Results 111 to 120 of about 205,282 (201)

Inner radius and energy conditions of dark matter halos surrounding Schwarzschild black holes

Physics Letters B
We study a class of analytic models for a dark matter halo surrounding a Schwarzschild black hole sitting at the center of a galaxy, with a variable inner radius rin at which the density profile of the dark matter halo vanishes.
Zibo Shen, Anzhong Wang, Shaoyu Yin
doaj   +1 more source

Multiwavelength Constraints on the Local Black Hole Occupation Fraction

The Astrophysical Journal
The fraction of dwarf galaxies hosting central, intermediate-mass black holes (IMBHs) at low redshifts is an important observational probe of black hole seeding at high redshift.
Colin J. Burke, Priyamvada Natarajan, Vivienne F. Baldassare, Marla Geha   +3 more
doaj   +1 more source

Counting microstates of out-of-equilibrium black hole fluctuations

Journal of High Energy Physics
We construct and count the microstates of out-of-equilibrium eternal AdS black holes in which a shell carrying an order one fraction of the black hole mass is emitted from the past horizon and re-absorbed at the future horizon.
Vijay Balasubramanian, Ben Craps, Juan Hernandez, Mikhail Khramtsov, Maria Knysh   +4 more
doaj   +1 more source

Binary Black Hole Mergers and Intermediate-mass Black Holes in Dense Star Clusters with Collisional Runaways

The Astronomical Journal
Intermediate-mass black holes (IMBHs) are believed to be the missing link between the supermassive black holes (BHs) found at the centers of massive galaxies and BHs formed through stellar core collapse. One of the proposed mechanisms for their formation
Rujuta A. Purohit, Giacomo Fragione, Frederic A. Rasio, Grayson C. Petter, Ryan C. Hickox   +4 more
doaj   +1 more source

Detecting Wandering Intermediate-Mass Black Holes with AXIS in the Milky Way and Local Massive Galaxies

Universe
This white paper explores the detectability of intermediate-mass black holes (IMBHs) wandering in the Milky Way (MW) and massive local galaxies, with a particular emphasis on the role of AXIS.
Fabio Pacucci, Bryan Seepaul, Yueying Ni, Nico Cappelluti, Adi Foord   +4 more
doaj   +1 more source

No Evidence for Accretion around the Intermediate-mass Black Hole in Omega Centauri

The Astrophysical Journal
For over a decade, both theoretical predictions and observational studies have suggested that ω Centauri ( ω Cen), the most massive Milky Way globular cluster, might harbor an intermediate-mass black hole (IMBH).
Angiraben D. Mahida, Arash Bahramian, James C. A. Miller Jones, Susmita Sett, Kristen Dage, Jay Strader, Timothy J. Galvin, Alessandro Paduano   +7 more
doaj   +1 more source

Identification of Intermediate-mass Black Hole Candidates among a Sample of Sd Galaxies

The Astrophysical Journal
We analyzed images of every northern hemisphere Sd galaxy listed in the Third Reference Catalogue of Bright Galaxies with a relatively face-on inclination ( θ ≤ 30°). Specifically, we measured the spiral arms’ winding angle, ϕ , in 85 galaxies.
Benjamin L. Davis, Alister W. Graham, Roberto Soria, Zehao Jin, Igor D. Karachentsev, Valentina E. Karachentseva, Elena D’Onghia   +6 more
doaj   +1 more source

Intermediate Mass Black Holes: A brief review

, 2018
Intermediate mass black holes (IMBHs) are an (as yet) elusive class of black holes that are expected to lie in the $10^2-10^5\,M_{\odot}$ range, between the firmly established stellar-mass black holes and ${\gtrsim}10^6\,M_{\odot}$ supermassive black holes.
openaire   +2 more sources

The Intermediate-mass Black Hole in Omega Centauri: Constraints on Accretion from JWST

The Astrophysical Journal
We analyze JWST observations of the central region of the globular cluster ω Centauri (NGC 5139), around the position of the candidate intermediate-mass black hole (IMBH) inferred by M. Häberle et al.
Steven Chen, Jeremy Hare, Oleg Kargaltsev, Hui Yang, Denis Cioffi, Maximilian Häberle, Anil Seth   +6 more
doaj   +1 more source

McFACTS I: Testing the LVK AGN Channel with Monte Carlo for AGN Channel Testing and Simulation (McFACTS)

The Astrophysical Journal
Active galactic nuclei (AGNs) are a promising source of the binary black hole mergers observed in gravitational waves with LIGO-Virgo-Kagra (LVK). Constraining the AGN channel allows us to limit AGN parameter space (disk density, size, average lifetime ...
Barry McKernan, K.E. Saavik Ford, Harrison E. Cook, Vera Delfavero, Emily McPike, Kaila Nathaniel, Jake Postiglione, Shawn Ray, Richard O’Shaughnessy   +8 more
doaj   +1 more source