359 citations · 4.2k across the 145 of their papers we have counts for
12 papers · 1 filter
Reality or Mirage? Observational Test and Implications for the Claimed Extremely Magnified Quasar at
Fabio Pacucci, Abraham Loeb
In the last two decades, approximately 200 quasars have been discovered at , hosting active super-massive black holes with masses . While t…
Unveiling the Gravitational Universe at μ-Hz Frequencies
Alberto Sesana, Natalia Korsakova, Manuel Arca Sedda +31
We propose a space-based interferometer surveying the gravitational wave (GW) sky in the milli-Hz to -Hz frequency range. By the 2040s', the -Hz frequency band, bracketed in…
BAT AGN Spectroscopic Survey -- XIII. The nature of the most luminous obscured AGN in the low-redshift universe
Rudolf E. Bär, Benny Trakhtenbrot, Kyuseok Oh +18
We present a multi wavelength analysis of 28 of the most luminous low-redshift narrow-line, ultra-hard X-ray selected active galactic nuclei (AGN) drawn from the 70 month Swift/BAT…
Spectral Properties Of Populations Behind The Coherence In Spitzer Near-Infrared And Chandra X-Ray Backgrounds
Yanxia Li, Nico Cappelluti, Günther Hasinger +3
We study the coherence of the near-infrared and X-ray background fluctuations and the X-ray spectral properties of the sources producing it. We use data from multiple Spitzer and C…
The Clustering of Undetected High-redshift Black Holes and Their Signatures in Cosmic Backgrounds
Angelo Ricarte, Fabio Pacucci, Nico Cappelluti +1
There exist hitherto unexplained fluctuations in the Cosmic Infrared Background (CIB) on arcminute scales and larger. These have been shown to cross-correlate with the Cosmic X-ray…
Disentangling nature from nurture: tracing the origin of seed black holes
Priyamvada Natarajan, Angelo Ricarte, Vivienne Baldassare +16
The origin and properties of black hole seeds that grow to produce the detected population of supermassive black holes are unconstrained at present. Despite the existence of severa…
Electromagnetic Window into the Dawn of Black Holes
Zoltán Haiman, William N. Brandt, Alexey Vikhlinin +28
Massive 10^6-10^10 Msun black holes (BHs) are ubiquitous in local galactic nuclei. They were common by the time the Universe is several Gyr old, and many of them were in place with…
Detecting the Birth of Supermassive Black Holes Formed from Heavy Seeds
Fabio Pacucci, Vivienne Baldassare, Nico Cappelluti +11
In this white paper we explore the capabilities required to identify and study supermassive black holes formed from heavy seeds ($\mathrm{M_{\bullet}} \sim 10^4 - 10^6 \, \mathrm{M…
ASTRO2020 White Paper: JWST: Probing the Epoch of Reionization with a Wide Field Time-Domain Survey
L. Wang, J. Mould, D. Baade +29
A major scientific goal of JWST is to probe the epoch of re-ionization of the Universe at z above 6, and up to 20 and beyond. At these redshifts, galaxies are just beginning to for…
The First Luminous Quasars and Their Host Galaxies
Xiaohui Fan, Aaron Barth, Eduardo Banados +26
The discovery of luminous quasars at redshifts up to 7.5 demonstrates the existence of several billion M_sun supermassive black holes (SMBHs) less than a billion years after the Bi…
Black hole scaling relations of active and quiescent galaxies: Addressing selection effects and constraining virial factors
Francesco Shankar, Mariangela Bernardi, Kayleigh Richardson +9
Local samples of quiescent galaxies with dynamically measured black hole masses (Mbh) may suffer from an angular resolution-related selection effect, which could bias the observed…
Improved Dynamical Constraints on the Masses of the Central Black Holes in Nearby Low-mass Early-type Galactic Nuclei And the First Black Hole Determination for NGC 205
Dieu D. Nguyen, Anil C. Seth, Nadine Neumayer +17
We improve the dynamical black hole (BH) mass estimates in three nearby low-mass early-type galaxies--NGC 205, NGC 5102, and NGC 5206. We use new \hst/STIS spectroscopy to fit the…