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We conducted 22~GHz 1" JVLA imaging of 100 radio-quiet X-ray selected AGN from the Swift-BAT survey. We find AGN-driven kiloparsec-scale radio structures inconsistent with pure star formation in 11 AGN. The host galaxies of these AGN lie…

Astrophysics of Galaxies · Physics 2020-12-02 Krista Lynne Smith , Michael Koss , Richard Mushotzky , O. Ivy Wong , T. Taro Shimizu , Claudio Ricci , Federica Ricci

Radio emission in the direction of galaxy clusters is due to the individual emission of AGNs, and to the diffuse non-thermal emission of the intracluster medium (ICM). The population of AGNs in clusters is correlated to the overall halo…

Cosmology and Nongalactic Astrophysics · Physics 2011-01-27 J. Lanoux , E. Pointecouteau , M. Giard

We present an analysis of the X-ray Active Galactic Nucleus (AGN) population in a sample of seven massive galaxy clusters in the redshift range $0.35<z<0.45$. We utilize high-quality Chandra X-ray imaging to robustly identify AGN and…

Properties of galaxies depend on their large-scale environment. As the influence of active galactic nuclei (AGN) in galaxy evolution is becoming more evident, their large scale environments may help us understand the evolutionary processes…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 H. Lietzen , P. Heinämäki , P. Nurmi , L. J. Liivamägi , E. Saar , E. Tago , L. O. Takalo , M. Einasto

We present ALMA CO(1-0) and CO(3-2) observations of a powerful young radio galaxy, PKS 0023-26, hosted by a far-infrared bright galaxy. The galaxy has a luminous optical AGN and a very extended distribution of molecular gas. We used these…

Studying the average properties of active galactic nuclei (AGN) host stellar populations is an important step in understanding the role of AGN in galaxy evolution and the processes which trigger and fuel AGN activity. Here we calculate…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Aden R. Draper , David R. Ballantyne

We study the association between active galactic nuclei (AGN) and environment at scales of $0.01-1\ h^{-1}$Mpc in the IllustrisTNG (TNG100) simulated universe. We identify supermassive black hole (BH) pairs and multiples within scales of…

Astrophysics of Galaxies · Physics 2020-12-09 Aklant K. Bhowmick , Laura Blecha , July Thomas

That jetted active galactic nuclei (AGN) are also hosted in spiral galaxies is now well established. Our understanding of how such objects might fit in the radio loud AGN subclass has been described by Foschini and others over the past…

High Energy Astrophysical Phenomena · Physics 2023-06-21 Chandra B. Singh , David Garofalo

Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in proto-clusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, which…

We compute the cross-correlation between a sample of 14,000 radio-loud AGN (RLAGN) with redshifts between 0.4 and 0.8 selected from the Sloan Digital Sky Survey and a reference sample of 1.2 million luminous red galaxies in the same…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-28 Emilio Donoso , Cheng Li , Guinevere Kauffmann , Philip N. Best , Timothy M. Heckman

We present the results of a combined galaxy population analysis for the host galaxies of active galactic nuclei (AGN) identified at 0 < z < 1.4 within the SDSS, Bootes and DEEP2 surveys. We identified AGN in a uniform and unbiased manner at…

The optical Fundamental Plane of black hole activity relates radio continuum luminosity of Active Galactic Nuclei to [O III] luminosity and black hole mass. We examine the environments of low redshift ($z<0.2$) radio-selected AGN,…

Astrophysics of Galaxies · Physics 2018-06-13 Stanislav Shabala

Radio Active Galactic Nuclei (RAGNs) are mainly found in dense structures (i.e., clusters/groups) at redshifts of z$<$2 and are commonly used to detect protoclusters at higher redshift. Here, we attempt to study the host and environmental…

Using 57 Radio Active Galactic nuclei (RAGN) at 0.55 $\leq$ z $\leq$ 1.3 drawn from five fields of the Observations of Redshift Evolution in Large Scale Environments (ORELSE) survey, we study the effect of injection of energy from outbursts…

[Abridged] We present an analysis of optical spectroscopically-identified AGN to M*+1 in a sample of 6 self-similar SDSS galaxy clusters at z=0.07. These clusters are specifically selected to lack significant substructure at bright limits…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 K. A. Pimbblet , S. S. Shabala , C. P. Haines , A. Fraser-McKelvie , D. J. E. Floyd

A new paradigm for active galactic jet kinematics has emerged through detailed investigations of BL Lac objects using very long baseline radio interferometry. In this new scheme, most, if not all, jet components appear to remain stationary…

Cosmology and Nongalactic Astrophysics · Physics 2012-06-20 Marios Karouzos , Silke Britzen , Arno Witzel , Anton J. Zensus , Andreas Eckart

We present a study of the prevalence of optical and radio nuclear activity with respect to the environment and interactions in a sample of SDSS galaxies. We defined a local density parameter and a tidal forces estimator and used a cluster…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 J. Sabater , P. N. Best , M. Argudo-Fernández

Galaxy mergers are likely to play a role in triggering active galactic nuclei (AGN), but the conditions under which this process occurs are poorly understood. In Paper I, we constructed a sample of spatially offset X-ray AGN that represent…

Astrophysics of Galaxies · Physics 2017-04-12 R. Scott Barrows , Julia M. Comerford , Jenny E. Greene , David Pooley

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…

Astrophysics of Galaxies · Physics 2021-02-17 Ting-Wen Lan , J. Xavier Prochaska

We characterize the environments of local accreting supermassive black holes by measuring the clustering of AGN in the Swift/BAT Spectroscopic Survey (BASS). With 548 AGN in the redshift range 0.01<z<0.1 over the full sky from the DR1…

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