Results 171 to 180 of about 61,905 (297)

Constraints on Dark Energy from Strong Gravitational Lensing by Galaxy Clusters [PDF]

, 2004
M. Meneghetti, C. Baccigalupi, Matthias Bartelmann, Klaus Dolag, L. Moscardini, F. Perrotta, G. Tormen   +6 more
openalex   +1 more source

An Economic Analysis of Difficulty Adjustment Algorithms in Proof‐of‐Work Blockchain Systems

International Economic Review, EarlyView.
ABSTRACT We study the stability of cryptocurrency systems through difficulty adjustment. Bitcoin's difficulty adjustment algorithm (DAA) exhibits instability when the reward elasticity of the hash rate is high, implying that a sharp price reduction could disrupt the current Bitcoin system.
Shunya Noda, Kyohei Okumura, Yoshinori Hashimoto   +2 more
wiley   +1 more source

Braneworld black hole gravitational lens: Strong field limit analysis [PDF]

, 2005
Ernesto F. Eiroa
openalex   +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

A Strong Gravitational Lens Is Worth a Thousand Dark Matter Halos: Inference on Small-scale Structure Using Sequential Methods

The Astrophysical Journal
Strong gravitational lenses are a singular probe of the Universe’s small-scale structure—they are sensitive to the gravitational effects of low-mass (
Sebastian Wagner-Carena, Jaehoon Lee, Jeffrey Pennington, Jelle Aalbers, Simon Birrer, Risa H. Wechsler   +5 more
doaj   +1 more source

Tending to the Particular: Navigating Tensions Around Principles of Alternativity Through an Ethics of Care

Journal of Management Studies, EarlyView.
Abstract Alternative organizations must continuously address conflicts that emerge regarding diverging prioritizations and interpretations of autonomy, solidarity, and responsibility. We explore how tensions around alternative moral principles can be navigated through relational processes that attune to others' needs, emotions, and concerns.
Jonas Friedrich, Christina Lüthy
wiley   +1 more source

Lens Modeling of STRIDES Strongly Lensed Quasars Using Neural Posterior Estimation

The Astronomical Journal
Strongly lensed quasars can be used to constrain cosmological parameters through time-delay cosmography. Models of the lens masses are a necessary component of this analysis.
Sydney Erickson, Sebastian Wagner-Carena, Phil Marshall, Martin Millon, Simon Birrer, Aaron Roodman, Thomas Schmidt, Tommaso Treu, Stefan Schuldt, Anowar J. Shajib, Padma Venkatraman, The LSST Dark Energy Science Collaboration   +11 more
doaj   +1 more source

Pushing the limits of detectability: mixed dark matter from strong gravitational lenses. [PDF]

Mon Not R Astron Soc, 2023
Keeley RE, Nierenberg AM, Gilman D, Birrer S, Benson A, Treu T.   +5 more
europepmc   +1 more source

Strong Gravitational Lens Inversion: A Bayesian Approach [PDF]

, 2006
Brendon J. Brewer, Geraint F. Lewis
openalex   +1 more source

“Seen Again”: Ethnography, Immersive Technologies, and Temporality in the Siberian Collections at the Pitt Rivers Museum

Museum Anthropology, EarlyView.
ABSTRACT This paper proposes Virtual Reality (VR) and 360 film as promising fieldwork tools for addressing problematic temporalities in ethnographic museums and for collaborating with communities of origin. Focusing on the Maria Czaplicka Siberian collections at the Pitt Rivers Museum, Oxford, we examine how previous methods of display marginalized the
Anya Gleizer, Jaanika Vider, Pablo Fernández Velasco   +2 more
wiley   +1 more source