Fabio Governato
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View article: Erratum: “Wandering Supermassive Black Holes in Milky-Way-mass Halos” (2018, ApJL, 857, L22)
Erratum: “Wandering Supermassive Black Holes in Milky-Way-mass Halos” (2018, ApJL, 857, L22) Open
International audience
View article: Preferential Accretion in the Supermassive Black Holes of Milky Way-size Galaxies Due to Direct Feeding by Satellites
Preferential Accretion in the Supermassive Black Holes of Milky Way-size Galaxies Due to Direct Feeding by Satellites Open
Using a new, high-resolution cosmological hydrodynamic simulation of a Milky Way-type (MW-type) galaxy, we explore how a merger-rich assembly history affects the mass budget of the central supermassive black hole (SMBH). We examine a MW-ma…
View article: Wandering Supermassive Black Holes in Milky-Way-mass Halos
Wandering Supermassive Black Holes in Milky-Way-mass Halos Open
We present a self-consistent prediction from a large-scale cosmological simulation for the population of “wandering” supermassive black holes (SMBHs) of mass greater than 10 6 M ⊙ on long-lived, kpc-scale orbits within Milky Way (MW)-mass …
View article: Dancing to changa: a self-consistent prediction for close SMBH pair formation time-scales following galaxy mergers
Dancing to changa: a self-consistent prediction for close SMBH pair formation time-scales following galaxy mergers Open
We present the first self-consistent prediction for the distribution of\nformation timescales for close Supermassive Black Hole (SMBH) pairs following\ngalaxy mergers. Using ROMULUS25, the first large-scale cosmological simulation\nto accu…
View article: How to Reconcile the Observed Velocity Function of Galaxies with Theory
How to Reconcile the Observed Velocity Function of Galaxies with Theory Open
Within a Λ cold dark matter (ΛCDM) scenario, we use high-resolution cosmological simulations spanning over four orders of magnitude in galaxy mass to understand the deficit of dwarf galaxies in observed velocity functions (VFs). We measure…
View article: Constraining the Nature of Dark Matter with the Star-formation History of the Faintest Local Group Dwarf Galaxy Satellites
Constraining the Nature of Dark Matter with the Star-formation History of the Faintest Local Group Dwarf Galaxy Satellites Open
Λ warm dark matter (ΛWDM), realized by collisionless particles of 1–3 keV, has been proposed as an alternative scenario to Λ-Cold-Dark Matter (ΛCDM) for the dwarf galaxy scale discrepancies. We present an approach to test the viability of …
View article: Going, going, gone dark: Quantifying the scatter in the faintest dwarf galaxies
Going, going, gone dark: Quantifying the scatter in the faintest dwarf galaxies Open
We predict the stellar mass-halo mass (SMHM) relationship for dwarf galaxies and their satellites residing in halos down to M$_{halo} =$ 10$^7$ M$_{\odot}$ with 10$^4$ M$_{\odot} 10^9$ M$_{\odot}$, the simulated SMHM relationship agrees wi…
View article: The Romulus cosmological simulations: a physical approach to the formation, dynamics and accretion models of SMBHs
The Romulus cosmological simulations: a physical approach to the formation, dynamics and accretion models of SMBHs Open
We present a novel implementation of supermassive black hole (SMBH)\nformation, dynamics, and accretion in the massively parallel tree+SPH code,\nChaNGa. This approach improves the modeling of SMBHs in fully cosmological\nsimulations, allo…
View article: A rumble in the dark: signatures of self-interacting dark matter in supermassive black hole dynamics and galaxy density profiles
A rumble in the dark: signatures of self-interacting dark matter in supermassive black hole dynamics and galaxy density profiles Open
We explore for the first time the effect of self-interacting dark matter\n(SIDM) on the dark matter (DM) and baryonic distribution in massive galaxies\nformed in hydrodynamical cosmological simulations, including explicit baryonic\nphysics…
View article: The little Galaxies that could (reionize the universe): predicting faint end slopes & escape fractions at z>4
The little Galaxies that could (reionize the universe): predicting faint end slopes & escape fractions at z>4 Open
The sources that reionized the universe are still unknown, but likely\ncandidates are faint but numerous galaxies. In this paper we present results\nfrom running a high resolution, uniform volume simulation, the Vulcan, to\npredict the num…
View article: Particle tagging and its implications for stellar population dynamics
Particle tagging and its implications for stellar population dynamics Open
We establish a controlled comparison between the properties of galactic stellar haloes obtained with hydrodynamical simulations and with ‘particle tagging’. Tagging is a fast way to obtain stellar population dynamics: instead of tracking g…
View article: Quantifying the origin and distribution of intracluster Light in a Fornax-Like Cluster
Quantifying the origin and distribution of intracluster Light in a Fornax-Like Cluster Open
Using a cosmological $N$-body simulation, we investigate the origin and\ndistribution of stars in the intracluster light (ICL) of a Fornax-like cluster.\nIn a dark matter only simulation we identify a halo which, at $z=0$, has $M_200\n\\si…
View article: ASSESSING ASTROPHYSICAL UNCERTAINTIES IN DIRECT DETECTION WITH GALAXY SIMULATIONS
ASSESSING ASTROPHYSICAL UNCERTAINTIES IN DIRECT DETECTION WITH GALAXY SIMULATIONS Open
We study the local dark matter velocity distribution in simulated Milky Way-mass galaxies, generated at high resolution with both dark matter and baryons. We find that the dark matter in the solar neighborhood is influenced appreciably by …
View article: How to quench a galaxy
How to quench a galaxy Open
We show how the interplay between active galactic nuclei (AGNs) and merger history determines whether a galaxy quenches star formation (SF) at high redshift. We first simulate, in a full cosmological context, a galaxy of total dynamical ma…
View article: Cosmological Hydrodynamic Simulations of Preferential Accretion in the SMBH of Milky Way Size Galaxies
Cosmological Hydrodynamic Simulations of Preferential Accretion in the SMBH of Milky Way Size Galaxies Open
Using a new, high-resolution cosmological hydrodynamic simulation of a Milky Way-type (MW-type) galaxy, we explore how a merger-rich assembly history affects the mass budget of the central supermassive black hole (SMBH). We examine a MW-ma…
View article: The effects of host galaxy properties on merging compact binaries detectable by LIGO
The effects of host galaxy properties on merging compact binaries detectable by LIGO Open
Cosmological simulations of galaxy formation can produce present-day galaxies\nwith a large range of assembly and star formation histories. A detailed study\nof the metallicity evolution and star formation history of such simulations can\n…
View article: Black hole starvation and bulge evolution in a Milky Way-like galaxy
Black hole starvation and bulge evolution in a Milky Way-like galaxy Open
We present a new zoom-in hydrodynamical simulation, "Erisbh", which follows\nthe cosmological evolution and feedback effects of a supermassive black hole at\nthe center of a Milky Way-type galaxy. ErisBH shares the same initial\nconditions…
View article: Comparison of black hole growth in galaxy mergers with gasoline and ramses
Comparison of black hole growth in galaxy mergers with gasoline and ramses Open
Supermassive black hole dynamics during galaxy mergers is crucial in determining the rate of black hole mergers and cosmic black hole growth. As simulations achieve higher resolution, it becomes important to assess whether the black hole d…