Results 71 to 80 of about 123,706 (259)

Star Formation in Isolated Disk Galaxies. I. Models and Characteristics of Nonlinear Gravitational Collapse

, 2005
We model gravitational collapse leading to star formation in a wide range of isolated disk galaxies using a three-dimensional, smoothed particle hydrodynamics code.
Bate M. R., Bate M. R., Elmegreen B. G., Friedli D., Fukui Y., Goldreich P., Klessen R. S., Mordecai‐Mark Mac Low, Navarro J. F., Ralf S. Klessen, Reed D., Safronov V. S., Steinmetz M., Steinmetz M., Yuexing Li   +14 more
core   +2 more sources

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

Complexity driven by anisotropy, inhomogeneity and dissipation

European Physical Journal C: Particles and Fields
This work presents a detailed analysis of the gravitational collapse of a shear-free radiating, spherically symmetric imperfect fluid. The interior spacetime, characterized by dissipative and anisotropic pressure processes, is matched to an exterior ...
Lindani C. Majozi, Megandhren Govender, Sunil D. Maharaj, Wesley Govender   +3 more
doaj   +1 more source

Magnetic tension and gravitational collapse

, 2006
The gravitational collapse of a magnetised medium is investigated by studying qualitatively the convergence of a timelike family of non-geodesic worldlines in the presence of a magnetic field. Focusing on the field's tension we illustrate how the winding
Christos G Tsagas, Dadhich N, de Felice F, Ellis G F R, Ellis G F R, Friedlander F G, Hawking S W, Krasiński A Bolejko K, Mestel L, Nakamura T, Newman R P A C, Novikov I D, Ori A, Parker E N, Poisson E, Rayan M P, Thorne K S, Tsagas C G, Tsagas C G, Tsagas C G, Wald R M   +20 more
core   +1 more source

Critical phenomena in gravitational collapse [PDF]

Banach Center Publications, 1997
AbstractAs first discovered by Choptuik, the black hole threshold in the space of initial data for general relativity shows both surprising structure and surprising simplicity. Universality, power-law scaling of the black hole mass, and scale echoing have given rise to the term “critical phenomena”.
openaire   +10 more sources

Universal Entanglement and an Information‐Complete Quantum Theory

Advanced Physics Research, EarlyView.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

Gravitational Collapse and Singularity Removal in Rastall Theory

Advances in High Energy Physics, 2021
In the present work, we study spherically symmetric gravitational collapse of a homogeneous fluid in the framework of Rastall gravity. Considering a nonlinear equation of state (EoS) for the fluid profiles, we search for a class of nonsingular collapse ...
Ehsan Dorrani
doaj   +1 more source

Gravitational Collapse in One Dimension

, 2012
We simulate the evolution of one-dimensional gravitating collisionless systems from non- equilibrium initial conditions, similar to the conditions that lead to the formation of dark- matter halos in three dimensions.
A. E. Schulz, Ackermann, G. Jungman, S. Tremaine, W. Dehnen   +4 more
core   +1 more source

The spread of non‐native species

Biological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock, Ali Serhan Tarkan, Irene Martín‐Forés, Stelios Katsanevakis, Ronaldo Sousa, Ismael Soto, Andy J. Green, Antonín Kouba, Teun Everts, Victoria Dominguez Almela, Nadège Belouard, Cang Hui, Jamie Bojko, Victor Deklerck, Margaux Boeraeve, Franz Essl, J. Robert Britton   +16 more
wiley   +1 more source

Recent Strategies Toward Durable and Ion‐Tolerant Transition Metal‐Based Electrocatalysts in Seawater Electrolysis

Carbon Energy, EarlyView.
Recent strategies address these challenges through ion‐specific regulation, encompassing chloride‐tolerant and chloride‐regulating anodes together with cathode designs that suppress OH− accumulation and Mg2+/Ca2+ coupling. This ion‐management‐oriented framework provides general guidelines for achieving stable, selective, and scalable seawater ...
Lina Li, Wenda Zhang, Xinti Yu, Ning Han, Zhangxing Chen, Heng Zhao   +5 more
wiley   +1 more source