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Large-Scale Structure of the Universe

Large-Scale Structure of the Universe
Author: Kana Moriwaki
Publisher: Springer Nature
Total Pages: 126
Release: 2022-11-01
Genre: Science
ISBN: 9811958807

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Line intensity mapping (LIM) is an observational technique that probes the large-scale structure of the Universe by collecting light from a wide field of the sky. This book demonstrates a novel analysis method for LIM using machine learning (ML) technologies. The author develops a conditional generative adversarial network that separates designated emission signals from sources at different epochs. It thus provides, for the first time, an efficient way to extract signals from LIM data with foreground noise. The method is complementary to conventional statistical methods such as cross-correlation analysis. When applied to three-dimensional LIM data with wavelength information, high reproducibility is achieved under realistic conditions. The book further investigates how the trained machine extracts the signals, and discusses the limitation of the ML methods. Lastly an application of the LIM data to a study of cosmic reionization is presented. This book benefits students and researchers who are interested in using machine learning to multi-dimensional data not only in astronomy but also in general applications.


Large Scale Structure Formation

Large Scale Structure Formation
Author: Reza Mansouri
Publisher: Springer Science & Business Media
Total Pages: 385
Release: 2012-12-06
Genre: Science
ISBN: 9401141754

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The modern Persian word for cosmology is "Keyhan-shenakht", which is also the title of a Persian book written more than 800 years ago. The same term can also be found in Old Persian. In spite of this old tradition, modern cosmology is a new~omer within the scientific disciplines in Iran. The cosmology community' is small and not yet well established. Given the spectacular recent advances in observational and theoretical cosmology, the large amount of new observational data which will become available in the near future, and the rapid expansion of the international cosmology community, it was realized that Iran should play a more active role in the exciting human endeavour which cosmology constitutes. This was the main motivation to establish a School on Cosmology in Iran. The plan is to hold a cosmology school every three years somewhere in Iran. The focus of this First School on Cosmology was chosen to be structure formation, a rapidly evolving cornerstone of modern cosmology. The topics of the school were selected in order to give both a broad overview of the current status of cosmological structure formation, and an in-depth dis cussion of the key issues theory of cosmological perturbations and analysis of cosmic microwave anisotropies. The lectures by Blanchard and Sarkar give an overview of homogeneous cosmological models and standard big bang cosmology. In his contribution, Padmanabhan presents a comprehen sive discussion of the growth of cosmological perturbations.


Simulating Large-scale Structure for Models of Cosmic Acceleration

Simulating Large-scale Structure for Models of Cosmic Acceleration
Author: Baojiu Li
Publisher:
Total Pages: 0
Release: 2018
Genre: Cosmology
ISBN: 9780750315869

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"Simulating Large Scale Structure for Models of Cosmic Acceleration explores alternative cosmological models and how we can learn from these as well as differentiate them from the standard cosmic model. The book also looks at the ways in which techniques can be used to accurately develop and test the model to produce new observations. This self-contained book provides a fundamental guide to researchers looking to enter the field of cosmological simulations. Postgraduate students will also find it of use as the need for numerical simulations and astronomical surveys increases. The book contains a significant amount of Professor Li's own research as well as assistance from other experts and collaborators in the field and will certainly encourage others to explore the ever-expanding world of cosmic acceleration."--Source : résumé de l'éditeur.


Large Scale Structure In The Universe - Proceedings Of The International Workshop

Large Scale Structure In The Universe - Proceedings Of The International Workshop
Author: Jan P Mucket
Publisher: World Scientific
Total Pages: 394
Release: 1995-10-31
Genre:
ISBN: 9814548936

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This volume documents the theoretical and observational results and arguments in favour of (or against) the most preferred models of structure formation. New observational results of the large scale distribution of matter are confronted with recent theories on the origin and evolution of structure in the universe.


A Pan-Chromatic View of Clusters of Galaxies and the Large-Scale Structure

A Pan-Chromatic View of Clusters of Galaxies and the Large-Scale Structure
Author: Manolis Plionis
Publisher: Springer Science & Business Media
Total Pages: 476
Release: 2008-02-29
Genre: Science
ISBN: 1402069405

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The reviews presented in this volume cover a huge range of cluster of galaxies topics. Readers will find the book essential reading on subjects such as the physics of the ICM gas, the internal cluster dynamics, and the detection of clusters using different observational techniques. The expert chapter authors also cover the huge advances being made in analytical or numerical modeling of clusters, weak and strong lensing effects, and the large scale structure as traced by clusters.


Modern Cosmology

Modern Cosmology
Author: Scott Dodelson
Publisher: Academic Press
Total Pages: 512
Release: 2020-04-18
Genre: Science
ISBN: 0128159499

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Modern Cosmology, Second Edition, provides a detailed introduction to the field of cosmology. Beginning with the smooth, homogeneous universe described by a Friedmann-Lemaître-Robertson-Walker metric, this trusted resource includes careful treatments of dark energy, big bang nucleosynthesis, recombination, and dark matter. The reader is then introduced to perturbations about an FLRW universe: their evolution with the Einstein-Boltzmann equations, their primordial generation by inflation, and their observational consequences: the acoustic peaks in the CMB; the E/B decomposition in polarization; gravitational lensing of the CMB and large-scale structure; and the BAO standard ruler and redshift-space distortions in galaxy clustering. The Second Edition now also covers nonlinear structure formation including perturbation theory and simulations. The book concludes with a substantially updated chapter on data analysis. Modern Cosmology, Second Edition, shows how modern observations are rapidly revolutionizing our picture of the universe, and supplies readers with all the tools needed to work in cosmology. Offers a unique and practical approach for learning how to perform cosmological calculations. New material on theory, simulations, and analysis of nonlinear structure. Substantial updates on new developments in cosmology since the previous edition.