Results 141 to 150 of about 64,331 (279)

A deconstruction of methods to derive one-point lensing statistics

The Open Journal of Astrophysics
Gravitational lensing is a crucial tool for exploring cosmic phenomena, providing insights into galaxy clustering, dark matter, and dark energy. Given the substantial computational demands of $N$-body simulations, approximate methods like $\texttt ...
Viviane Alfradique, Tiago Castro, Valerio Marra, Miguel Quartin, Carlo Giocoli, Pierluigi Monaco   +5 more
doaj   +1 more source

Ellipticities of Galaxy Cluster Halos from Halo–Shear–Shear Correlations

The Astrophysical Journal
We report the first detection of the halo ellipticities of galaxy clusters by applying the halo–shear–shear correlations (HSSCs), without the necessity of using major axis determination.
Zhenjie Liu, Jun Zhang, Cong Liu, Hekun Li   +3 more
doaj   +1 more source

Navigating the Uncertainties of Post‐disruption Dynamics in Discourse: A Case Study of the EU–UK Security Relationship After Brexit

JCMS: Journal of Common Market Studies, EarlyView.
Abstract The article presents a model that conceptualizes the discursive construction of post‐disruption dynamics endorsed and reproduced by the affected parties and its potential to (not) contribute to future co‐operation. Conceiving of Brexit as a prime case of a broader phenomenon of post‐disruption contexts, this paper applies this model to the ...
Monika Brusenbauch Meislová
wiley   +1 more source

When Great Powers Struggle: How Geopolitical Alignments of Small States Are Influenced by Their MNEs

Journal of Management Studies, EarlyView.
Abstract Comparing two distinct deglobalization periods, this study shows how Finnish multinational enterprises (MNEs) used corporate diplomatic activities (CDA) to influence Finland's alignment with a struggling great power. Drawing from hegemonic stability theory and new institutional economics, we argue that the power's collapsing global networks ...
Saara Matala, Christian Stutz
wiley   +1 more source

Weak Gravitational Lensing by a Sample of X-Ray Luminous Clusters of Galaxies -- II. Comparison with Virial Masses

, 2002
Dynamic velocity dispersion and mass estimates are given for a sample of five X-ray luminous rich clusters of galaxies at intermediate redshifts (z~0.3) drawn from a sample of 39 clusters for which we have obtained gravitational lens mass estimates.
Adami C., Briel U. G., Colless M., Ebeling H., Eke V. R., Hakon Dahle, Lavery R. J., Liang H., Lilje P. B., Navarro J. F., Per B. Lilje, Ragnvald J. Irgens, S. J. Maddox, White S. D. M., Zwicky F.   +14 more
core   +1 more source

Indefinitely Flat Circular Velocities and the Baryonic Tully–Fisher Relation from Weak Lensing [PDF]

Astrophysical Journal Letters
We use a new deprojection formula to infer the gravitational potential around isolated galaxies from weak gravitational lensing. The results imply circular velocity curves that remain flat for hundreds of kiloparsecs, greatly extending the classic result
Tobias Mistele, S. McGaugh, F. Lelli, Jim Schombert, Pengfei Li   +4 more
semanticscholar   +1 more source

Dark Matter Halos of Luminous Active Galactic Nuclei from Galaxy–Galaxy Lensing with the HSC Subaru Strategic Program

The Astrophysical Journal
We assess the dark matter halo masses of luminous active galactic nuclei (AGNs) over the redshift range 0.2–1.2 using galaxy–galaxy lensing based on imaging data from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP).
Wentao Luo, John D. Silverman, Surhud More, Andy Goulding, Hironao Miyatake, Takahiro Nishimichi, Chiaki Hikage, Lalitwadee Kawinwanichakij, Junyao Li, Qinxun Li, Xiangchong Li, Elinor Medezinski, Masamune Oguri, Taira Oogi, Cristobal Sifon   +14 more
doaj   +1 more source

Microtextures and structures in metal–sulfide grains in NWA 869 meteorite and their relation to thermal history of L‐chondrite parent body

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 616-631, March 2025.
Abstract Results of microanalysis study of NWA 869 meteorite, an ordinary chondrite, where silicates, Fe‐Ni alloys, and troilite are major constituents, are reported. The presented study of microtextures in metallic and sulfide grains provides information on processes occurring from the asteroid's accretion, through the impacts until cooling.
Paulina Skirak, Gabriela Opiła, Adam Piestrzyński, Gabriela Kozub‐Budzyń, Czesław Kapusta   +4 more
wiley   +1 more source

Self-Gravitating Systems in Extended Gravity

Galaxies, 2014
Starting from the weak field limit, we discuss astrophysical applications of Extended Theories of Gravity where higher order curvature invariants and scalar fields are considered by generalizing the Hilbert-Einstein action linear in the Ricci curvature ...
Arturo Stabile, Salvatore Capozziello
doaj   +1 more source

A Sweeter Music: Two Essays and a Colloquy on an Elgar Part‐Song

Music Analysis, EarlyView.
ABSTRACT Edward Elgar's 1907 part‐song ‘There Is Sweet Music’ (Op. 53 No. 1) is at once a ‘minor’ piece and a highly significant one that richly rewards investigation. It is notable as an early instance of bitonality, being notated simultaneously in two keys – the male choir in G major and the female choir in A♭. Yet despite the apparent discordance of
Patrick McCreless, Benedict Taylor
wiley   +1 more source