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Self-gravitating systems evolve toward the most tightly bound configuration that is reachable via available evolution processes. The inner parts shrink and the outer parts expand, provided that some physical process transports energy or…

宇宙学与河外天体物理 · 物理学 2013-11-13 John Kormendy

Surveys of the local and distant Universe are the means to test and improve our models of galaxy formation. Substantial successes in the models are evident, while there is also considerable recent progress in identifying what remains to be…

天体物理学 · 物理学 2007-05-23 Gerry Gilmore

Void models provide a possible explanation of the "accelerated expansion" of the Universe without dark energy. To make the conventional void models more realistic, we allow the void, an underdense region around us, to be anisotropic and…

宇宙学与河外天体物理 · 物理学 2009-06-29 Masayuki Tanimoto , Yasusada Nambu , Kazuhiro Iwata

Over the past 10 years abundant evidence has emerged that many (if not all) stars are born with circumstellar disks. Understanding the evolution of post-accretion disks can provide strong constraints on theories of planet formation and…

天体物理学 · 物理学 2007-05-23 M. R. Meyer , D. E. Backman , A. J. Weinberger , M. C. Wyatt

We review internal processes of secular evolution in galaxy disks, concentrating on the buildup of dense central features that look like classical, merger-built bulges but that were made slowly out of disk gas. We call these pseudobulges.…

天体物理学 · 物理学 2009-09-29 John Kormendy , Robert C. Kennicutt

In the present work, evolution of gas-filled pore inside spherical nanoshells is considered. On the supposition that diffusion fluxes are quasistationary, the nonlinear equation system is obtained analytically, that describes completely the…

介观与纳米尺度物理 · 物理学 2018-10-25 V. V. Yanovsky , M. I. Kopp , M. A. Ratner

We report on work done by the Virgo consortium, an international collaboration set up in order to study the formation and evolution of Large Scale Structure using N-body simulations on the latest generation of parallel supercomputers. We…

The universe's large-scale structure forms a vast, interconnected network of filaments, sheets, and voids known as the cosmic web. For decades, astronomers have observed that the orientations of neighboring galaxy clusters within these…

宇宙学与河外天体物理 · 物理学 2025-06-25 Michael J. West , Roberto De Propris , Maret Einasto , Z. L. Wen , J. L. Han

Major astrophysical questions related to the formation and evolution of structures, and more specifically of galaxy groups and clusters, will still be open in the coming decade and beyond: what is the interplay of galaxy, supermassive black…

Pairs of planets in a system may end up close to their host star on eccentric orbits as a consequence of planet planet scattering, Kozai or secular migration. In this scenario, general relativity and secular perturbations have comparable…

地球与行星天体物理 · 物理学 2020-02-12 Francesco Marzari , Makiko Nagasawa

Using the redshift-space distortions of void-galaxy cross-correlation function we analyse the dynamics of voids embedded in different environments. We compute the void-galaxy cross-correlation function in the Sloan Digital Sky Survey (SDSS)…

宇宙学与河外天体物理 · 物理学 2015-06-16 Dante Paz , Marcelo Lares , Laura Ceccarelli , Nelson Padilla , Diego García Lambas

We investigated the evolution of clusters of galaxies using self-consistent N-body simulations. We varied the initial model of galaxies and clusters, and studied the dependence of evolution on initial conditions. We found that the growth…

天体物理学 · 物理学 2016-08-30 T. Sensui , Y. Funato , J. Makino

The amount and nature of the evolution of the X-ray properties of clusters of galaxies provides information on the formation of structure in the universe and on the properties of the universe itself. The cluster luminosity - temperature…

天体物理学 · 物理学 2007-05-23 J. Patrick Henry

The adhesion approximation is a simple analytical model suggested for explanation of the major geometrical features of the observed structure in the galaxy distribution on scales from 1 to (a few)x100/h Mpc. It is based on Burgers' equation…

宇宙学与河外天体物理 · 物理学 2009-12-24 Sergei F. Shandarin

Within the framework of hierarchical clustering we show that a simple Press-Schechter-like approximation, based on spherical dynamics, provides a good estimate of the evolution of the density field in the quasi-linear regime up to $\Sigma…

天体物理学 · 物理学 2007-05-23 P. Valageas

The purpose of this paper is to study the evolution of moving interacting particles on the mesoscopic scale. We will introduce an uncertainty principle and a new priori bound for the evolution of particles subject to a general mesoscopic…

偏微分方程分析 · 数学 2021-03-09 Nima Moini

This is the second of two papers describing a model of galactic evolution in the submillimetre waveband. The model incorporates a self-consistent treatment of the evolution of dust and stars, is normalized to the submillimetre properties of…

天体物理学 · 物理学 2015-06-24 Stephen Eales , Mike Edmunds

An approach to cosmological modelling is presented that incorporates the inhomogeneous structure of the Cosmic Web, specifically focusing on the interplay between cosmic voids and density walls. We extend the standard homogeneous and…

宇宙学与河外天体物理 · 物理学 2025-03-12 John Moffat

The mass-size relation is a fundamental galaxy scaling law closely tied to galaxy formation and evolution. Using added-value products of the Calar Alto Void Integral-field Treasury surveY (CAVITY) and SDSS DR16 images, we examine the effect…