Results 71 to 80 of about 63,611 (230)

Non-parametric inversion of gravitational lensing systems with few images using a multi-objective genetic algorithm

, 2007
Galaxies acting as gravitational lenses are surrounded by, at most, a handful of images. This apparent paucity of information forces one to make the best possible use of what information is available to invert the lens system.
Abdelsalam, Blandford, Bradač, Broadhurst, Charbonneau, Deb, Diego, H. Dejonghe, Holland, J. Liesenborgs, Keeton, Kneib, Kochanek, Koopmans, Koza, Liesenborgs, P. Bekaert, Plummer, S. De Rijcke, Saha, Saha, Schneider, Shamos   +22 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

LenNet: direct detection and localization of strong gravitational lenses in wide-field sky survey images

Frontiers in Astronomy and Space Sciences
Strong gravitational lenses are invaluable for tackling fundamental astrophysics questions, such as the nature of dark matter and cosmic expansion.
Pufan Liu, Pufan Liu, Hui Li, Ziqi Li, Ziqi Li, Xiaoyue Cao, Xiaoyue Cao, Xiaoyue Cao, Rui Li, Hao Su, Ran Li, Nicola R. Napolitano, Léon V. E. Koopmans, Valerio Busillo, Crescenzo Tortora, Liang Gao, Liang Gao   +16 more
doaj   +1 more source

A Spectroscopic Survey of the Fields of 28 Strong Gravitational Lenses: Implications for $H_0$

, 2017
Strong gravitational lensing provides an independent measurement of the Hubble parameter ($H_0$). One remaining systematic is a bias from the additional mass due to a galaxy group at the lens redshift or along the sightline.
French, K. Decker, Keeton, Charles R., Momcheva, Ivelina G., Williams, Kurtis A., Wilson, Michelle L., Wong, Kenneth C., Zabludoff, Ann I.   +6 more
core   +1 more source

Dynamics of bubble absorption over porous membranes in an immersed medium

Droplet, EarlyView.
The dynamics of a bubble interacting with a flat, porous superhydrophobic membrane underwater has been illustrated. Abstract Porous superhydrophobic (SHP) membranes are gaining considerable attention due to their excellent underwater absorption and drag reduction properties. They exploit the Cassie‒Baxter state of wetting to remove the bubble in a fast
Kiran Raj M
wiley   +1 more source

Droplet friction on superhydrophobic surfaces

Droplet, EarlyView.
By developing an experimental setup that simultaneously measures the friction force, macroscopic shape profile, and the macro‐ and microscopic contact line dynamics of a laterally sliding droplet, this study establishes an analytical model that predicts droplet friction on pillared superhydrophobic surfaces relying only on surface geometrical ...
Youhua Jiang, Chuanqi Wei
wiley   +1 more source

Velocity effects on second order contributions to gravitational frequency shift by a moving Kerr–Newman black hole

European Physical Journal C: Particles and Fields, 2019
The significance of the radial velocity effects on the leading-order gravitational frequency shift in some special cases was reported recently. This paper investigates the gravitational shift of frequency of light propagating in the equatorial plane of a
Guansheng He, Chaohong Pan, Wenbin Lin
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

A New Way to Discover Strong Gravitational Lenses: Pairwise Spectroscopic Search from DESI DR1

The Astrophysical Journal Supplement Series
We present a new method to search for strong gravitational-lensing systems by pairing spectra that are close together on the sky in a spectroscopic survey. We visually inspect 26,621 spectra in the Dark Energy Spectroscopic Instrument (DESI) Data Release
Yuan-Ming Hsu, Xiaosheng Huang, Christopher J. Storfer, Jose Carlos Inchausti, David Schlegel, John Moustakas, J. Aguilar, S. Ahlen, A. Anand, S. Bailey, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, J. Della Costa, Arjun Dey, Biprateep Dey, P. Doel, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, D. Huterer, R. Joyce, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, O. Lahav, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, S. Nadathur, N. Palanque-Delabrouille, W. J. Percival, F. Prada, I. Pérez-Ràfols, G. Rossi, E. Sanchez, M. Schubnell, J. Silber, D. Sprayberry, G. Tarlé, B. A. Weaver, R. Zhou, H. Zou, (DESI Collaboration)   +50 more
doaj   +1 more source

Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky. [PDF]

Nat Astron, 2023
Goobar A, Johansson J, Schulze S, Arendse N, Carracedo AS, Dhawan S, Mörtsell E, Fremling C, Yan L, Perley D, Sollerman J, Joseph R, Hinds KR, Meynardie W, Andreoni I, Bellm E, Bloom J, Collett TE, Drake A, Graham M, Kasliwal M, Kulkarni SR, Lemon C, Miller AA, Neill JD, Nordin J, Pierel J, Richard J, Riddle R, Rigault M, Rusholme B, Sharma Y, Stein R, Stewart G, Townsend A, Vinko J, Wheeler JC, Wold A.   +37 more
europepmc   +1 more source