X-ray Luminosity function of Active Galactic Nuclei in Galaxy clusters

2009 ◽  
Author(s):  
Yuxuan Yang ◽  
Joseph J. Mohr ◽  
Tim O’Hara ◽  
Sebastian Heinz ◽  
Eric Wilcots
Keyword(s):  
Active Galactic Nuclei ◽  
Galaxy Clusters ◽  
Luminosity Function ◽  
Galactic Nuclei ◽  
X Ray

scholarly journals The X-ray luminosity function of active galactic nuclei in the redshift intervalz=3-5

2015 ◽  
Vol 453 (2) ◽  
pp. 1946-1964 ◽  
Author(s):  
A. Georgakakis ◽  
J. Aird ◽  
J. Buchner ◽  
M. Salvato ◽  
M.-L. Menzel ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Luminosity Function ◽  
Galactic Nuclei ◽  
X Ray

scholarly journals The hard X-ray luminosity function of high-redshift (3 < z ≲ 5) active galactic nuclei

2014 ◽  
Vol 445 (4) ◽  
pp. 3557-3574 ◽  
Author(s):  
F. Vito ◽  
R. Gilli ◽  
C. Vignali ◽  
A. Comastri ◽  
M. Brusa ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Luminosity Function ◽  
High Redshift ◽  
Galactic Nuclei ◽  
X Ray

scholarly journals The impact of disturbed galaxy clusters on the kinematics of active galactic nuclei

2020 ◽  
Vol 499 (3) ◽  
pp. 3792-3805
Author(s):  
Lawrence E Bilton ◽  
Kevin A Pimbblet ◽  
Yjan A Gordon
Keyword(s):  
Active Galactic Nuclei ◽  
Galaxy Clusters ◽  
Velocity Dispersion ◽  
Signal To Noise Ratio ◽  
Galactic Nuclei ◽  
Sloan Digital Sky Survey ◽  
X Ray ◽  
Cluster Galaxies ◽  
Sky Survey ◽  
The Impact

ABSTRACT We produce a kinematic analysis of AGN-hosting cluster galaxies from a sample of 33 galaxy clusters selected using the X-ray Clusters Database (BAX) and populated with galaxies from the Sloan Digital Sky Survey Data Release 8. The 33 galaxy clusters are delimited by their relative intensity of member galaxy substructuring as a proxy to core merging to derive two smaller sub-samples of 8 dynamically active (merging) and 25 dynamically relaxed (non-merging) states. The AGN were selected for each cluster sub-sample by employing the WHAN diagram to the strict criteria of log10([N ii]/Hα) ≥ −0.32 and EWHα ≥ 6 Å, providing pools of 70 mergings and 225 non-merging AGN sub-populations. By co-adding the clusters to their respective dynamical states to improve the signal-to-noise ratio of our AGN sub-populations we find that merging galaxy clusters on average host kinematically active AGN between 0–1.5r200 as r200 → 0, where their velocity dispersion profile (VDP) presents a significant deviation from the non-AGN sub-population VDP by ≳3σ. This result is indicative that the AGN-hosting cluster galaxies have recently coalesced on to a common potential. Further analysis of the composite distributions illustrates non-merging AGN-hosting sub-populations have, on average, already been accreted and predominantly lie within backsplash regions of the projected phase-space. This suggests merging cluster dynamical states hold relatively younger AGN sub-populations kinematically compared with those found in non-merging cluster dynamical states.

scholarly journals X-ray bright active galactic nuclei in massive galaxy clusters – I. Number counts and spatial distribution

2012 ◽  
Vol 428 (4) ◽  
pp. 3509-3525 ◽  
Author(s):  
S. Ehlert ◽  
S. W. Allen ◽  
W. N. Brandt ◽  
Y. Q. Xue ◽  
B. Luo ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Active Galactic Nuclei ◽  
Galaxy Clusters ◽  
Galactic Nuclei ◽  
X Ray ◽  
Number Counts ◽  
Massive Galaxy

scholarly journals THENuSTAREXTRAGALACTIC SURVEY: FIRST DIRECT MEASUREMENTS OF THE ≳10 keV X-RAY LUMINOSITY FUNCTION FOR ACTIVE GALACTIC NUCLEI ATz> 0.1

2015 ◽  
Vol 815 (1) ◽  
pp. 66 ◽  
Author(s):  
J. Aird ◽  
D. M. Alexander ◽  
D. R. Ballantyne ◽  
F. Civano ◽  
A. Del-Moro ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Luminosity Function ◽  
Galactic Nuclei ◽  
X Ray ◽  
Direct Measurements

scholarly journals The luminosity function evolution of soft X-ray-selected active galactic nuclei in the RIXOS survey

1996 ◽  
Vol 281 (2) ◽  
pp. 579-590 ◽  
Author(s):  
M. J. Page ◽  
F. J. Carrera ◽  
G. Hasinger ◽  
K. O. Mason ◽  
R. G. McMahon ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Luminosity Function ◽  
Galactic Nuclei ◽  
X Ray

scholarly journals Spectral Statistics and Local Luminosity Function of a Complete Hard X-Ray Sample of the Brightest Active Galactic Nuclei

2006 ◽  
Vol 131 (6) ◽  
pp. 2843-2858 ◽  
Author(s):  
K. Shinozaki ◽  
T. Miyaji ◽  
Y. Ishisaki ◽  
Y. Ueda ◽  
Y. Ogasaka
Keyword(s):  
Active Galactic Nuclei ◽  
Luminosity Function ◽  
Galactic Nuclei ◽  
X Ray ◽  
Spectral Statistics

scholarly journals The XXL Survey

2018 ◽  
Vol 620 ◽  
pp. A6 ◽  
Author(s):  
O. Melnyk ◽  
A. Elyiv ◽  
V. Smolčić ◽  
M. Plionis ◽  
E. Koulouridis ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Galaxy Clusters ◽  
Large Scale ◽  
Galactic Nuclei ◽  
Small Scale ◽  
Radio Sources ◽  
Large Area ◽  
Distance Method ◽  
X Ray ◽  
Structure Information

Context. This work is part of a series of studies focusing on the environment and the properties of the X-ray selected active galactic nuclei (AGN) population from the XXL survey. The present survey, given its large area, continuity, extensive multiwavelength coverage, and large-scale structure information, is ideal for this kind of study. Here, we focus on the XXL-South (XXL-S) field. Aims. Our main aim is to study the environment of the various types of X-ray selected AGN and investigate its possible role in AGN triggering and evolution. Methods. We studied the large-scale (>1 Mpc) environment up to redshift z = 1 using the nearest neighbour distance method to compare various pairs of AGN types. We also investigated the small-scale environment (<0.4 Mpc) by calculating the local overdensities of optical galaxies. In addition, we built a catalogue of AGN concentrations with two or more members using the hierarchical clustering method and we correlated them with the X-ray galaxy clusters detected in the XXL survey. Results. It is found that radio detected X-ray sources are more obscured than non-radio ones, though not all radio sources are obscured AGN. We did not find any significant differences in the large-scale clustering between luminous and faint X-ray AGN, or between obscured and unobscured ones, or between radio and non-radio sources. At local scales (<0.4 Mpc), AGN typically reside in overdense regions, compared to non-AGN; however, no differences were found between the various types of AGN. A majority of AGN concentrations with two or more members are found in the neighbourhood of X-ray galaxy clusters within <25–45 Mpc. Our results suggest that X-ray AGN are typically located in supercluster filaments, but they are also found in over- and underdense regions.

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