Population statistics of intermediate-mass black holes in dwarf galaxies using the newhorizon simulation [PDF]
Monthly notices of the Royal Astronomical Society, 2022 While it is well established that supermassive black holes (SMBHs) co-evolve with their host galaxy, it is currently less clear how lower-mass black holes, so-called intermediate-mass black holes (IMBHs), evolve within their dwarf galaxy hosts. In this
R. Beckmann +8 more
semanticscholar +1 more source
A Sample of Massive Black Holes in Dwarf Galaxies Detected via [Fe x] Coronal Line Emission: Active Galactic Nuclei and/or Tidal Disruption Events [PDF]
Astrophysical Journal, 2021 The massive black hole (BH) population in dwarf galaxies (M BH ≲ 105 M ⊙) can provide strong constraints on the origin of BH seeds. However, traditional optical searches for active galactic nuclei (AGNs) only reliably detect high-accretion, relatively ...
M. Molina +4 more
semanticscholar +1 more source
Constraints on primordial black holes from observation of stars in dwarf galaxies [PDF]
, 2022 We propose a way to constrain the primordial black hole (PBH) abundance in the range of PBH masses $m$ around $10^{20}$g based on their capture by Sun-like stars in dwarf galaxies, with subsequent star destruction.
Nicolas Esser, P. Tinyakov
semanticscholar +1 more source
Variability-selected Intermediate-mass Black Hole Candidates in Dwarf Galaxies from ZTF and WISE [PDF]
Astrophysical Journal, 2021 While it is difficult to observe the first black hole seeds in the early universe, we can study intermediate-mass black holes (IMBHs) in local dwarf galaxies for clues about their origins.
C. Ward +11 more
semanticscholar +1 more source
Transients from ONe White Dwarf – Neutron Star/Black Hole Mergers [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We conduct the first 3D hydrodynamic simulations of oxygen-neon white dwarf-neutron star/black hole mergers (ONe WD-NS/BH mergers). Such mergers constitute a significant fraction, and may even dominate, the inspiral rates of all WD-NS binaries. We post-
A. Bobrick +4 more
semanticscholar +1 more source
Modelling quantum aspects of disruption of a white dwarf star by a black hole
Scientific Reports, 2021 We study the final stages of the evolution of a binary system consisted of a black hole and a white dwarf star. We implement the quantum hydrodynamic equations and carry out numerical simulations.
Tomasz Karpiuk +3 more
doaj +1 more source
Relics of Supermassive Black Hole Seeds: The Discovery of an Accreting Black Hole in an Optically Normal, Low Metallicity Dwarf Galaxy [PDF]
Astrophysical Journal Letters, 2021 The detection and characterization of supermassive black holes (SMBHs) in local low mass galaxies is crucial to our understanding of the origins of SMBHs.
J. Cann +13 more
semanticscholar +1 more source
Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers
The Astrophysical Journal, 2023 Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić +3 more
doaj +1 more source
The Astrophysical Journal, 2023 We study the morphologies and structures of 57 dwarf galaxies that are representative of the general population of dwarf galaxies and compare their demographics to a sample of dwarf galaxies hosting optically selected active galactic nuclei (AGNs).
Seth J. Kimbrell +3 more
doaj +1 more source
Dynamical Analysis of the Dark Matter and Central Black Hole Mass in the Dwarf Spheroidal Leo I [PDF]
Astrophysical Journal, 2021 We measure the central kinematics for the dwarf spheroidal galaxy Leo I using integrated-light measurements and previously published data. We find a steady rise in the velocity dispersion from 300″ into the center. The integrated-light kinematics provide
Maria Jose Bustamante-Rosell +6 more
semanticscholar +1 more source