Results 111 to 120 of about 3,204 (220)
Astronomy & AstrophysicsThermodynamic profiles from X-ray and millimetre observations of galaxy clusters are often compared under the simplifying assumptions of a smooth, spherically symmetric intracluster medium.
De Luca F. +27 more
doaj +1 more source
Transverse Velocities in Real-Time Cosmology: Position Drift in Relativistic N-Body Simulations
The Open Journal of AstrophysicsThe era of real-time cosmology has begun. It is now possible to directly measure the apparent drift of high-redshift astronomical sources across the sky $\textit{in real time}$.
Alexander Oestreicher +3 more
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Global Spacetime Structure [PDF]
, 2011 Here, we outline the basic structure of relativistic spacetime and record a number of facts. We then consider a distinction between local and global spacetime properties and provide important examples of each.
Manchak, John Byron
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Nonlinear perturbations in Relativistic cosmology
, 2015 학위논문(박사)--서울대학교 대학원 :자연과학대학 물리·천문학부,2015. 2. 이수종.In this dissertation, we discuss the inhomogeneity growth in the universe. The inhomogeneity growth is originated from the gravitational instability and we consider the Newtonian and the Einstein gravity ...
변상규
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Quantum Mechanics on Spacetime I: Spacetime State Realism [PDF]
, 2009 What ontology does realism about the quantum state suggest? The main extant view in contemporary philosophy of physics is wave-function realism. We elaborate the sense in which wave-function realism does provide an ontological picture; and defend it from
Wallace, David +3 more
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Two formulations of superfluidity are reviewed: Landau’s phenomenological two-fluid model and a relativistic effective field theory description.
Heliudson Bernardo, Aline Favero
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Unified Dark Matter scalar field models with fast transition
, 2011 We investigate the general properties of Unified Dark Matter (UDM) scalar field models with Lagrangians with a non-canonical kinetic term, looking specifically for models that can produce a fast transition between an early Einstein-de Sitter CDM-like era
Bertacca, Daniele +9 more
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Cosmology and the Early Universe
, 2018 This book discusses cosmology from both an observational and a strong theoretical perspective. The first part focuses on gravitation, notably the expansion of the universe and determination of cosmological parameters, before moving onto the main emphasis
Di Bari, Pasquale
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, 2006 I review various ideas on MOND cosmology and structure formation beginning with non-relativistic models in analogy with Newtonian cosmology. I discuss relativistic MOND cosmology in the context of Bekenstein's theory and propose an alternative biscalar ...
Combes, F +5 more
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Aspects of Objectivity in Quantum Mechanics [PDF]
, 1998 The purpose of the paper is to explore different aspects of the covariance of (mostly) non-relativistic quantum mechanics. First, doubts are expressed concerning the claim that gauge fields can be 'generated' by way of imposition of (local) gauge ...
Harvey R Brown, Brown, Harvey R
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