Results 171 to 180 of about 159,631 (288)

Dynamics Around Supermassive Black Holes: Extreme-mass-ratio Inspirals as Gravitational-wave Sources

open access: yesThe Astrophysical Journal
Supermassive black holes and their surrounding dense stellar environments nourish a variety of astrophysical phenomena. We focus on the distribution of stellar-mass black holes around the supermassive black hole and the consequent formation of extreme ...
Barak Rom   +3 more
doaj   +1 more source

Phenomenological Analogies in Black Hole Systems of all Masses

open access: yes, 2004
I review the progress made on the physics of relativistic jets from black hole systems in the context of the analogy between AGN and microquasars that was proposed one decade ago.
Mirabel, I. F.
core   +2 more sources

New Estimates of the Spin and Accretion Rate of the Black Hole M87*

open access: yesThe Astrophysical Journal Letters
In this Letter, we use the imaging results of M87* from the Event Horizon Telescope (EHT) to calculate the rotational velocity of the inner edge of the accretion disk and find a value of ∼0.14 c .
Michael Drew   +4 more
doaj   +1 more source

Super-Eddington Accretion in Quasars

open access: yesUniverse
This review provides an observational perspective on the fundamental properties of super-Eddington accretion onto supermassive black holes in quasars.
Paola Marziani   +7 more
doaj   +1 more source

Emergence of cHz Quasiperiodic Oscillations from a Low-angular-momentum Flow onto a Supermassive Black Hole

open access: yesThe Astrophysical Journal Letters
Quasiperiodic oscillations (QPOs) are very common in black hole accretion systems that are seen from the modulations in luminosity. Many supermassive black hole sources (e.g., RE J1034+396, 1H 0707-495, MCG-6-30-15, 1ES 1927+654, Sgr A*) have been ...
Indu K. Dihingia, Yosuke Mizuno
doaj   +1 more source

Simulating ULXs and Blazars as GRMHD Accretion Flows Around a Black Hole

open access: yesThe Astrophysical Journal
General relativistic magnetohydrodynamic (GRMHD) simulations have been instrumental in our understanding of high-energy astrophysical phenomena over the past two decades.
Mayank Pathak, Banibrata Mukhopadhyay
doaj   +1 more source

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