Results 81 to 90 of about 71,531 (348)

Lensing galaxies: light or dark? [PDF]

, 1998
In a recent paper, Hawkins (1997) argues on the basis of statistical studies of double-image gravitational lenses and lens candidates that a large population of dark lenses exists and that these outnumber galaxies with more normal mass-to-light ratios by
Browne, I. W. A., Fassnacht, C. D., Helbig, P., Jackson, N., Koopmans, L. V. E., Marlow, D. R., Wilkinson, P. N.   +6 more
core   +3 more sources

Circular Economy Platforms: A Systematic Review

Business Strategy and the Environment, EarlyView.
ABSTRACT Digital platforms enable circular business models that can provide both economic and environmental benefits. However, the literature on platforms in the context of the circular economy has remained descriptive and fragmented across fields, posing challenges for synthesizing accumulated knowledge.
Outi Blackburn, Paavo Ritala, Joona Keränen, Nancy Bocken   +3 more
wiley   +1 more source

Gravitational lensing by a dark compact object in modified gravity and observational constraints from Einstein rings

European Physical Journal C: Particles and Fields
In this manuscript, we provide a comprehensive study of gravitational lensing by dark compact objects predicted by modified gravity (MOG) based on the scalar–vector–tensor action, with the aim of providing new insights into the nature of gravitational ...
Nagina Rehman, Zoe C. S. Chan, Mubasher Jamil, Mustapha Azreg-Aïnou   +3 more
doaj   +1 more source

A VLA Gravitational Lens Survey [PDF]

Symposium - International Astronomical Union, 1987
Gravitational lens surveys are of cosmological interest because they provide a way to measure the gravitational field of both luminous and dark matter. Many of the other methods used to detect the presence of dark matter, such as studies of galaxy rotation curves and cluster dynamics, require that there be luminous objects in the gravitational field ...
J. N. Hewitt, E. L. Turner, B. F. Burke, C. R. Lawrence, C. L. Bennett, G. I. Langston, J. E. Gunn   +6 more
openaire   +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

Inferring Properties of Dark Galactic Halos Using Strongly Lensed Gravitational Waves

The Astrophysical Journal
Gravitational waves (GWs) can be deflected, similarly to electromagnetic (EM) waves, by massive objects through the phenomenon of gravitational lensing .
Eungwang Seo, Tjonnie G. F. Li, Martin A. Hendry   +2 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

Gravitational lens surveys with LOFAR [PDF]

Proceedings of From Planets to Dark Energy: the Modern Radio Universe — PoS(MRU), 2008
Deep surveys planned as a Key Science Project of LOFAR provide completely new opportunities for gravitational lens searches. For the first time do large-scale surveys reach the resolution required for a direct selection of lens candidates using morphological criteria. We briefly describe the strategies that we will use to exploit this potential.
Olaf Wucknitz, Michael Garrett
openaire   +1 more source

Matching your way to Success: The Influence of Motivational Frame Matching on Interaction Outcomes and Reciprocal Matching

European Journal of Social Psychology, EarlyView.
ABSTRACT Theories of interpersonal sensemaking postulate that positive interactions emerge in interactions where speakers match on motivational frames. Across three experiments (N = 1609) using a hypothetical simulation framework, we provide the first evidence of a causal link between motivational frame matching and positive interaction outcomes in ...
Mattias Sjöberg, Paul J. Taylor, Stacey M. Conchie   +2 more
wiley   +1 more source

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

Periodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis, Daniel Belstrøm, Sigrun Eick, Ulvi K. Gursoy, Anders Johansson, Eija Könönen   +5 more
wiley   +1 more source