Results 51 to 60 of about 159,631 (288)
Orbital Migration of Interacting Stellar Mass Black Holes in Disks around Supermassive Black Holes. II. Spins and Incoming Objects [PDF]
Astrophysical Journal, 2018 The masses, rates, and spins of merging stellar mass binary black holes (BBHs) detected by aLIGO and Virgo provide challenges to traditional BBH formation and merger scenarios.
Amy Secunda +8 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 Numerous observations have shown that almost all galaxies in our Universe host supermassive black holes (SMBHs), but there is still much debate about their formation and evolutionary processes. Recently, gravitational waves (GWs) have been expected to be
Kazuya Furusawa +3 more
doaj +1 more source
Astronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023 Abstract The non‐linear correlation between the UV and X‐ray emission observed in active galactic nuclei remains a puzzling question that challenges accretion models. While the UV emission originates from the cold disk, the X‐ray emission is emitted by a hot corona whose physical characteristics and geometry are still highly debated.
S. Barnier +3 more
wiley +1 more source
The Coevolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe [PDF]
, 2014 We summarize what large surveys of the contemporary Universe have taught us about the physics and phenomenology of the processes that link the formation and evolution of galaxies with their central supermassive black holes.
T. Heckman, P. Best
semanticscholar +1 more source
Looking for ultralight dark matter near supermassive black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 Measurements of the dynamical environment of supermassive black holes (SMBHs) are becoming abundant and precise. We use such measurements to look for ultralight dark matter (ULDM), which is predicted to form dense cores (“solitons”) in the centre of ...
Nitsan Bar +3 more
semanticscholar +1 more source
No Supermassive Black Hole in M33?
Science, 2001 We observed the nucleus of M33, the third-brightest galaxy in the Local Group, with the Space Telescope Imaging Spectrograph at a resolution at least a factor of 10 higher than previously obtained. Rather than the steep rise expected within the radius of gravitational influence of a supermassive black hole, the random stellar velocities showed a ...
David Merritt +2 more
openaire +4 more sources
Astronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023 Abstract Radiation‐magnetohydrodynamic simulation of the active galactic nuclei predicts the presence of the strong accretion disk wind, which gets unstable far from the central region and turns into gas clumps. These inner wind and outer clumps may be actually observed as the ultrafast outflows (UFOs) and the clumpy absorbers, respectively.
Takuya Midooka +2 more
wiley +1 more source
Supermassive black holes and their feedback effects in the IllustrisTNG simulation [PDF]
Monthly notices of the Royal Astronomical Society, 2017 We study the population of supermassive black holes (SMBHs) and their effects on massive central galaxies in the IllustrisTNG cosmological hydrodynamical simulations of galaxy formation.
R. Weinberger +10 more
semanticscholar +1 more source
Gravitational Larmor precession
European Physical Journal C: Particles and Fields, 2023 Inspired by the reported existence of substantive magnetic fields in the vicinity of the central supermassive black holes in Sagittarius A* and Messier 87*, we consider test particle motion in the spacetime close to a generic spherical black hole in the ...
Chandrachur Chakraborty +1 more
doaj +1 more source
The Role of Primordial Kicks on Black Hole Merger Rates [PDF]
, 2005 Primordial stars are likely to be very massive $\geq30\Msun$, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos in the mass range $10^{6}-10^{10}\Ms$. Such early black holes, at redshifts z$\
Abel, Tom +2 more
core +5 more sources