Results 141 to 150 of about 59,945 (291)

A deconstruction of methods to derive one-point lensing statistics

The Open Journal of Astrophysics
Gravitational lensing is a crucial tool for exploring cosmic phenomena, providing insights into galaxy clustering, dark matter, and dark energy. Given the substantial computational demands of $N$-body simulations, approximate methods like $\texttt ...
Viviane Alfradique, Tiago Castro, Valerio Marra, Miguel Quartin, Carlo Giocoli, Pierluigi Monaco   +5 more
doaj   +1 more source

Strong deflection lensing by a Lee–Wick black hole

Physics Letters B, 2017
We study strong deflection gravitational lensing by a Lee–Wick black hole, which is a non-singular black hole generated by a high derivative modification of Einstein–Hilbert action.
Shan-Shan Zhao, Yi Xie
doaj   +1 more source

Cluster Mass Estimate Using Strong Gravitational Lenses Revisited [PDF]

, 1999
Takehiro Ono, K. Masai, Shin Sasaki
openalex   +1 more source

A Smithian Political Economy Approach for the Competition Law of the 21st Century

The Modern Law Review, EarlyView.
This study aims to show how a Smithian political economy approach could assist competition law in addressing the challenges of the 21st‐century economy. We revisit Smith's Wealth of Nations to provide a more nuanced understanding of his views, contrasting them with the prevailing libertarian interpretation called here ‘Chicago Smith’.
Stavros Makris
wiley   +1 more source

YOLOX-LS: Strong Gravitational Lenses Detection in the DECaLS with Deep Learning

The Astrophysical Journal
The identification of strong gravitational lenses is essential to facilitate many studies in astronomy. The search for strong gravitational lenses has become more challenging because of their scientific value and their rarity. In this paper, we construct
Yangyang Liu, Liangping Tu, Jianxi Li, Jiawei Miao, Gengqi Lin, Chenying Zhao   +5 more
doaj   +1 more source

Strong Gravitational Lensing on the Hubble Deep Field [PDF]

, 1999
R. D. Blandford
openalex   +1 more source

Commercial Surrogacy Is not a Secret Handshake: It Is a High‐Five: Gay Fathers in China’s Changing Landscape

The British Journal of Sociology, EarlyView.
ABSTRACT In 2023, China introduced regulatory amendments to birth certificates and the hukou (household registration) system, aiming to boost birth rates and offset an aging population. However, the implications of these changes on marriage and family support amidst population policy shifts remain underexplored.
Eileen Y. H. Tsang
wiley   +1 more source

Testing the Cosmic Distance Duality Relation Using Strong Gravitational Lensing Time Delays and Type Ia Supernovae

The Astrophysical Journal
We present a comprehensive test of the cosmic distance duality relation (DDR) using a combination of strong gravitational lensing (SGL) time delay measurements and Type Ia supernovae (SNe Ia) data.
Jing-Zhao Qi, Yi-Fan Jiang, Wan-Ting Hou, Xin Zhang   +3 more
doaj   +1 more source

Gravitational lensing effects of fermion–fermion stars: strong field case [PDF]

, 2000
Kejian Jin, Yuan‐Zhong Zhang, Zong‐Hong Zhu   +2 more
openalex   +1 more source

The ideological profile of the technocratic citizen

European Journal of Political Research, Volume 64, Issue 2, Page 626-648, May 2025.
Abstract A certain type of citizen holds technocratic views. They favour pragmatic problem solving through scientific and technical expertise, and reject party politics for being harmful to the common good. Yet, empirical evidence on the ideological profile of these citizens is fragmented and inconclusive.
ERI BERTSOU, DANIELE CARAMANI, JELLE KOEDAM   +2 more
wiley   +1 more source