Results 91 to 100 of about 33,060 (268)

Strong gravitational lensing’s ‘external shear’ is not shear

Monthly Notices of the Royal Astronomical Society
ABSTRACT The distribution of mass in galaxy-scale strong gravitational lenses is often modelled as an elliptical power-law plus ‘external shear’, which notionally accounts for neighbouring galaxies and cosmic shear along our line of sight.
Amy Etherington, James W Nightingale, Richard Massey, Sut-Ieng Tam, XiaoYue Cao, Anna Niemiec, Qiuhan He, Andrew Robertson, Ran Li, Aristeidis Amvrosiadis, Shaun Cole, Jose M Diego, Carlos S Frenk, Brenda L Frye, David Harvey, Mathilde Jauzac, Anton M Koekemoer, David J Lagattuta, Samuel Lange, Marceau Limousin, Guillaume Mahler, Ellen Sirks, Charles L Steinhardt   +22 more
openaire   +6 more sources

A Targeted Search for Variable Gravitationally Lensed Quasars

The Astrophysical Journal
We present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys.
William Sheu, Xiaosheng Huang, Aleksandar Cikota, Nao Suzuki, Antonella Palmese, David J. Schlegel, Christopher Storfer   +6 more
doaj   +1 more source

Strong field gravitational lensing in the deformed H\v{o}rava-Lifshitz black hole

, 2009
Adopting the strong field limit approach, we studied the properties of strong field gravitational lensing in the deformed H\v{o}rava-Lifshitz black hole and obtained the angular position and magnification of the relativistic images.
A. F. Zakharov, Jiliang Jing, K. S. Virbhadra, P. Schneider, Songbai Chen   +4 more
core   +1 more source

Plasmakristall‐4 Experiment: 10 Years of Operation in Orbit

Contributions to Plasma Physics, EarlyView.
ABSTRACT Plasmakristall‐4 (PK‐4) is a microgravity complex plasma laboratory operated for 10 years on board the International Space Station. Its main purpose is the particle‐resolved investigation of generic condensed matter phenomena using strongly coupled suspensions of microparticles immersed in low‐pressure gas‐discharge plasmas.
M. Pustylnik, H. M. Thomas, M. Kretschmer, M. Thoma   +3 more
wiley   +1 more source

The Proper Motion of Strongly Lensed Binary Neutron Star Mergers in LIGO/Virgo/Kagra Can Be Constrained by Measuring Doppler-induced Gravitational-wave Dephasing

The Astrophysical Journal
Strongly lensed binary neutron star (NS–NS) mergers are expected to be observed once LIGO/Virgo/Kagra reaches the planned A+ or proposed A# sensitivity. We demonstrate that the relative transverse velocity of the source-lens system can be constrained by ...
Lorenz Zwick, Johan Samsing
doaj   +1 more source

Flux-limited strong gravitational lensing and dark energy

, 2004
In the standard flat cosmological constant ($\Lambda$) cold dark matter (CDM) cosmology, a model of two populations of lens halos for strong gravitational lensing can reproduce the results of the Jodrell-Bank VLA Astrometric Survey (JVAS) and the Cosmic ...
Chen, Da-Ming
core   +1 more source

Classroom boundaries and teacher agency: Challenges of implementing Ireland's new primary curriculum

The Curriculum Journal, EarlyView.
Abstract This article reports on a doctoral study examining teacher agency in one Irish primary school at a timely moment ahead of the implementation of the new Primary Curriculum Framework in September 2025. The framework embeds teacher agency as a central professional principle, yet findings from this study reveal a more cautious and bounded reality.
Máiréad Nally, Carmel O. Sullivan, Karin Bacon   +2 more
wiley   +1 more source

Strong Gravitational Lensing Parameter Estimation with Vision Transformer

, 2023
Quantifying the parameters and corresponding uncertainties of hundreds of strongly lensed quasar systems holds the key to resolving one of the most important scientific questions: the Hubble constant ($H_{0}$) tension. The commonly used Markov chain Monte Carlo (MCMC) method has been too time-consuming to achieve this goal, yet recent work has shown ...
Kuan-Wei Huang, Geoff Chih-Fan Chen, Po-Wen Chang, Sheng-Chieh Lin, Chia-Jung Hsu, Vishal Thengane, Joshua Yao-Yu Lin   +6 more
openaire   +2 more sources

COOL-LAMPS. VI. Lens Model and New Constraints on the Properties of COOL J1241+2219, a Bright z = 5 Lyman Break Galaxy and its z = 1 Cluster Lens

The Astrophysical Journal
We present a strong lensing analysis of COOL J1241+2219, the brightest known gravitationally lensed galaxy at z ≥ 5, based on new multiband Hubble Space Telescope (HST) imaging data. The lensed galaxy has a redshift of z = 5.043, placing it shortly after
Maxwell Klein, Keren Sharon, Kate Napier, Michael D. Gladders, Gourav Khullar, Matthew Bayliss, Håkon Dahle, M. Riley Owens, Antony Stark, Sasha Brownsberger, Keunho J. Kim, Nicole Kuchta, Guillaume Mahler, Grace Smith, Ryan Walker, Katya Gozman, Michael N. Martinez, Owen S. Matthews Acuña, Kaiya Merz, Jorge A. Sanchez, Daniel J. Kavin Stein, Ezra O. Sukay, Kiyan Tavangar   +22 more
doaj   +1 more source

Beyond goniometry: 3D digital twinning of droplets from a single image

Droplet, EarlyView.
We present a method to produce physics‐informed three‐dimensional digital twins of droplets from a single image for wettability analyses. We validate the method with goniometry and demonstrate its capabilities with advancing‐receding contact angle measurements, irregularly shaped droplets, and multi‐droplet systems, indicating strong potential for in ...
Isaac Berk, Emilie Luong, H. Jeremy Cho
wiley   +1 more source