Results 61 to 70 of about 30,981 (277)

Gravitational lensing phenomena of Ellis-Bronnikov-Morris-Thorne wormhole with global monopole and cosmic string

Physics Letters B
In this paper, we theoretically investigate gravitational lensing within the space-time framework of traversable wormholes, focusing on the combined effects of a global monopole and a cosmic string.
Faizuddin Ahmed, İzzet Sakallı, Ahmad Al-Badawi   +2 more
doaj   +1 more source

Probing the Universe with Weak Lensing [PDF]

, 1998
Gravitational lenses can provide crucial information on the geometry of the Universe, on the cosmological scenario of formation of its structures as well as on the history of its components with look-back time.
Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bartelmann M, Bernardeau F, Bernardeau F, Bernardeau F, Bernardeau F, Bingelli B, Blanchard A, Blandford RD, Bonnet H, Bézecourt J, Bézecourt J, Bézecourt J, Böhringer H, Casoli F, Cayón L, Cooray AR, Fort B, Fort B, Fort B, Fugmann W, Garrido JL, Hammer F, Hattori M, Kneib J-P, Kneib J-P, Kneib J-P, Kneib J-P, Kochanek CS, Lombardi M, Lombardi M, Lombardi M, Lynds R, Lémonon L, Maddox SJ, Mellier Y, Pelló R, Pierre M, Puget J-L, Reblinksy K, Schindler S, Schneider P, Schneider P, Schneider P, Schneider P, Schramm T, Seitz C, Seitz C, Seitz C, Seitz S, Seitz S, Seitz S, Smail I, Soucail G, Soucail G, Van Waerbeke L, Van Waerbeke L, Van Waerbeke L, Van Waerbeke L, Yannick Mellier, Zel'dovich YB, Zhu Z-H, Zwicky F   +70 more
core   +2 more sources

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Modeling the Impacts of Galaxy Intrinsic Alignments on Weak Lensing Peak Statistics

The Astrophysical Journal
Weak gravitational lensing (WL) peak statistics capture cosmic nonlinear structures and can provide additional cosmological information complementary to cosmic shear two-point correlation analyses.
Tianyu Zhang, Xiangkun Liu, Ziwei Li, Chengliang Wei, Guoliang Li, Yu Luo, Xi Kang, Zuhui Fan   +7 more
doaj   +1 more source

Gravitational lensing by a black-bounce-Reissner–Nordström spacetime

European Physical Journal C: Particles and Fields, 2022
We investigate the weak and strong deflection gravitational lensing by a black-bounce-Reissner–Nordström spacetime and obtain their lensing observables. Assuming the supermassive black holes in the Galactic Center and at the center of M87, Sgr A* and M87*
Jing Zhang, Yi Xie
doaj   +1 more source

Reducing the weak lensing noise for the gravitational wave Hubble diagram using the non-Gaussianity of the magnification distribution [PDF]

, 2010
Gravitational wave sources are a promising cosmological standard candle because their intrinsic luminosities are determined by fundamental physics (and are insensitive to dust extinction).
C. Shapiro, Christopher M. Hirata, Curt Cutler, Daniel E. Holz, J. Wambsganss, J. N. Bode, M. Milosavljević, N. Dalal, Y. Wang, Z. Lippai   +9 more
core   +2 more sources

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, EarlyView.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source

Weak-lensing Approximation of Wave-optics Effects from General Symmetric Lens Profiles

The Astrophysical Journal
Gravitational lensing of electromagnetic (EM) waves has yielded many profound discoveries across fundamental physics, astronomy, astrophysics, and cosmology. Similar to EM waves, gravitational waves (GWs) can also be lensed.
Zhao-Feng Wu, Otto A. Hannuksela, Martin Hendry, Quynh Lan Nguyen   +3 more
doaj   +1 more source

Modeling the separation of water‐in‐oil emulsions in continuously fed gravity settlers using millifluidic experiments

AIChE Journal, EarlyView.
Abstract Emulsion separation remains a persistent challenge in chemical and process industries due to the metastable nature of dispersed droplets. In gravity separators, the overall separation rate is governed by the formation of a densely packed zone (DPZ) of deforming and coalescing droplets that mediates between the dispersed and continuous phases ...
Andrei Zlobin, José Esteban Andino‐Enriquez, Thomas Gouëzec, Maurice Bourrel, Enric Santanach‐Carreras, Nicolas Passade‐Boupat, Laurence Talini, François Lequeux, Pascal Panizza   +8 more
wiley   +1 more source

Weak gravitational lensing

25 pagers, 14 figures.
Prat, J., Bacon, D.
openaire   +2 more sources