Results 31 to 40 of about 165,391 (125)

INHERITANCE AND INCEST: TOWARD A LÉVI‐STRAUSSIAN READING OF MONTESQUIEU'S DE L'ESPRIT DES LOIS1

open access: yesHistory and Theory, Volume 64, Issue 1, Page 46-74, March 2025.
ABSTRACT The premise of this article is that Montesquieu, while seen as an Enlightenment thinker who contributed centrally to the development of the social sciences before the period of discipline formation in the nineteenth century, is generally appreciated in only the vaguest of terms.
Paul Cheney
wiley   +1 more source

Constraints on Compact Dark Matter from the Nonobservation of Gravitational-wave Strong Lensing

open access: yesThe Astrophysical Journal
We use the nonobservation of strong lensing of gravitational waves (GWs) in the first three observation runs of the LIGO and Virgo detectors to constrain the fraction of dark matter in the form of compact objects (COs) in the mass range 10 ^6 −10 ^9 M _⊙
A. Barsode, S. J. Kapadia, P. Ajith
doaj   +1 more source

The Bianchi identity and weak gravitational lensing [PDF]

open access: yesClass.Quant.Grav. 22 (2005) 2921-2932, 2005
We consider the Bianchi identity as a field equation for the distortion of the shapes of images produced by weak gravitational lensing. Using the spin coefficient formalism of Newman and Penrose [1962], we show that certain complex components of the Weyl and Ricci curvature tensors are directly related to fundamental observables in weak gravitational ...
arxiv   +1 more source

Recent Developments in Degenerate Higher Order Scalar Tensor Theories

open access: yesAnnalen der Physik, Volume 537, Issue 2, February 2025.
Degenerate Higher Order Scalar Tensor theories are reviewed, together with their applications in cosmology and astrophysics. These theories have been applied to build models of the early universe, in the description of the late‐time cosmic acceleration, as well as in astrophysics, including black hole physics. They have the potential to provide answers
Andrei Lazanu
wiley   +1 more source

The top‐down nature of ontological inquiry: Against pluralism about top‐down and bottom‐up approaches

open access: yesMetaphilosophy, Volume 56, Issue 1, Page 35-51, January 2025.
Abstract Some philosophical pluralists argue that a top‐down and a bottom‐up approach serve as equally justified methods for engaging in ontological inquiry. In the top‐down approach, we start with an analysis of theory and extrapolate from there to the world.
Ragnar van der Merwe
wiley   +1 more source

Gravitational lensing in braneworld gravity: formalism and applications [PDF]

open access: yesClass.Quant.Grav.25:045003 (2008), 2007
In this article, we develop a formalism which is different from the standard lensing scenario and is necessary for understanding lensing by gravitational fields which arise as solutions of the effective Einstein equations on the brane. We obtain general expressions for measurable quantities such as time delay, deflection angle, Einstein ring and ...
arxiv   +1 more source

Light bending and gravitational lensing in Brans-Dicke theory

open access: yesPhysics Letters B, 2019
As an important candidate theory of gravity, Brans-Dicke theory has been widely studied. In this paper, we investigate light bending and gravitational lensing by compact objects in Brans-Dicke theory in weak gravitational field.
Xiaojun Gao, Shupeng Song, Jinsong Yang
doaj  

Recursion relations for gravitational lensing [PDF]

open access: yesGeneral Relativity and Gravitation 52 (2020), 3, 2019
The weak gravitational lensing formalism can be extended to the strong lensing regime by integrating a nonlinear version of the geodesic deviation equation. The resulting "roulette" expansion generalises the notion of convergence, shear and flexion to arbitrary order.
arxiv   +1 more source

Seeking Languagelessness: Maker Literacies Mindsets to Disrupt Normative Practices

open access: yesReading Research Quarterly, Volume 59, Issue 3, Page 298-312, July/August/September 2024.
This article challenges an over‐reliance on language as the primary means to communicate knowledge by adopting a languagelessness approach to maker pedagogies and maker literacies. Having conducted makerspace and design‐based research for some time, we separately and together noticed a productive relationship between wordless relational makerspace and ...
Jennifer Rowsell   +3 more
wiley   +1 more source

Viscosity Measurements at High Pressures: A Critical Appraisal of Corrections to Stokes' Law

open access: yesJournal of Geophysical Research: Solid Earth, Volume 129, Issue 5, May 2024.
Abstract Fluids and melts in planetary interiors significantly influence geodynamic processes from volcanism to global‐scale differentiation. The roles of these geofluids depend on their viscosities (η). Constraining geofluid η at relevant pressures and temperatures relies on laboratory‐based measurements and is most widely done using Stokes' Law ...
Aaron Wolfgang Ashley   +5 more
wiley   +1 more source

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