417 citations · 1.8k across the 23 of their papers we have counts for
23 papers
Too many or too massive? Investigating the high- demography of active SMBHs from JWST
Daniel Roberts, Francesco Shankar, Vieri Cammelli +12
Recent JWST observations have unveiled a numerous population of low-luminosity active galactic nuclei (AGN) at , with space densities roughly an order of magnitude above p…
The miniJPAS Survey: The radial distribution of star formation rates in faint X-ray active galactic nuclei
Nischal Acharya, Silvia Bonoli, Mara Salvato +35
We study the impact of black hole nuclear activity on both the global and radial star formation rate (SFR) profiles in X-ray-selected active galactic nuclei (AGN) in the field of m…
Ionised AGN outflows in the Goldfish galaxy -- The illuminating and interacting red quasar eFEDSJ091157.4+014327 at z 0.6
Blessing Musiimenta, Giovanna Speranza, Tanya Urrutia +12
Evolutionary models suggest that the initial growth phases of active galactic nuclei (AGN) are dust-enshrouded, and characterised by jet/wind outflows that should gradually clear t…
Obscuration beyond the nucleus: infrared quasars can be buried in extreme compact starbursts
Carolina Andonie, David M. Alexander, Claire Greenwell +14
In the standard quasar model, the accretion disk obscuration is due to the canonical dusty torus. Here, we argue that a substantial part of the quasar obscuration can come from the…
A new discovery space opened by eROSITA: Ionised AGN outflows from X-ray selected samples
Blessing Musiimenta, Marcella Brusa, Teng Liu +21
In the context of an evolutionary model, the outflow phase of an Active Galactic Nuclei (AGN) occurs at the peak of its activity, once the central SMBH is massive enough to generat…
Large-scale clustering of buried X-ray AGN: Trends in AGN obscuration and redshift evolution
Akke Viitanen, Viola Allevato, Alexis Finoguenov +4
In order to test active galactic nucleus (AGN) unification and evolutionary models, we measured the AGN clustering properties as a function of AGN obscuration defined in terms of h…
Cosmic evolution of the incidence of Active Galactic Nuclei in massive clusters: Simulations versus observations
Iván Muñoz Rodríguez, Antonis Georgakakis, Francesco Shankar +5
This paper explores the role of small-scale environment ( Mpc) in modulating accretion events onto supermassive black holes by studying the incidence of Active Galactic Nuclei…
A panchromatic view of infrared quasars: excess star formation and radio emission in the most heavily obscured systems
Carolina Andonie, David M. Alexander, David Rosario +13
To understand the Active Galactic Nuclei (AGN) phenomenon and their impact on the evolution of galaxies, a complete AGN census is required; however, finding heavily obscured AGNs i…
Accretion History of AGN III: Radiative Efficiency and AGN Contribution to Reionization
Tonima Tasnim Ananna, C. Megan Urry, Ezequiel Treister +6
The cosmic history of supermassive black hole (SMBH) growth is important for understanding galaxy evolution, reionization and the physics of accretion. Recent NuSTAR, Swift-BAT and…
Local AGN Survey (LASr): I. Galaxy sample, infrared colour selection and predictions for AGN within 100 Mpc
D. Asmus, C. L. Greenwell, P. Gandhi +12
In order to answer some of the major open questions in the fields of supermassive black hole (SMBH) and galaxy evolution, a complete census of SMBH growth, i.e., active galactic nu…
The Chandra COSMOS Legacy Survey: clustering dependence of Type 2 AGN on host galaxy properties
V. Allevato, A. Viitanen, A. Finoguenov +10
Aims. We perform clustering measurements of 800 X-ray selected Chandra COSMOS Legacy (CCL) Type 2 AGN with known spectroscopic redshift to probe the halo mass dependence on AGN hos…
Cosmological simulations of black hole growth II: how (in)significant are merger events for fuelling nuclear activity?
Lisa K. Steinborn, Michaela Hirschmann, Klaus Dolag +5
Which mechanism(s) are mainly driving nuclear activity in the centres of galaxies is a major unsettled question. In this study, we investigate the statistical relevance of galaxy m…
Constraining the UV emissivity of AGN throughout cosmic time via X-ray surveys
F. Ricci, S. Marchesi, F. Shankar +2
The cosmological process of hydrogen (HI) reionization in the intergalactic medium is thought to be driven by UV photons emitted by star-forming galaxies and ionizing active galact…
The Chandra COSMOS Legacy Survey: Clustering of X-ray selected AGN at 2.9<z<5.5 using photometric redshift Probability Distribution Functions
V. Allevato, F. Civano, A. Finoguenov +16
We present the measurement of the projected and redshift space 2-point correlation function (2pcf) of the new catalog of Chandra COSMOS-Legacy AGN at 2.9z5.5 ($\langle…
The optical-UV emissivity of quasars: dependence on black hole mass and radio loudness
Francesco Shankar, Giorgio Calderone, Christian Knigge +15
We analyzed a large sample of radio-loud and radio-quiet quasar spectra at redshift 1.0 < z < 1.2 to compare the inferred underlying quasar continuum slopes (after removal of the h…
The cosmic growth of the active black hole population at 1<z<2 in zCOSMOS, VVDS and SDSS
A. Schulze, A. Bongiorno, I. Gavignaud +11
We present a census of the active black hole population at 1<z<2, by constructing the bivariate distribution function of black hole mass and Eddington ratio, employing a maximum li…
The Hot and Energetic Universe: The formation and growth of the earliest supermassive black holes
James Aird, Andrea Comastri, Marcella Brusa +18
A crucial challenge in astrophysics over the coming decades will be to understand the origins of supermassive black holes (SMBHs) that lie at the centres of most, if not all, galax…
The Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission
Kirpal Nandra, Didier Barret, Xavier Barcons +237
This White Paper, submitted to the recent ESA call for science themes to define its future large missions, advocates the need for a transformational leap in our understanding of tw…
Seeking for the leading actor on the cosmic stage: Galaxies versus Supermassive Black Holes
Angela Bongiorno, Francesco Shankar, Francesca Civano +2
We present a Special Issue on the interplay of galaxies and Supermassive Black Holes (SMBHs) recently published in Advances in Astronomy. This is the introductory paper containing…
Occupation of X-ray selected galaxy groups by X-ray AGN
V. Allevato, A. Finoguenov, G. Hasinger +12
We present the first direct measurement of the mean Halo Occupation Distribution (HOD) of X-ray selected AGN in the COSMOS field at z < 1, based on the association of 41 XMM and 17…
Accreting SMBHs in the COSMOS field and the connection to their host galaxies
A. Bongiorno, A. Merloni, M. Brusa +22
Using the wide multi-band photometry available in the COSMOS field we explore the host galaxy properties of a large sample of Active Galactic Nuclei (AGN) obtained by combining X-r…
Bolometric luminosities and Eddington ratios of X-ray selected Active Galactic Nuclei in the XMM-COSMOS survey
E. Lusso, A. Comastri, B. D. Simmons +25
Bolometric luminosities and Eddington ratios of both X-ray selected broad-line (Type-1) and narrow-line (Type-2) AGN from the XMM-Newton survey in the COSMOS field are presented. T…
The XMM-Newton Wide field survey in the COSMOS field: redshift evolution of AGN bias and subdominant role of mergers in triggering moderate luminosity AGN at redshift up to 2.2
V. Allevato, A. Finoguenov, N. Cappelluti +14
We present a study of the redshift evolution of the projected correlation function of 593 X-ray selected AGN with I_AB<23 and spectroscopic redshifts z<4, extracted from the 0.5-2…