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We present an overview of galaxy evolution across cosmic time in the Illustris Simulation. Illustris is an N-body/hydrodynamical simulation that evolves 2*1820^3 resolution elements in a (106.5Mpc)^3 box from cosmological initial conditions…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-26 Shy Genel , Mark Vogelsberger , Volker Springel , Debora Sijacki , Dylan Nelson , Greg Snyder , Vicente Rodriguez-Gomez , Paul Torrey , Lars Hernquist

In this study, we present a detailed, statistical analysis of black hole growth and the evolution of active galactic nuclei (AGN) using cosmological hydrodynamic simulations run down to $z=0$. The simulations self-consistently follow…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Michaela Hirschmann , Klaus Dolag , Alexandro Saro , Lisa Karin Bachmann , Stefano Borgani , Andreas Burkert

We introduce the Illustris Project, a series of large-scale hydrodynamical simulations of galaxy formation. The highest resolution simulation, Illustris-1, covers a volume of $(106.5\,{\rm Mpc})^3$, has a dark mass resolution of ${6.26…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 Mark Vogelsberger , Shy Genel , Volker Springel , Paul Torrey , Debora Sijacki , Dandan Xu , Gregory F. Snyder , Dylan Nelson , Lars Hernquist

High-redshift active galactic nuclei (AGN) have long been recognized as key probes of early black hole growth and galaxy evolution. However, modeling this population remains difficult due to the wide range of luminosities and black hole…

In large-scale hydrodynamical cosmological simulations, the fate of massive galaxies is mainly dictated by the modeling of feedback from active galactic nuclei (AGN). The amount of energy released by AGN feedback is proportional to the mass…

We use the high-resolution cosmological simulation Illustris to investigate the clustering of supermassive black holes across cosmic time, the link between black hole clustering and host halo masses, and the implications for black hole duty…

Astrophysics of Galaxies · Physics 2017-02-01 Colin DeGraf , Debora Sijacki

We analyse the demographics of black holes (BHs) in the large-volume cosmological hydrodynamical simulation Horizon-AGN. This simulation statistically models how much gas is accreted onto BHs, traces the energy deposited into their…

Astrophysics of Galaxies · Physics 2016-07-27 Marta Volonteri , Yohan Dubois , Christophe Pichon , Julien Devriendt

We investigate the evolution of supermassive black holes in the `Evolution and Assembly of GaLaxies and their Environments' (EAGLE) cosmological hydrodynamic simulations. The largest of the EAGLE volumes covers a $(100 \,\rm cMpc)^3$ and…

Recent systematic searches for massive black holes (BHs) in local dwarf galaxies led to the discovery of a population of faint Active Galactic Nuclei (AGN). We investigate the agreement of the BH and AGN populations in the Illustris, TNG,…

We study the connection between active galactic nuclei (AGN) and their host galaxies through cosmic time in the large-scale cosmological IllustrisTNG simulations. We first compare BH properties, i.e. the hard X-ray BH luminosity function,…

We study the spiral arm morphology of a sample of the local spiral galaxies in the Illustris simulation and explore the supermassive black hole - galaxy connection beyond the bulge (e.g., spiral arm pitch angle, total stellar mass, dark…

Astrophysics of Galaxies · Physics 2017-12-27 Burçin Mutlu-Pakdil , Marc S. Seigar , Ian B. Hewitt , Patrick Treuthardt , Joel C. Berrier , Lauren E. Koval

We construct evolutionary models of the populations of AGN and supermassive black holes, in which the black hole mass function grows at the rate implied by the observed luminosity function, given assumptions about the radiative efficiency…

Astrophysics · Physics 2010-05-27 Francesco Shankar , David H. Weinberg , Jordi Miralda-Escude'

We present the first study of evolution of galaxy groups in the Illustris simulation. We focus on dynamically relaxed and unrelaxed galaxy groups representing dynamically evolved and evolving galaxy systems, respectively. The evolutionary…

Astrophysics of Galaxies · Physics 2016-06-29 Mojtaba Raouf , Habib G. Khosroshahi , Ali A. Dariush

We present the full public release of all data from the Illustris simulation project. Illustris is a suite of large volume, cosmological hydrodynamical simulations run with the moving-mesh code Arepo and including a comprehensive set of…

We examine the relationship between galaxies, supermassive black holes and AGN using a sample of 22,000 narrow-emission-line AGN drawn from a a sample of 122,000 galaxies from the Sloan Digital Sky Survey. We have studied how AGN host…

Astrophysics · Physics 2009-11-10 Guinevere Kauffmann , Timothy Heckman

The interpretive power of the newest generation of large-volume hydrodynamical simulations of galaxy formation rests upon their ability to reproduce the observed properties of galaxies. In this second paper in a series, we employ bulge+disc…

Astrophysics of Galaxies · Physics 2017-03-17 Connor Bottrell , Paul Torrey , Luc Simard , Sara L. Ellison

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 likelihood fitting technique. The study of the active black…

The James Webb Space Telescope will have the power to characterize high-redshift quasars at z>6 with an unprecedented depth and spatial resolution. While the brightest quasars at such redshift (i.e., with bolometric luminosity L_bol> 10^46…

We have determined the cosmological evolution of the density of AGN and of their Nh distribution as a function of the un-absorbed 2-10 keV luminosity up to redshift 4. We used the HELLAS2XMM sample combined with other published catalogs,…

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