Results 81 to 90 of about 5,978,686 (296)

Star cluster black hole, 2013

open access: yes, 2013
Image of star cluster black hole. Scientists had believed that supermassive black holes, located at the centres of galaxies, increased their mass in step with the growth of their host galaxy.
Alister W. Graham, Gabriel Perez Diaz
core   +1 more source

Exploring the Evolution of a Dwarf Spheroidal Galaxy with SPH Simulations. II. AGN Feedback

open access: yesThe Astrophysical Journal
We investigate active galactic nucleus (AGN) feedback from an intermediate-mass black hole at the center of a dwarf spheroidal galaxy, by performing isolated galaxy simulations using a modified version of the GADGET-3 code. We consider Leo II (PGC 34176)
Roberto Hazenfratz   +3 more
doaj   +1 more source

Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots

open access: yesAdvanced Functional Materials, EarlyView.
Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz   +11 more
wiley   +1 more source

Toward Black Hole Stars: Supermassive Black Hole Growth in Nuclear Clusters via Stellar-object and Gas Accretion

open access: yesThe Astrophysical Journal Letters
Supermassive black hole (SMBH) growth plausibly occurs via runaway astrophysical black hole mergers in nuclear star clusters that form intermediate mass black hole seeds at high redshifts.
Konstantinos Kritos, Joseph Silk
doaj   +1 more source

Which Globular Clusters Contain Intermediate‐Mass Black Holes? [PDF]

open access: yesThe Astrophysical Journal, 2005
13 pages, 3 figures, Accepted ofr publication in ApJ (scheduled for February 2005)
Baumgardt, Holger   +2 more
openaire   +4 more sources

Anisotropic Phonon Dynamics and Directional Transport in Actinide Van der Waals Semiconductor Uranium Triselenide

open access: yesAdvanced Functional Materials, EarlyView.
USe3 is introduced as an actinide van der Waals semiconductor that mirrors the quasi‐one‐dimensional physics of transition‐metal trichalcogenides. Polarization‐resolved Raman spectroscopy on exfoliated flakes maps strong in‐plane phonon anisotropy and strain‐tunable mode shifts.
Aljoscha Söll   +17 more
wiley   +1 more source

Black hole attractors and the entropy function in four- and five-dimensional N=2 supergravity [PDF]

open access: yes, 2007
Extremal black holes in theories of gravity coupled to abelian gauge fields and neutral scalars, such as those arising in the low-energy description of compactifications of string theory on Calabi-Yau manifolds, exhibit the attractor phenomenon: on the ...
Perz, Jan
core   +1 more source

Tidal Disruptions of Close White Dwarf Binaries by Intermediate-mass Black Holes

open access: yesThe Astrophysical Journal
We perform a suite of numerical simulations of tidal disruption events, using smoothed particle hydrodynamics, for a close binary system consisting of two low-mass white dwarfs and an intermediate-mass nonspinning black hole.
Aryabrat Mahapatra   +3 more
doaj   +1 more source

Investigating the mass of the intermediate mass black hole candidate HLX-1 with the slimbh model [PDF]

open access: yes, 2014
International audienceIn this paper we present a comprehensive study of the mass of the intermediate mass black hole candidate HLX-1 in the galaxy ESO 243-49.
Barret, Didier   +9 more
core   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

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