Results 81 to 90 of about 102,046 (339)

Counting Black Holes: The Cosmic Stellar Remnant Population and Implications for LIGO

, 2017
We present an empirical approach for interpreting gravitational wave signals of binary black hole mergers under the assumption that the underlying black hole population is sourced by remnants of stellar evolution.
Bullock, James S., Elbert, Oliver D., Kaplinghat, Manoj   +2 more
core   +1 more source

Growing massive black holes through super-critical accretion of stellar-mass seeds [PDF]

, 2015
The rapid assembly of the massive black holes that power the luminous quasars observed at $z \sim 6-7$ remains a puzzle. Various direct collapse models have been proposed to head-start black hole growth from initial seeds with masses $\sim 10^5\,\rm M_ ...
Dotti, M., Fiacconi, D., Haardt, F., Lupi, A., Madau, P., Mayer, L.   +5 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +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

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Observability of Isolated Stellar-mass Black Holes

The Astrophysical Journal Letters
Stellar-mass black holes (BHs) represent the natural end states of massive stars. It is estimated that 10 ^8 stellar-mass BHs are present in the Milky Way galaxy, a significant fraction of which are expected to be isolated.
Lena Murchikova, Kailash C. Sahu
doaj   +1 more source

An Over-Massive Black Hole in the Compact Lenticular Galaxy NGC1277 [PDF]

, 2012
All massive galaxies likely have supermassive black holes at their centers, and the masses of the black holes are known to correlate with properties of the host galaxy bulge component.
A van der Wel, AC Fabian, AE Reines, Arjen van der Wel, CY Peng, D Merritt, DJ Croton, E Sani, GJ Hill, Glenn van de Ven, J Kormendy, J Magorrian, JE Greene, JF Navarro, Jonelle L. Walsh, K Gültekin, K Jahnke, Karl Gebhardt, Kayhan Gültekin, M Cappellari, M Schwarzschild, MA Pahre, N Häring, N Nowak, NJ McConnell, PG van Dokkum, PG van Dokkum, R Cid Fernandes, RCE van den Bosch, RCE van den Bosch, Remco C. E. van den Bosch, RP van der Marel, RS Somerville, TH Jarrett   +33 more
core   +2 more sources

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Confronting Models of Massive Star Evolution and Explosions with Remnant Mass Measurements

, 2017
The mass distribution of compact objects provides a fossil record that can be studied to uncover information on the late stages of massive star evolution, the supernova explosion mechanism, and the dense matter equation of state.
Raithel, Carolyn A., Sukhbold, Tuguldur, Özel, Feryal   +2 more
core   +1 more source

Kretschmann Scalar for a Kerr-Newman Black Hole [PDF]

, 1999
I have derived the Kretschmann scalar for a general black hole of mass m, angular momentum per unit mass a, and electric charge Q. The Kretschmann scalar gives the amount of curvature of spacetime, as a function of position near (and within) a black hole.
Henry, Richard C.
core   +3 more sources