Results 1 to 10 of about 165,391 (125)
Perturbation effect of stellar spots on light curves of gravitational microlensing [PDF]
Iranian Journal of Physics Research, 2021 One of the advantages of observations of gravitational microlensing is stellar spots detection. Our aim in this paper is to study and characterize the perturbations due to stellar spots on the microlensing light curves.
S Sajadian, M Rashidi
doaj +1 more source
Gravitational lensing and tunneling of mechanical waves in synthetic curved spacetime
Physical Review Research, 2023 Black holes are considered among the most fascinating objects that exist in our universe since in the classical formalism nothing, not even light, can escape from their vicinity due to gravity.
Sayan Jana, Lea Sirota
doaj +1 more source
Discriminating power of milli-lensing observations for dark matter models [PDF]
A&A 668, A166 (2022), 2022 The nature of dark matter (DM) is still under intense debate. Sub-galactic scales are particularly critical, as different, currently viable DM models make diverse predictions on the expected abundance and density profile of DM haloes on these scales.
arxiv +1 more source
Fortschritte der Physik, Volume 71, Issue 8-9, September 2023., 2023 Abstract The momentum and Hamiltonian constraints of vacuum Einstein equations, within the Bowen‐York formalism, for two interacting black holes in close separation, with anti‐parallel spins and anti‐parallel linear momenta is studied. An analytical solution using perturbation theory is given.
Emel Altas, Emine Ertugrul, Bayram Tekin
wiley +1 more source
Advanced Photonics Research, Volume 4, Issue 7, July 2023., 2023 Combined with the polarization state of light, orbital angular momentum (OAM) can be utilized as a degree of freedom to selectively excite the desired multipoles in nanoparticles. Different scattering characteristics of the excited modes result in interesting features in the imparted optical forces which is of importance in various applications ...
Mohammad Mojtaba Sadafi +3 more
wiley +1 more source
Artificial Intelligence and Advanced Materials
Advanced Materials, Volume 35, Issue 23, June 8, 2023., 2023 Artificial intelligence in general and machine learning in particular are gaining ever more importance in science and technology. In materials science, they are taking over tedious screening tasks and helping design and discover materials based on both explicit and tacit previous knowledge possessed by the scientist.
Cefe López
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 24, Issue 3, March 2023., 2023 Abstract Giant volcanic eruptions have the potential to overturn civilizations. Yet, the driving mechanism and timescale over which batholithic magma reservoirs transition from non‐eruptible crystal mush to mobile melt‐dominated stages and our capacity to detect a pending super‐eruption remain obscure.
G. Weber, J. Blundy, D. Bevan
wiley +1 more source
IS THERE A DISTINCTIVE QUANTUM THEOLOGY?
Zygon®, Volume 58, Issue 1, Page 265-284, March 2023., 2023 Abstract Quantum mechanics (QM) is a favorite area of physics to feature in “science and religion” discussions. We argue that this is at least partly because the arcane results of QM can be deployed to make big theological claims by the linguistic sleight of hand of “register switching”—sliding imperceptibly from technical into everyday language using ...
Wilson C. K. Poon, Tom C. B. McLeish
wiley +1 more source
Journal of High Energy Physics, 2020 We investigate the possible existence of graviballs, a system of bound gravitons, and show that two gravitons can be bound together by their gravitational interaction.
B. Guiot, A. Borquez, A. Deur, K. Werner
doaj +1 more source
Journal of Geophysical Research: Atmospheres, Volume 127, Issue 10, 27 May 2022., 2022 Abstract Stratospheric injections of carbonaceous aerosols and combustion gases by extreme wildfires have become increasingly common. Recent “megafires,” particularly large and intense fires, delivered particulate burdens to the lower stratosphere comparable to those of moderate volcanic eruptions.
Gennaro D’Angelo +4 more
wiley +1 more source