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Quasars And Cosmology
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Download or read book Astronomical written by Tim James and published by Simon and Schuster. This book was released on 2021-11-09 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guiding us through Einstein's theory of relativity, quantum mechanics, and string theory, Astronomical explains the baffling mysteries of the cosmos: from alien life to the zodiac; from white holes to wormholes; from quasars to quark stars—all within a narrative that is as entertaining as it is edifying. Does the Big Bang prove the existence of God? What's the Universe expanding into? Is Earth the only planet which supports life? Space is the biggest, oldest, hottest, coldest, strangest thing a human can study. It's no surprise then, that the weirdest facts in science (not to mention the weirdest scientists themselves) are found in astrophysics and cosmology. If you're looking for instructions on how to set up your grandad's telescope this book probably isn't for you. In Astronomical, Tim James takes us on a tour of the known (and unknown) universe, focusing on the most-mind boggling stuff we've come across, as well as unpacking the latest theories about what's really going on out there. Guiding us through Einstein's relativity, quantum mechanics and string theory, Astronomical delves into the baffling corners of the cosmos and tackles the biggest mysteries we face: from alien life to the zodiac; from white holes to wormholes; from quasars to quark stars. This is the science of space at its absolute strangest.
Book Synopsis Galaxies, Quasars, and Cosmology by : Lizhi Fang
Download or read book Galaxies, Quasars, and Cosmology written by Lizhi Fang and published by World Scientific. This book was released on 1985 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises lectures delivered at the First Equatorial School of Relativistic Astrophysics. It covers various topics related to observational and theoretical problems of galaxies, quasars and cosmology. The aim is to analyze current problems.
Book Synopsis Quasar Astronomy by : Daniel W. Weedman
Download or read book Quasar Astronomy written by Daniel W. Weedman and published by Cambridge University Press. This book was released on 1988-04-14 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: A current account of quasar astronomy that not only summarizes existing results from various techniques but refers to the potentialities of new instruments. All aspects of quasar spectroscopy are discussed and techniques for analyzing quasar data are summarized.
Book Synopsis Quasars at All Cosmic Epochs by : Paola Marziani
Download or read book Quasars at All Cosmic Epochs written by Paola Marziani and published by Frontiers Media SA. This book was released on 2018-10-05 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last 50 years have seen a tremendous progress in the research on quasars. From a time when quasars were unforeseen oddities, we have come to a view that considers quasars as active galactic nuclei, with nuclear activity a coming-of-age experienced by most or all galaxies in their evolution. We have passed from a few tens of known quasars of the early 1970s to the 500,000 listed in the catalogue of the Data Release 14 of the Sloan Digital Sky Survey. Not surprisingly, accretion processes on the central black holes in the nuclei of galaxies — the key concept in our understanding of quasars and active nuclei in general — have gained an outstanding status in present-day astrophysics. Accretion produces a rich spectrum of phenomena in all bands of the electromagnetic spectrum. The power output of highly-accreting quasars has impressive effects on their host galaxies. All the improvement in telescope light gathering and in computing power notwithstanding, we still miss a clear connection between observational properties and theory for quasars, as provided, for example, by the H-R diagram for stars. We do not yet have a complete self-consistent view of nuclear activity with predictive power, as we do for main-sequence stellar sources. At the same time quasars offer many “windows open onto the unknown". On small scales, quasar properties depend on phenomena very close to the black hole event horizon. On large scales, quasars may effect evolution of host galaxies and their circum-galactic environments. Quasars’ potential to map the matter density of the Universe and help reconstruct the Universe’s spacetime geometry is still largely unexploited. The times are ripe for a critical assessment of our present knowledge of quasars as accreting black holes and of their evolution across the cosmic time. The foremost aim of this research topic is to review and contextualize the main observational scenarios following an empirical approach, to present and discuss the accretion scenario, and then to analyze how a closer connection between theory and observation can be achieved, identifying those aspects of our understanding that are still on a shaky terrain and are therefore uncertain knowledge. This research topic covers topics ranging from the nearest environment of the black hole, to the environment of the host galaxies of active nuclei, and to the quasars as markers of the large scale structure and of the geometry of spacetime of the Universe. The spatial domains encompass the accretion disk, the emission and absorption regions, circum-nuclear starbursts, the host galaxy and its interaction with other galaxies. Systematic attention is devoted to some key problems that remain outstanding and are clearly not yet solved: the existence of two quasar classes, radio quiet and radio loud, and in general, the systematic contextualization of quasar properties the properties of the central black hole, the dynamics of the accretion flow in the inner parsecs and the origin of the accretion matter, the quasars’ small and large scale environment, the feedback processes produced by the black hole into the host galaxy, quasar evolutionary patterns from seed black holes to the present-day Universe, and the use of quasars as cosmological standard candles. The timing is appropriate as we are now witnessing a growing body of results from major surveys in the optical, UV X, near and far IR, and radio spectral domains. Radio instrumentation has been upgraded to linear detector — a change that resembles the introduction of CCDs for optical astronomy — making it possible to study radio-quiet quasars at radio frequencies. Herschel and ALMA are especially suited to study the circum-nuclear star formation processes. The new generation of 3D magnetohydrodynamical models offers the prospective of a full physical modeling of the whole quasar emitting regions. At the same time, on the forefront of optical astronomy, applications of adaptive optics to long-slit spectroscopy is yielding unprecedented results on high redshift quasars. Other measurement techniques like 2D and photometric reverberation mapping are also yielding an unprecedented amount of data thanks to dedicated experiments and instruments. Thanks to the instrumental advances, ever growing computing power as well as the coming of age of statistical and analysis techniques, the smallest spatial scales are being probed at unprecedented resolution for wide samples of quasars. On large scales, feedback processes are going out of the realm of single-object studies and are entering into the domain of issues involving efficiency and prevalence over a broad range of cosmic epochs. The Research Topic "Quasars at all Cosmic Epochs" collects a large fraction of the contributions presented at a meeting held in Padova, sponsored jointly by the National Institute for Astrophysics, the Padova Astronomical Observatory, the Department of Physics and Astronomy of the University of Padova, and the Instito de Astrofísica de Andalucía (IAA) of the Consejo Superiór de Investigación Cientifica (CSIC). The meeting has been part of the events meant to celebrate the 250th anniversary of the foundation of the Padova Observatory.
Book Synopsis Quasars and Galaxies in a New Cosmology by : Borys Abramenko
Download or read book Quasars and Galaxies in a New Cosmology written by Borys Abramenko and published by . This book was released on 1980 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Understanding the Universe by : Andrew Norton
Download or read book Understanding the Universe written by Andrew Norton and published by CRC Press. This book was released on 2021-05-13 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the Universe: The Physics of the Cosmos from Quasars to Quarks explores how all areas of physics, from the very smallest scales to the very largest, come together to form our current understanding of the Universe. It takes readers on a fascinating journey, from the Big Bang and how the Universe has evolved, to how it appears now, and the possibilities for how it will continue to evolve in the future. It also explores the latest exciting developments in the area and how they impact our understanding of the Universe, such as quantum chromodynamics, black holes, dark energy, and gravitational waves. Equally importantly, it explains how we have come to know all of this about the Universe and details the limitations of our current understanding. This book is accessible to all introductory undergraduate students interested in the physical sciences. It prioritises a non-mathematical approach so it can be understood by all students, with only two algebraic equations in the book and any numerical calculations shown are limited to simple arithmetic. Key Features: Combines current understanding of quantum physics and cosmology, and includes the latest exciting developments from the field. Provides an accessible introduction to the topic, focusing on a non-mathematical presentation. Presents a comprehensive narrative on the subject and a coherent story.
Book Synopsis Cosmological Enigmas by : Mark Kidger
Download or read book Cosmological Enigmas written by Mark Kidger and published by JHU Press. This book was released on 2007-11-11 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Author Mark Kidger weaves together history, science, and science fiction to consider questions about the bigness of space and the strange objects that lie trembling at the edge of infinity. Reflecting on how stars shine and what may lie beyond the edge of the universe, Kidger takes readers on the ultimate cosmic journey.Johns Hopkins University Press
Download or read book Quasars written by Franz Daniel Kahn and published by Manchester University Press. This book was released on 1967 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Black Holes, Quasars & the Universe by : Harry L. Shipman
Download or read book Black Holes, Quasars & the Universe written by Harry L. Shipman and published by . This book was released on 1976 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Galaxies and Cosmology by : Francoise COMBES
Download or read book Galaxies and Cosmology written by Francoise COMBES and published by Springer Science & Business Media. This book was released on 2004-08-11 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unique in its breadth of coverage and level of presentation, this revised textbook provides more on the nature of galaxies, extragalactic objects, the large-scale structure of the Universe, and cosmology than is available in general textbooks on astronomy. It remains, however, accessible to advanced undergraduate students. One or more chapters are devoted to each of the following: the classification and morphology of galaxies; the galactic interstellar medium; galactic kinematics; elliptical, spiral, and barred spiral galaxies; the interactions between galaxies; extragalactic radio sources, quasars and their line spectra, and other active galactic nuclei; the formation of galaxies; the Universe as a whole; and cosmology.
Book Synopsis Beyond the Milky Way by : Thornton Page
Download or read book Beyond the Milky Way written by Thornton Page and published by . This book was released on 1969 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthology of authoritative articles chronicling recent developments, techniques, and research enabling man to observe features of the universe as far as 8 billion light years away.
Book Synopsis Quasars, Redshifts and Controversies by : Halton C. Arp
Download or read book Quasars, Redshifts and Controversies written by Halton C. Arp and published by Cambridge University Press. This book was released on 1988-09-29 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contests the 'establishment' view of quasars as the most distant objects in the universe.
Download or read book The Universe written by Isaac Asimov and published by . This book was released on 1977 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis From Quarks to Quasars by : James Jespersen
Download or read book From Quarks to Quasars written by James Jespersen and published by Atheneum Books. This book was released on 1987 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the theories advanced over the past several hundred years explaining the nature of the universe.
Book Synopsis What Are Quasars? by : Larry Slawson
Download or read book What Are Quasars? written by Larry Slawson and published by Larry Slawson via PublishDrive. This book was released on 2019-05-10 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook explores the deep-space objects commonly known as "quasars," and provides its readers with a fundamental understanding for both their origins and purpose in the universe at large.
Book Synopsis Quasars and Cosmology by : G. J. Ferland
Download or read book Quasars and Cosmology written by G. J. Ferland and published by . This book was released on 1999 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Understanding the Epoch of Cosmic Reionization by : Andrei Mesinger
Download or read book Understanding the Epoch of Cosmic Reionization written by Andrei Mesinger and published by Springer. This book was released on 2015-11-28 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dawn of the first stars, galaxies and black holes signaled a fundamental milestone in our Universe’s evolution: the Epoch of Reionization. The light from these galactic ancestors began spreading out, ionizing virtually every atom in existence. Our Universe transitioned from darkness to light, from cold to hot, from simple and boring to the wondrous cosmic zoo we see around us today. Despite its importance, observations of reionization have been few, and their interpretation has been highly controversial. Fortunately, this is rapidly changing. We will soon enter the "Big Data” era of this mysterious epoch, driven by an upcoming wave of observations with state-of-the-art telescopes as well as new sophisticated analysis tools. The aim of this volume is to summarize the current status and future outlook of the reionization field. We bring together leading experts in many sub-disciplines, highlighting the measurements that will illuminate our understanding of reionization and the cosmic dawn: (i) 21cm interferometry; (ii) high-redshift quasar spectra; (iii) high-redshift galaxy surveys; (iv) primary and secondary anisotropies of the Cosmic Microwave Background; (v) high-resolution studies of the metal content of early galaxies. We seek a roadmap to interpreting the wealth of upcoming observations. What is the best use of limited observational resources? How do we develop theoretical tools tailored for each observation? Ultimately, what will we learn about the epoch of reionization and our galactic ancestors?