Results 61 to 70 of about 34,013 (306)

Strong field limit of black hole gravitational lensing [PDF]

, 2001
We give the formulation of the gravitational lensing theory in the strong field limit for a Schwarzschild black hole as a counterpart to the weak field approach.
C. M. Will, D. Richstone, G. Iovane, G. Scarpetta, H. Falcke, J. M. Bardeen, K. S. Virbhadra, P. Schneider, S. Capozziello, S. Frittelli, S. U. Viergutz, S. Weinberg, V. Bozza   +12 more
core   +2 more sources

Primordial black holes and their gravitational-wave signatures. [PDF]

Living Rev Relativ
Bagui E, Clesse S, De Luca V, Ezquiaga JM, Franciolini G, García-Bellido J, Joana C, Kumar Jain R, Kuroyanagi S, Musco I, Papanikolaou T, Raccanelli A, Renaux-Petel S, Riotto A, Ruiz Morales E, Scalisi M, Sergijenko O, Ünal C, Vennin V, Wands D, LISA Cosmology Working Group.   +20 more
europepmc   +2 more sources

Semi‐autonomous Navigation of Magnetic Microcarriers for Knee Cartilage Regeneration

Advanced Intelligent Systems, EarlyView.
Autonomous navigation of magnetic microcarriers in complex 3D environments is investigated through a semi‐autonomous strategy integrating magnetic actuation with monocular visual feedback. Real‐time global tracking is achieved via radio‐frequency‐based localization and depth estimation, while model‐based computation determines optimal steering forces ...
Kim Tien Nguyen, Cuong Manh Hoang, Jong‐Oh Park, Jayoung Kim   +3 more
wiley   +1 more source

Star Formation under a Cosmic Microscope: Highly Magnified z = 11 Galaxy behind the Bullet Cluster

The Astrophysical Journal Letters
We present measurements of stellar population properties of a newly discovered, spectroscopically confirmed, $z=11.1{0}_{-0.26}^{+0.11}$ , gravitationally lensed galaxy, using JWST NIRSpec PRISM spectroscopy and NIRCam imaging.
Maruša Bradač, Jon Judež, Chris Willott, Gregor Rihtaršic, Nicholas S. Martis, Anishya Harshan, Giordano Felicioni, Yoshihisa Asada, Guillaume Desprez, Douglas Clowe, Anthony H. Gonzalez, Christine Jones, Brian C. Lemaux, Maxim Markevitch, Vladan Markov, Lamiya Mowla, Gaël Noirot, Annika H. G. Peter, Andrew Robertson, Ghassan T. E. Sarrouh, Marcin Sawicki, Tim Schrabback, Roberta Tripodi   +22 more
doaj   +1 more source

Gravitational lensing effects of black hole with conformally coupled scalar hair

European Physical Journal C: Particles and Fields, 2023
In this paper, we investigate the gravitational lensing effects in the weak and strong field limits of a static black hole with conformally coupled scalar field.
Qi Qi, Yuan Meng, Xi-Jing Wang, Xiao-Mei Kuang   +3 more
doaj   +1 more source

Finding diamonds in the rough: Targeted Sub-threshold Search for Strongly-lensed Gravitational-wave Events

, 2021
Strong gravitational lensing of gravitational waves can produce duplicate signals separated in time with different amplitudes. We consider the case in which strong lensing produces identifiable gravitational-wave events and weaker sub-threshold signals ...
Chan, C. L., Li, Alvin K. Y., Li, Tjonnie G. F., Lin, E. T., Lo, Rico K. L., Sachdev, Surabhi, Weinstein, Alan J.   +6 more
core  

Strong gravitational lensing by Schwarzschild black holes

Astrophysics, 2008
13 pages, 3 ...
Bisnovatyi-Kogan, G. S., Tsupko, O. Yu.
openaire   +3 more sources

Poor Groups Around Strong Gravitational Lenses [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractPoor groups are common and interactive environments for galaxies, and thus are important laboratories for studying galaxy evolution. Unfortunately, little is known about groups at z ≥ 0.1, because of the difficulty in identifying them in the first place. Here we present results from our ongoing survey of the environments of strong gravitational
Ivelina Momcheva, Kurtis Williams, Ann Zabludoff, Charles Keeton   +3 more
openaire   +1 more source

Complexity Analysis of Bubble Plumes in Power Law Fluids Based on Chaos Theory

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In order to reveal the complexity of the internal flow of bubble plume in power law fluid, the flow characteristics and chaotic characteristics of plume are studied by experiment and theory. The chaotic characteristic parameters (correlation dimension D, K entropy, and Lyapunov exponent λ) of gas velocity under different superficial gas ...
Xin Dong, Chong Dong, Can Xue, Meiheng Peng, Ying Feng, Jianwei Zhang, Yinuo Liu   +6 more
wiley   +1 more source

Quasar Milli-lensing and Cold Dark Matter (TNG50) Subhaloes. I. Image Splitting

The Astrophysical Journal
We use numerical mass density profiles from the TNG50 simulation to study the impact of gravitational milli-lensing by dark matter subhaloes on the images of lensed quasars.
E. Mediavilla, J. Jiménez-Vicente, F. M. Heinze, J. Martín Camalich   +3 more
doaj   +1 more source