Results 81 to 90 of about 163,915 (293)

On the Tidal Capture of White Dwarfs by Intermediate-mass Black Holes in Dense Stellar Environments

The Astrophysical Journal, 2023
Intermediate-mass black holes (IMBHs) are the missing link between stellar-mass and supermassive black holes, widely believed to reside in at least some dense star clusters, but not yet observed directly.
Claire S. Ye, Giacomo Fragione, Rosalba Perna   +2 more
doaj   +1 more source

Thermodynamics of third order Lovelock anti-de Sitter black holes revisited

, 2010
We compute the mass and the temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient ...
D. Birmingham, De-Cheng Zou, E. Witten, E. Witten, Rui-Hong Yue, S.O. Alekseev, T. Clunan, Zhan-Ying Yang   +7 more
core   +1 more source

Single‐ and Dual‐Atom Configurations in Atomically Dispersed Catalysts for Lithium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
Single‐atom and dual‐atom‐based atomically dispersed catalysts (ADCs) effectively address the shuttle effect and sluggish redox kinetics in Li–S batteries. With nearly 100% atomic utilization and tunable coordination environments, ADCs enhance LiPSs adsorption, lower conversion barriers, and accelerate sulfur redox reactions.
Haoyang Xu, Zhenfeng Li, Yue Fei, Ali Mohammadi, Ge Li   +4 more
wiley   +1 more source

Active Galactic Nuclei with Candidate Intermediate-Mass Black Holes

, 2004
We present an initial sample of 19 intermediate-mass black hole candidates in active galactic nuclei culled from the First Data Release of the Sloan Digital Sky Survey.
Boller T., de Vaucouleurs G., Jenny E. Greene, Kohler T., Krolik J. H., Luis C. Ho, Pelat D., Pounds K. A., Soltan A., Whittle M.   +9 more
core   +1 more source

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

Probing Supermassive Black Hole Seed Scenarios with Gravitational-wave Measurements

The Astrophysical Journal
The process whereby the supermassive black holes (SMBHs) populating the centers of galaxies have been assembled remains to be established, with the relative importance of seeds provided by collapsed Population III stars, black holes formed in nuclear ...
John Ellis, Malcolm Fairbairn, Juan Urrutia, Ville Vaskonen   +3 more
doaj   +1 more source

Evolution of Intermediate-Mass Black Hole X-Ray Binaries

, 2004
The majority of the ultraluminous X-ray sources (ULXs) in external galaxies are believed to be accreting black holes in binary systems; some of the black holes could be as massive as $\sim 100-1000 \ms$.
Eggleton P. P., Matsumoto H., Xiang-Dong Li   +2 more
core   +2 more sources

Ultrasmall Platinum Nanoparticles for Radiation‐Enhanced Cancer Therapy

Advanced Functional Materials, EarlyView.
This work proposes a nanomedicine‐based strategy to enhance X‐ray radiotherapy for cancer treatment. Ultrasmall Pt‐NPs exhibit catalase‐like activity that may contribute to modulation of the tumor microenvironment and amplify interactions between radiation and biological matter, leading to increased DNA damage.
Miguel Encinas‐Gimenez, Jose I. Garcia‐Peiro, Jose L. Hueso, Eduardo Caleiras, Laura Notario, Felipe Hornos, Pilar Martin‐Duque, Antonio De la Vieja, Jesus Santamaria   +8 more
wiley   +1 more source

Constraining the Low-mass End of the Black Hole Mass Function and the Active Fraction of the Intermediate-mass Black Holes

The Astrophysical Journal
We investigate the black hole mass function (BHMF) and the Eddington ratio distribution function (ERDF), focusing on the intermediate-mass black holes (IMBHs) with masses down to M _• ∼ 10 ^4 M _⊙ .
Hojin Cho, Jong-Hak Woo
doaj   +1 more source

Phenomenological Analogies in Black Hole Systems of all Masses

, 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