Results 21 to 30 of about 21,739 (292)
Accretion Into and Emission from Black Holes [PDF]
, 1976 Analyses are given of various processes involving matter falling into or coming out of black holes. A significant amount of matter may fall into a black hole in a galactic nucleus or in a binary system.
Page, Don Nelson
core +1 more source
An intermediate‐mass black hole candidate in M51? [PDF]
Astronomische Nachrichten, 2016 AbstractWe present the current results of an investigation into M51 ULX‐7, using archival data from XMM‐Newton, Chandra and NuSTAR, and optical and radio data from HST and VLA. The source has a consistently hard power‐law X‐ray spectrum and high short‐term variability.
openaire +3 more sources
ON THE SEARCH OF THE "ELUSIVE" INTERMEDIATE MASS BLACK-HOLES
Revista Mexicana de Astronomía y Astrofísica Serie de Conferencias, 2019 10 pages, 7 figures. Submitted to RMxAC for the conference Astrorob 2017 ( http://astrorob.iaa.es ). Caption of Fig.
Caballero-García, María Dolores +6 more
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Demographics of Hierarchical Black Hole Mergers in Dense Star Clusters
The Astrophysical Journal, 2023 With about one hundred mergers of binary black holes (BBHs) detected via gravitational waves by the LIGO-Virgo-KAGRA (LVK) Collaboration, our understanding of the darkest objects in the universe has taken unparalleled steps forward.
Giacomo Fragione, Frederic A. Rasio
doaj +1 more source
Constraints on relic magnetic black holes
Journal of High Energy Physics, 2022 We present current direct and astrophysical limits on the cosmological abundance of black holes with extremal magnetic charge. Such black holes do not Hawking radiate, allowing those normally too light to survive to the present to do so.
Melissa D. Diamond, David E. Kaplan
doaj +1 more source
Synchronizing the EMRIs and IMRIs in AGN Accretion Disks
The Astrophysical Journal, 2023 Extreme-mass-ratio inspirals (EMRIs) and intermediate-mass-ratio inspirals (IMRIs) are important gravitational-wave (GW) sources for the Laser Interferometer Space Antenna (LISA).
Peng Peng, Xian Chen
doaj +1 more source
Intermediate-mass black holes as LISA sources [PDF]
Classical and Quantum Gravity, 2009 Accepted by CQG, LISA 7 Special ...
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Uniqueness of near-horizon geometries of rotating extremal AdS(4) black holes [PDF]
, 2009 We consider stationary extremal black hole solutions of the Einstein-Maxwell equations with a negative cosmological constant in four dimensions. We determine all non-static axisymmetric near-horizon geometries and all static near-horizon geometries for ...
Lucietti, James, Kunduri, Hari K.
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Hypervelocity Stars from a Supermassive Black Hole–Intermediate-mass Black Hole Binary [PDF]
The Astrophysical Journal, 2019 Abstract In this paper we consider a scenario in which the currently observed hypervelocity stars in our Galaxy have been ejected from the Galactic center as a result of dynamical interactions with an intermediate-mass black hole (IMBH) orbiting the central supermassive black hole (SMBH).
Alexander Rasskazov +6 more
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THE CLOSE STELLAR COMPANIONS TO INTERMEDIATE-MASS BLACK HOLES [PDF]
The Astrophysical Journal, 2016 ABSTRACT When embedded in dense cluster cores, intermediate-mass black holes (IMBHs) acquire close stellar or stellar-remnant companions. These companions are not only gravitationally bound, but also tend to hierarchically isolate from other cluster stars through series of multibody encounters.
Morgan MacLeod +2 more
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