Results 11 to 20 of about 135,505 (333)
Dwarf galaxies and the black hole scaling relations [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2020 ABSTRACT The sample of dwarf galaxies with measured central black hole masses M and velocity dispersions σ has recently doubled, and gives a close fit to the extrapolation of the M - σ relation for more massive galaxies. We argue that this is difficult to reconcile with suggestions that the scaling relations between galaxies and their ...
Rebecca Nealon +4 more
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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
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Constraining Primordial Black Holes with Dwarf Galaxy Heating [PDF]
The Astrophysical Journal Letters, 2021 Abstract Black holes formed in the early universe, prior to the formation of stars, can exist as dark matter and also contribute to the black hole merger events observed in gravitational waves. We set a new limit on the abundance of primordial black holes (PBHs) by considering interactions of PBHs with the interstellar medium, which ...
Philip Lu +5 more
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Overmassive Black Holes in Dwarf Galaxies Out to z ∼ 0.9 in the VIPERS Survey
The Astrophysical Journal Letters, 2023 Supermassive black holes (SMBHs) are thought to originate from early universe seed black holes of mass M _BH ∼ 10 ^2 –10 ^5 M _⊙ and grown through cosmic time. Such seeds could be powering the active galactic nuclei (AGN) found in today’s dwarf galaxies.
Mar Mezcua +5 more
doaj +1 more source
Black dwarf supernova in the far future [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT In the far future, long after star formation has ceased, the universe will be populated by sparse degenerate remnants, mostly white dwarfs, though their ultimate fate is an open question. These white dwarfs will cool and freeze solid into black dwarfs while pycnonuclear fusion will slowly process their composition to iron-56 ...
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Hunting for massive black holes in dwarf galaxies [PDF]
Nature Astronomy, 2022 Despite traditional thinking, an appreciable population of massive black holes may be lurking in dwarf galaxies. Prior to the last decade, nearly all massive black holes were found in the nuclei of giant galaxies and the existence of massive black holes in dwarf galaxies was highly controversial.
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The Astrophysical Journal Letters, 2023 Local low-metallicity dwarf galaxies are relics of the early universe and are thought to hold clues into the origins of supermassive black holes. While recent studies are uncovering a growing population of active galactic nuclei (AGNs) in dwarf galaxies,
Michael Reefe +13 more
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Cusp Disruption in Minor Mergers [PDF]
, 2001 We present 0.55 x 10^6 particle simulations of the accretion of high-density dwarf galaxies by low-density giant galaxies, using models that contain both power-law central density cusps and point masses representing supermassive black holes.
David Merritt +4 more
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A supermassive black hole in an ultra-compact dwarf galaxy [PDF]
Nature, 2014 Author's version of paper appearing in 18 September issue of Nature, available at http://dx.doi.org/10.1038/nature13762 ; 9 pages, 9 figures including methods & supplementary information ...
Nadine Neumayer +17 more
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