Measuring spin of a supermassive black hole at the Galactic centre -- Implications for a unique spin
, 2010 We determine the spin of a supermassive black hole in the context of discseismology by comparing newly detected quasi-periodic oscillations (QPOs) of radio emission in the Galactic centre, Sagittarius A* (Sgr A*), as well as infrared and X-ray emissions ...
Abramowicz +44 more
core +1 more source
A Unified, Merger-driven Model of the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes, and Galaxy Spheroids [PDF]
, 2005 We present an evolutionary model for starbursts, quasars, and spheroidal galaxies in which mergers between gas-rich galaxies drive nuclear inflows of gas, producing starbursts and feeding the buried growth of supermassive black holes (BHs) until feedback
P. Hopkins +5 more
semanticscholar +1 more source
Gravitational waves from binary supermassive black holes missing in pulsar observations [PDF]
Science, 2015 Placing bounds on gravitational wave detection Gravitational waves are expected to be generated by the interaction of the massive bodies in black-hole binary systems.
R. Shannon +21 more
semanticscholar +1 more source
Shadow of a rotating squashed Kaluza-Klein black hole
Journal of High Energy Physics, 2019 We study the shadow of a rotating squashed Kaluza-Klein (KK) black hole and the shadow is found to possess distinct properties from those of usual rotating black holes.
Fen Long +3 more
doaj +1 more source
Interaction of Supermassive Black Holes with their Stellar and Dark Matter Environments
, 2004 A review of recent theoretical work on the interactions of supermassive single and binary black holes with their nuclear environments, highlighting ways in which the observed structure of nuclei can be used to constrain the formation history of black ...
Merritt, David
core +3 more sources
Observational evidence for a connection between SMBHs and dark matter haloes [PDF]
, 2004 We investigate the relation between circular velocity vc and bulge velocity dispersion sigma in spiral galaxies, based on literature data and new spectroscopic observations. We find a strong, nearly linear vc-sigma correlation with a negligible intrinsic
Baes, Maarten +4 more
core +2 more sources
Super-Eddington Accretion Disks around Supermassive Black Holes [PDF]
Astrophysical Journal, 2017 We use global three-dimensional radiation magnetohydrodynamical simulations to study accretion disks onto a black hole with accretion rates varying from to . We initialize the disks with a weakly magnetized torus centered at either 50 or 80 gravitational
Yan-Fei 飞 Jiang 姜 燕 +2 more
semanticscholar +1 more source
Probing the formation of the seeds of supermassive black holes with gravitational waves
, 2018 The existence of black holes in the intermediate mass interval between one hundred and ten thousand solar masses, filling the gap between the stellar and the supermassive black holes is a key prediction to explain the origin of luminous QSOs at redshifts
Colpi, Monica
core +1 more source
Electromagnetic Emission from Supermassive Binary Black Holes Approaching Merger [PDF]
Astrophysical Journal, 2018 We present the first relativistic prediction of the electromagnetic emission from the surrounding gas of a supermassive binary black hole system approaching merger.
Stéphane d'Ascoli +5 more
semanticscholar +1 more source
Rotating scalarized supermassive black holes
European Physical Journal C: Particles and FieldsIn this study, we investigate rotating black hole solutions within a scalar-Gauss–Bonnet gravity framework that incorporates a squared Gauss–Bonnet term. By employing a quadratic–exponential coupling function between the scalar field and the Gauss–Bonnet
Shoupan Liu +3 more
doaj +1 more source