Results 121 to 130 of about 34,507 (229)

Tidal disruption of stars by supermassive black holes: The X-ray view

open access: yesEPJ Web of Conferences, 2012
The tidal disruption of stars by supermassive black holes produces luminous soft X-ray accretion flares in otherwise inactive galaxies. First events have been discovered in X-rays with the ROSAT observatory, and have more recently been detected with XMM ...
Komossa S.
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

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

Star Clusters and Super Massive Black Holes: High Velocity Stars Production

open access: yes, 2016
One possible origin of high velocity stars in the Galaxy is that they are the product of the interaction of binary systems and supermassive black holes.
Capuzzo-Dolcetta, Roberto   +1 more
core  

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