Results 31 to 40 of about 8,250 (145)

Do Neutron Star Ultraluminous X-Ray Sources Masquerade as Intermediate-mass Black Holes in Radio and X-Ray?

The Astrophysical Journal
Ultraluminous X-ray sources (ULXs) were once largely believed to be powered by super-Eddington accretion onto stellar-mass black holes, although in some rare cases, ULXs also serve as potential candidates for (sub-Eddington) intermediate-mass black holes.
Teresa Panurach, Kristen C. Dage, Ryan Urquhart, Richard M. Plotkin, Jeremiah D. Paul, Arash Bahramian, McKinley C. Brumback, Timothy J. Galvin, Isabella Molina, James C. A. Miller-Jones, Payaswini Saikia   +10 more
doaj   +1 more source

Discovery of a Planar Black Hole Mass Scaling Relation for Spiral Galaxies

The Astrophysical Journal Letters, 2023
Supermassive black holes (SMBHs) are tiny in comparison to the galaxies they inhabit, yet they manage to influence and coevolve along with their hosts.
Benjamin L. Davis, Zehao Jin
doaj   +1 more source

The Fate of EMRI-IMRI Pairs in Active Galactic Nucleus Accretion Disks: Hydrodynamical and Three-body Simulations

The Astrophysical Journal
Extreme-mass-ratio inspirals (EMRIs) and intermediate-mass-ratio inspirals (IMRIs) are important gravitational wave (GW) sources for the Laser Interferometer Space Antenna.
Peng Peng, Alessia Franchini, Matteo Bonetti, Alberto Sesana, Xian Chen   +4 more
doaj   +1 more source

A New Timescale–Mass Scaling for the Optical Variation of Active Galactic Nuclei across the Intermediate-mass to Supermassive Scales

The Astrophysical Journal
The variability of active galactic nuclei (AGNs) has long been servicing as an essential avenue of exploring the accretion physics of a black hole (BH). There are two commonly used methods for analyzing AGN variability.
Zhen-Bo Su, Zhen-Yi Cai, Mouyuan Sun, Hengxiao Guo, Wei-Min Gu, Jun-Xian Wang   +5 more
doaj   +1 more source

Where are the Intermediate Mass Black Holes? [PDF]

, 2022
Jillian Bellovary, Alyson Brooks, Monica Colpi, Michael Eracleous, Kelly Holley‐Bockelmann, A. E. Hornschemeier, Lucio Mayer, Priya Natarajan, Jacob Slutsky, Michael Tremmel   +9 more
openalex   +1 more source

HOLESOM: Constraining the Properties of Slowly Accreting Massive Black Holes with Self-organizing Maps

The Astrophysical Journal
Accreting massive black holes (MBHs, with M _• > 10 ^3 M _⊙ ) are known for their panchromatic emission, spanning from radio to gamma rays. While MBHs accreting at significant fractions of their Eddington rate are readily detectable, those accreting at ...
Valentina La Torre, Fabio Pacucci
doaj   +1 more source

From Young Massive Clusters to Old Globular Clusters: Density Profile Evolution and Intermediate-mass Black Hole Formation

The Astrophysical Journal
The surface brightness profiles of globular clusters are conventionally described with the well-known King profile. However, observations of young massive clusters (YMCs) in the local Universe suggest that they are better fit by simple models with flat ...
Kuldeep Sharma, Carl L. Rodriguez
doaj   +1 more source

Interpretable machine learning for finding intermediate-mass black holes [PDF]

, 2023
Mario Pasquato, Piero Trevisan, Abbas Askar, Pablo Lemos, Gaia Carenini, Michela Mapelli, Yashar Hezaveh   +6 more
openalex   +1 more source

Counting the Unseen. II. Tidal Disruption Event Rates in Nearby Galaxies with REPTiDE

The Astrophysical Journal
Tidal disruption events (TDEs) are a class of transients that occur when a star is destroyed by the tides of a massive black hole (MBH). Their rates encode valuable MBH demographic information, but this can only be extracted if accurate TDE rate ...
Christian H. Hannah, Nicholas C. Stone, Anil C. Seth, Sjoert van Velzen   +3 more
doaj   +1 more source

Rates of Stellar Tidal Disruption Events around Intermediate-mass Black Holes

The Astrophysical Journal Letters
Rates of stellar tidal disruption events (TDEs) around supermassive black holes (SMBHs) have been extensively calculated using the loss cone theory, while theoretical work on TDE rates around intermediate-mass black holes (IMBHs) has been lacking.
Janet N. Y. Chang, Lixin Dai, Hugo Pfister, Rudrani Kar Chowdhury, Priyamvada Natarajan   +4 more
doaj   +1 more source