Results 41 to 50 of about 236,146 (270)
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 +3 more
doaj +1 more source
Gravitational lensing by a quantum deformed Schwarzschild black hole
European Physical Journal C: Particles and Fields, 2021 We investigate the weak and strong deflection gravitational lensing by a quantum deformed Schwarzschild black hole and find their observables. These lensing observables are evaluated and the detectability of the quantum deformation is assessed, after ...
Xu Lu, Yi Xie
doaj +1 more source
Formation and growth of multiple, distinct ice lenses in frost heave
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 47, Issue 1, Page 82-105, January 2023., 2023 Abstract This paper presents a fully coupled thermo‐hydro‐mechanical (THM) model which simulates frost heave in fully saturated soils. The model is able to simulate the formation and growth of multiple distinct ice lenses. The basic equations of the system were derived using the continuum theory of mixtures, nonequilibrium thermodynamics, and fracture ...
Hao Gao +5 more
wiley +1 more source
Time delay of photons coupled to Weyl tensor in a regular phantom black hole
European Physical Journal C: Particles and Fields, 2020 Time delay of the photons coupled to the Weyl tensor in a regular phantom black hole is investigated in both weak and strong deflection gravitational lensing. We find that the time delay in the weak deflection lensing strongly depends on the phantom hair
Xu Lu, Yi Xie
doaj +1 more source
Weak gravitational lensing by stringy black holes [PDF]
The European Physical Journal Plus, 2019 In this paper, we discuss the weak gravitational lensing in the context of stringy black holes. Initially, we examine the deflection angle of photon by charged stringy black hole.
W. Javed +3 more
semanticscholar +1 more source
Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field [PDF]
Chinese Physics C, High Energy Physics & Nuclear Physics, 2022 In this study, we observe that, in the presence of the string cloud parameter a and the quintessence parameter γ, with the equation of state parameter , the radius of the shadow of the Schwarzschild black hole increases as compared with that in the pure ...
G. Mustafa +4 more
semanticscholar +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 +8 more
doaj +1 more source
Cross-correlation of the thermal Sunyaev–Zel’dovich effect and weak gravitational lensing: Planck and Subaru Hyper Suprime-Cam first-year data [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Cross-correlation analysis of the thermal Sunyaev–Zel’dovich (tSZ) effect and weak gravitational lensing (WL) provides a powerful probe of cosmology and astrophysics of the intracluster medium. We present the measurement of the cross-correlation of tSZ
K. Osato +6 more
semanticscholar +1 more source
Earth's Future, Volume 10, Issue 12, December 2022., 2022 Abstract Anthropogenic greenhouse gas emissions are causing unprecedented changes to the climate. In 2015, at the United Nations (UN) Conference of the Parties in Paris, France, countries agreed to limit the global mean temperature (GMT) increase to 2°C above preindustrial levels, and to pursue efforts to limit warming to 1.5°C.
S. Sadai +3 more
wiley +1 more source
Second-order weak lensing from modified gravity [PDF]
, 2011 We explore the sensitivity of weak gravitational lensing to second-order corrections to the spacetime metric within a cosmological adaptation of the parameterized post-Newtonian framework.
Caldwell, Robert R. +2 more
core +3 more sources