Results 41 to 50 of about 1,064,480 (240)

Probing satellite haloes with weak gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
We demonstrate the possibility of detecting tidal stripping of dark matter subhalos within galaxy groups using weak gravitational lensing. We have run ray-tracing simulations on galaxy catalogues from the Millennium Simulation to generate mock shape catalogues. The ray-tracing catalogues assume a halo model for galaxies and groups, using various models
Gillis, Bryan R., Hudson, Michael J., Hilbert, Stefan, Hartlap, Jan   +3 more
openaire   +2 more sources

Search for lensing signatures in the gravitational-wave observations from the first half of LIGO–Virgo's third observing run [PDF]

, 2021
We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O3a, the first half of their ...
The LIGO Scientific Collaboration, Angelova, S. V., Reid, S., Abbott, R., Hill, P., Gier, C., Wallace, G. S., The Virgo Collaboration, BenYaala, M.   +8 more
core   +2 more sources

MOF‐Derived Cu‐TiO2/Alginate Micromotors for Buoyancy‐Regulated 3D Motion

Advanced Science, EarlyView.
In this work, cyanobacteria‐inspired sodium alginate (SA)/Cu‐TiO2/Fe3O4 hydrogel micromotors generate and encapsulate O2 microvesicles upon light irradiation, enabling buoyancy‐mediated Z‐axis upward migration and surface enrichment at the light‐exposed water‐air surface.
Wei Zou, Qing Wu, Jiawei Lin, Kunchen Li, Yulong Ying, Josep Puigmartí‐Luis, Salvador Pané, Sheng Wang   +7 more
wiley   +1 more source

Statistical methods in weak gravitational lensing [PDF]

, 2015
This thesis studies several topics in the area of weak gravitational lensing and addresses some key statistical problems within this subject. A large part of the thesis concerns the measurement of galaxy shapes for weak gravitational lensing and the ...
Kacprzak, T
core  

Microlensing timescales and flux magnification probabilities of a sample of 204 lensed quasars

Astronomy & Astrophysics
Context. Quasar microlensing is a very useful tool in cosmology and astrophysics, as well as a source of uncertainty in certain investigations, such as the determination of the Hubble constant from lensed quasars.
Ávila-Vera F., Motta V., Mediavilla E.
doaj   +1 more source

Weak-lensing Mass Bias in Merging Galaxy Clusters

The Astrophysical Journal, 2023
Although weak lensing (WL) is a powerful method to estimate a galaxy cluster mass without any dynamical assumptions, a model bias can arise when the cluster density profile departs from the assumed model profile. In a merging system, the bias is expected
Wonki Lee, Sangjun Cha, M. James Jee, Daisuke Nagai, Lindsay King, John ZuHone, Urmila Chadayammuri, Sharon Felix, Kyle Finner   +8 more
doaj   +1 more source

Amphibious Movement of Microrobots Inspired by Water Spiders

Advanced Science, EarlyView.
Inspired by the water strider, a novel microrobot is designed to maintain amphibious mobility in complex environments. It retains the ability to traverse the air‐liquid interface and perform directional movement within sophisticated, multifaceted environments, including complex gastric wall structures, with precise controllability.
Xiao Hu, Run Ouyang, Zhuhao Shi, Wanqiong Tao, Zuchao Zhu, Peifeng Lin, Jianzhong Lin, Luca Brandt   +7 more
wiley   +1 more source

Cluster Weak Gravitational Lensing

International School of Physics “Enrico Fermi”, 2010
Weak gravitational lensing of background galaxies is a unique, direct probe of the distribution of matter in clusters of galaxies. We review several important aspects of cluster weak gravitational lensing together with recent advances in weak lensing techniques for measuring cluster lensing profiles and constraining cluster structure parameters.
openaire   +2 more sources

Weak deflection gravitational lensing for photons coupled to Weyl tensor in a Schwarzschild black hole

European Physical Journal C: Particles and Fields, 2018
Beyond the Einstein–Maxwell model, electromagnetic field might couple with gravitational field through the Weyl tensor. In order to provide one of the missing puzzles of the whole physical picture, we investigate weak deflection lensing for photons ...
Wei-Guang Cao, Yi Xie
doaj   +1 more source

A Scalable Droplet Microfluidic Platform That Overcomes Large‐Cell Constraints for Long‐Term Plant Cell Culture and Embryogenesis Analysis

Advanced Science, EarlyView.
This work presents a large‐cell‐compatible droplet microfluidic platform that overcomes long‐standing barriers in plant cell culture by enabling high‐fidelity encapsulation, novel multilayer 3D droplet incubation for scalable long‐term culture, and support for the full developmental progression of large plant cells.
Arman Mirmiran, Fangchi Shao, Gregory Datto, Tathansh Joshi, Elizabeth Chatt, Yashar Bashirzadeh, Dan Stessman, Lai Wei, Kuangwen Hsieh, Hena Guo, Tza‐Huei Wang   +10 more
wiley   +1 more source