGs (HXGRG, i.e. from INTEGRAL/IBIS and Swift/BAT catalogues at >20 keV). Thanks to the resolution and sensitivity of LoTSS, we could probe the complex morphology of these GRGs, unveiling cases with diffuse (Mpc-scale) remnant emission, presence of faint off-axis wings, or a misaligned inner jet. In particular, for one source (B2 1144+35B), we could clearly detect a ∼300 kpc wide off-axis emission, in addition to an inner jet which orientation is not aligned with the lobes axis. For another source (J1153.9+5848) a structure consistent with jet precession was revealed, appearing as an X-shaped morphology with relic lobes having an extension larger than the present ones, and with a different axis orientation. From an environment analysis, we found 2 sources showing an overdensity of cosmological neighbours, and a correspondent association with a galaxy cluster from catalogues. Finally, a comparison with radio-selected GRGs from LoTSS DR1 suggested that, on average, HXGRG can grow to larger extents. These results highlight the importance of deep low-frequency observations to probe the evolution of radio galaxies, and ultimately estimate the duty cycle of their jets.

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Section: S U M M a Ry A N D C O N C L U S I O N Smentioning

confidence: 99%

Hard X-ray selected giant radio galaxies – III. The LOFAR view

Bruni

Brienza

Panessa

et al. 2021

Monthly Notices of the Royal Astronomical Society

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“…The X-ray data of the remaining 25 sources (twentytwo 3C sources, PKS B1421-490, PKS 1413+135, and PKS 0237-23) have been analyzed and published in various papers (Massaro et al 2010(Massaro et al , 2011(Massaro et al , 2012Hardcastle et al 2012;Massaro et al 2013Massaro et al , 2015Stuardi et al 2018;Henley et al 2010). However, these works mainly focused on either only the flux (e.g., Massaro et al 2015) or the extended X-ray emission.…”

Section: X-raymentioning

confidence: 99%

The X-ray emission in young radio AGNs

Liao,

Gu,

Zhou

et al. 2020

Preprint

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In this work, we investigated the X-ray emission for a sample of young radio AGNs by combining their data from Chandra/XMM-Newton and at other wavebands. We find strong correlations between the X-ray luminosity L X in 2−10 keV and the radio luminosities L R at 5 GHz for VLBI radio-core, VLA radio-core and FIRST component, indicating that both pc-and kpc-scale radio emission strongly correlate with X-ray emission in these sources. We find approximately linear dependence of radio on X-ray luminosity in the sources with radiative efficient accretion flows (i.e., the Eddington ratio R edd 10 −3 ) with b ∼ 1 (L R ∝ L b X ) and ξ RX ∼ 1 in fundamental plane using VLBI data, where the dependence is consistent with the re-analysed result on the previous study in Fan & Bai (2016) at R edd 10 −3 , however is significantly deviated from the theoretical prediction of accretion flow as the origin of X-ray emission. In contrast to radio-quiet quasars, there is no significant correlation between Γ and Eddington ratio. Our results seem to indicate that the X-ray emission of high-accreting young radio AGNs may be from jet. We constructed the SEDs for 18 sources (most are in radiative efficient accretion) including 9 galaxies and 9 quasars with high-quality X-ray data, and find that the X-ray emission of most quasars is more luminous than that of normal radio-quiet quasars. This is clearly seen from the quasar composite SED, of which the X-ray emission is apparently higher than that of radio-quiet quasars, likely supporting the jet-related X-ray emission in young radio AGNs. The scenario that the X-ray emission is from self-synchrotron Compton (SSC) is discussed.

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“…The complete high-z 3C sample of 64 sources has been observed at X-rays with Chandra and some with XMM. The observations in the Chandra Data Archive have been reinvestigated by Wilkes et al (2013), Massaro et al (2015), Stuardi et al (2018), andJimenez-Gallardo et al (2020). The advantage of Chandra is its high spatial resolution, while XMM is more sensitive to faint extended emission provided that this emission is not outshone by bright embedded point sources.…”

Section: Comparison With X-ray and Sunyaev-zel'dovichmentioning

confidence: 99%

Clustering of red and blue galaxies around high-redshift 3C radio sources as seen by the Hubble Space Telescope

Ghaffari,

Haas,

Chiaberge

et al. 2020

Preprint

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Galaxy surface density maps reveal the clustering of red and blue galaxies around 3C radio galaxies and quasars at 1 < z < 2.5. The maps are made from optical and near-infrared HS T images with a 2 ′ field-of-view, where the filters encompass the 4000 Å break. 16 of 21 radio sources lie inside a galaxy overdensity of less than 250 kpc (30 ′′ ) projected radius; the overdensity is defined as 3σ above the mean galaxy density of the periphery (30 ′′ − 60 ′′ ). We find a spatial galaxy segregation with brightness and color as well as evolution with redshift. At z < 1.5, the overdensity is dominated by red galaxies, while blue galaxies are more frequent in the periphery. With a few exceptions, the fainter galaxies contributing to the overdensity are bluer than the brighter galaxies. The derived number of central luminous red galaxies is comparable to that of the Coma cluster core. This and the brightness and color segregation of candidate cluster member galaxies leads us to conclude that at 1 < z < 1.5 the 3C sources are not just becoming galaxy groups. Rather we suggest that the foundation of a galaxy cluster with luminous red galaxies has largely been set, and the formation of the red sequence is still going on from a reservoir of blue galaxies in the periphery. At z > 1.5, overdensities are less frequent and progressively composed of blue galaxies. Compared to z < 1.5, the lower galaxy concentration and bluer nature of potential cluster member galaxies indicate that a 3C cluster at z > 1.5 is in an earlier assembly phase. The clustering of galaxies around high-redshift 3C sources appears to precede with a few exceptions the assembly of detectable mass concentrations and of extended hot X-ray gas found for most of the lower-redshift 3C sources.

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The 3CR Chandra Snapshot Survey: Extragalactic Radio Sources with Redshifts between 1 and 1.5

Cited by 32 publications

References 72 publications

Hard X-ray selected giant radio galaxies – III. The LOFAR view

Hard X-ray selected giant radio galaxies – III. The LOFAR view

The X-ray emission in young radio AGNs

Clustering of red and blue galaxies around high-redshift 3C radio sources as seen by the Hubble Space Telescope

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