Results 121 to 130 of about 2,804,318 (294)

Trends in the Population of Binary Black Holes Following the Fourth Gravitational-wave Transient Catalog: A Data-driven Analysis

The Astrophysical Journal
Current models of binary black hole distributions are difficult to interpret because inferences hinge on modeling choices, which can mask or mimic real structure.
Nir Guttman, Ethan Payne, Paul D. Lasky, Eric Thrane   +3 more
doaj   +1 more source

Evidence for supermassive black hole binaries

Publications of the Astronomical Society of Australia
Abstract We review the state of the evidence for the existence and observational appearance of supermassive black hole binaries. Such objects are expected from standard hierarchical galaxy evolution to form after two galaxies, each containing a supermassive black hole, have merged, in the centre of the merger remnant.
Martin Gustav Heinrich Krause, Martin Albert Bourne, Silke Britzen, Adi Foord, Jenny Greene, Melanie Habouzit, Maya Horton, Lucio Mayer, Hannah Middleton, Rebecca Nealon, Julia Sisk-Reynés, Christopher Reynolds, Debora Sijacki   +12 more
openaire   +3 more sources

3D Printed Meter‐Scale Soft Origami Robots Capable of Load‐Bearing Actuation Via Crease Stiffness Modulation

Advanced Science, EarlyView.
Origami has inspired numerous soft deployable mechanisms for safe human‐robot interaction, while its intrinsic kinematic instability at arbitrary configurations limited their practical robotic application. This work presents a 3D printed meter‐scale origami robotic actuator capable of load‐bearing deformation through creaseline stiffness modulation.
Sung Yol Yu, Sang‐Joon Ahn, Wonchul Lee, Seunguk Moon, Hyun‐Jin Hong, Kyu‐Jin Cho   +5 more
wiley   +1 more source

Transmuted gravity wave signals from primordial black holes

Physics Letters B, 2018
Primordial black holes (PBHs) interacting with stars in binaries lead to a new class of gravity wave signatures that we explore. A small 10−16–10−7M⊙ PBH captured by a neutron star or a white dwarf will eventually consume the host.
Volodymyr Takhistov
doaj   +1 more source

Unveiling the Uncharted Potential of 2D Materials in Li/Na–S Batteries: A Paradigm Shift From Graphene

Advanced Science, EarlyView.
This review explores emerging 2D materials beyond graphene, including graphdiyne, phosphorene, borophene, siloxene, MBene, antimonene, and germanene for Li/Na–S batteries. It analyzes their roles as sulfur hosts, metallic anode protectors, separators, and electrolyte fillers, emphasizing polysulfide suppression, dendrite inhibition, and interfacial ...
Naveen Kumar T. R, Xuebing Zhu, Yao‐Jie Lei, Lei Zhang, Hua Kun Liu, Weihong Lai, Guoxiu Wang, Yun‐Xiao Wang   +7 more
wiley   +1 more source

Analyzing Binary Black hole Spacetimes [PDF]

, 2019
With the first ever detection of gravitational waves from merging black-hole binaries by LIGO (Laser Interferometer GravitationalWave Observatory), a new era of gravitational wave astronomy was started.
Sadiq, Jam
core   +1 more source

On the Evolution of Disk-embedded Binaries: Framing Local Models in Global Context

The Astrophysical Journal
The disks of active galactic nuclei (AGNs) have in recent years been recognized as possible sites for gravitational-wave sources, leading to a series of numerical studies on the evolution of disk-embedded black hole binaries.
Philip Kirkeberg, Rixin Li, Martin E. Pessah   +2 more
doaj   +1 more source

Dimensional Engineering of Carbon‐Based Hybrids: From 1D Conductive Networks to 3D Porous Architectures for Next‐Generation Microwave Absorption

Advanced Science, EarlyView.
This review explores dimensional architecture engineering to overcome the impedance‐attenuation trade‐off in electromagnetic wave absorbing materials. By analyzing 1D to 3D structures and their multidimensional hybrids, we highlight synergistic mechanisms for enhanced performance.
Chuanyu Liu, Xiaoxin Guo, Xunlong Zhang, Ruiling Sun, Xingyu Zhang, Can Ge, Xuhong Yang, Yuqing Liu   +7 more
wiley   +1 more source

SDSS J153231.80+420342.7: A triple black hole candidate with a close binary black hole

Astronomy & Astrophysics
We reported a triple black hole candidate with a close binary black hole (BBH) in the blue quasar SDSS J153231.80+420342.7 (=SDSS J1532) at a redshift of 0.209.
Zheng Qi, Jiang YiWen, Zhang Xue-Guang, Yuan Qirong   +3 more
doaj   +1 more source

Advances in Se Wide‐Bandgap Photovoltaics and TexSe1‐x SWIR Photodiodes

Advanced Science, EarlyView.
In this review, fundamental properties and current challenges in Se photovoltaics (PVs) for tandem and indoor PVs and TexSe1‐x alloys for short wave infrared photodiodes are discussed. A case is made for the practicality of elemental chalcogenide optoelectronics, and a pathway toward resolving the key challenges in these respective technologies is ...
Adam D. Alfieri, Deep Jariwala
wiley   +1 more source