Results 111 to 120 of about 72,022 (266)

Tidal dwarf galaxies as a test of fundamental physics

, 2007
Within the cold dark matter (CDM) framework tidal dwarf galaxies (TDGs) cannot contain dark matter, so the recent results by Bournaud et al. (2007) that 3 rotating TDGs do show significant evidence for being dark matter dominated is inconsistent with the
Alvensleben, B. Famaey, Barnes, Begeman, Bournaud, Bournaud, Braine, Calura, Delgado-Donate, Duc, Duc, F. Combes, Famaey, Famaey, G. Gentile, Gentile, Gentile, H. S. Zhao, McGaugh, Metz, Milgrom, Milgrom, Milgrom, Mirabel, Monreal-Ibero, O. Tiret, Okazaki, P. Kroupa, Sancisi, Sanders, Skillman, Sofue, Zhao, Zhao, Łokas   +34 more
core   +3 more sources

Work Versus Force: Simultaneous Processes for Describing Interactions

Advanced Physics Research, EarlyView.
ABSTRACT Achieving a unified description of interactions remains an open challenge in theoretical physics, which currently describes four fundamental forces. This situation may be viewed differently when interactions are formulated in terms of processes (work as actio) rather than forces (force as actio), not only at the macroscopic level but also at ...
Grit Kalies, Duong D. Do, Cornelia Breitkopf   +2 more
wiley   +1 more source

Probing the Nature of Gravity in the Low-acceleration Limit: Wide Binaries of Extreme Separations with Perspective Effects

The Astrophysical Journal
Recent statistical analyses of wide binaries have revealed a boost in gravitational acceleration with respect to the prediction by Newtonian gravity at low internal accelerations ≲10 ^−9 m s ^−2 .
Youngsub Yoon, Yong Tian, Kyu-Hyun Chae
doaj   +1 more source

Modified magnetic flow of Williamson nanofluid over a stretching sheet with Newtonian heating

Data Analytics and Applied Mathematics
In systems where heat transfer and flow dynamics are crucial, the Williamson nanofluid model is a useful tool for studying non-Newtonian fluids. Numerous industrial applications, such as energy systems, manufacturing processes, and thermal management ...
Nur Syamilah Arifin, Abdul Fatah Zainuddin, Ahmad Khudzairi Khalid, Nur Intan Syafinaz Ahmad, Wan Munirah Wan Mohamad, Abdul Rahman Mohd Kasim, Imran Ullah   +6 more
doaj   +1 more source

Distant star clusters of the Milky Way in MOND

, 2011
We determine the mean velocity dispersion of six Galactic outer halo globular clusters, AM 1, Eridanus, Pal 3, Pal 4, Pal 15, and Arp 2 in the weak acceleration regime to test classical vs. modified Newtonian dynamics (MOND).
Angus, Angus, Angus, Baumgardt, Baumgardt, Begmann, Begmann, Bekenstein, Bekenstein, Bosch, Brada, Ciotti, Clowe, Famaey, Famaey, Gentile, Gentile, Governato, H. Baumgardt, H. Haghi, Haghi, Haghi, Harris, Hasani Zonoozi, Jordi, Klypin, Kroupa, Küpper, Londrillo, Malekjani, Metz, Mieske, Milgrom, Milgrom, Milgrom, Milgrom, Milgrom, Moore, Moore, Nipoti, P. Kroupa, Sanchez-Salcedo, Sanders, Sanders, Sollima, Spergel, Tiret, Wu, Wu, Zhao, Zlosnik   +50 more
core   +1 more source

Metasurface Enhanced Photothermal Cement Foam for Robust and High‐Throughput Seawater Desalination

Carbon Energy, EarlyView.
Schematic of 3D metasurface‐enhanced cement foam for robust and high‐throughput seawater desalination. This study presents a cement‐based solar evaporator (CSE) fabricated in one step via viscoelastic lithography with simple negative pressure. In addition to boosting solar‐to‐vapor conversion efficiency via excellent light‐harvesting capacity, the ...
Jianjun Guo, Zhenxing Du, Wenqiang Zuo, Zhangyu Wu, Wei She   +4 more
wiley   +1 more source

On the Evidence for the Violation of the Equivalence Principle in Disk Galaxies

Particles
We examine the claimed observations of a gravitational external field effect (EFE) reported by Chae et al. We show that observations suggestive of the EFE can be interpreted without violating Einstein’s equivalence principle, namely from known ...
Corey Sargent, William Clark, Antonia Seifert, Alicia Mand, Emerson Rogers, Adam Lane, Alexandre Deur, Balša Terzić   +7 more
doaj   +1 more source

Gravitational polarization and the phenomenology of MOND

, 2007
The modified Newtonian dynamics (MOND) has been proposed as an alternative to the dark matter paradigm; the philosophy behind is that there is no dark matter and we witness a violation of the Newtonian law of dynamics.
Bekenstein J, Blanchet L, Cohen-Tannoudji C, Gerbal D, Jackson J, Luc Blanchet, Papapetrou A, Sanders R, Sanders R, Tully R   +9 more
core   +4 more sources

Comparison of modelling approaches for liquid fluidized beds

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study presents a comparison of three promising numerical models for the detailed simulation of liquid–solid fluidized bed. These models differ in their treatment of the solid phase, ranging from treating each particle individually to treating the collection of particles as a continuum.
Andreu Bernad‐Serra, Furkhat Khamitov, Olli H. Sorvari, Ville Alopaeus   +3 more
wiley   +1 more source

Open Star Clusters and Their Asymmetrical Tidal Tails

The Astrophysical Journal
Stars that evaporate from their star cluster by the energy equipartition process end up in either a leading or a trailing tidal tail. In Newtonian gravitation and for open star clusters in the solar vicinity, the tidal threshold, or práh, for escape is ...
Pavel Kroupa, Jan Pflamm-Altenburg, Sergij Mazurenko, Wenjie Wu, Ingo Thies, Vikrant Jadhav, Tereza Jerabkova   +6 more
doaj   +1 more source