how did the first stars and galaxies form

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The First Galaxies In The Universe

Author : Abraham Loeb
ISBN : 9780691144924
Genre : Science
File Size : 87. 9 MB
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This book provides a comprehensive, self-contained introduction to one of the most exciting frontiers in astrophysics today: the quest to understand how the oldest and most distant galaxies in our universe first formed. Until now, most research on this question has been theoretical, but the next few years will bring about a new generation of large telescopes that promise to supply a flood of data about the infant universe during its first billion years after the big bang. This book bridges the gap between theory and observation. It is an invaluable reference for students and researchers on early galaxies. The First Galaxies in the Universe starts from basic physical principles before moving on to more advanced material. Topics include the gravitational growth of structure, the intergalactic medium, the formation and evolution of the first stars and black holes, feedback and galaxy evolution, reionization, 21-cm cosmology, and more. Provides a comprehensive introduction to this exciting frontier in astrophysics Begins from first principles Covers advanced topics such as the first stars and 21-cm cosmology Prepares students for research using the next generation of large telescopes Discusses many open questions to be explored in the coming decade

How Did The First Stars And Galaxies Form

Author : Abraham Loeb
ISBN : 1400834066
Genre : Science
File Size : 52. 85 MB
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Though astrophysicists have developed a theoretical framework for understanding how the first stars and galaxies formed, only now are we able to begin testing those theories with actual observations of the very distant, early universe. We are entering a new and exciting era of discovery that will advance the frontiers of knowledge, and this book couldn't be more timely. It covers all the basic concepts in cosmology, drawing on insights from an astronomer who has pioneered much of this research over the past two decades. Abraham Loeb starts from first principles, tracing the theoretical foundations of cosmology and carefully explaining the physics behind them. Topics include the gravitational growth of perturbations in an expanding universe, the abundance and properties of dark matter halos and galaxies, reionization, the observational methods used to detect the earliest galaxies and probe the diffuse gas between them--and much more. Cosmology seeks to solve the fundamental mystery of our cosmic origins. This book offers a succinct and accessible primer at a time when breathtaking technological advances promise a wealth of new observational data on the first stars and galaxies. Provides a concise introduction to cosmology Covers all the basic concepts Gives an overview of the gravitational growth of perturbations in an expanding universe Explains the process of reionization Describes the observational methods used to detect the earliest galaxies

Vor Dem Anfang

Author : Martin Rees
ISBN : 9783105608500
Genre : Science
File Size : 42. 37 MB
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Gibt es neben unserem noch andere Universen? Wie und wann sind sie entstanden? Welche physikalischen Gesetze herrschen dort? – Die Grundfragen der Kosmologie, beantwortet von Martin Rees, einem der renommiertesten Astronomen der Welt. (Dieser Text bezieht sich auf eine frühere Ausgabe.)

The First Galaxies

Author : Tommy Wiklind
ISBN : 9783642323621
Genre : Science
File Size : 86. 19 MB
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New observations of the period between the cosmic recombination and the end of reionization are posing intriguing questions about where the first generations of stars were formed, how the first galaxies were assembled, whether these galaxies have low redshift counterparts, and what role the early galaxies played in the reionization process. Combining the new observational data with theoretical models can shed new light on open issues regarding the star formation process, its role in the reionization of the Universe, and the metal enrichment in galaxies at those early epochs. This volume brings together leading experts in the field to discuss our current level of understanding and what may come in the near future as our observational as well as theoretical tools improve. The book confronts the theory of how the first stars, black holes, and galaxies formed with current and planned observations. This synthesis is very timely, just ahead of the establishment of major new facilities, such as the James Webb Space Telescope (JWST), a next-generation, millimeter/sub-millimeter observatory in the Atacama desert (ALMA), and ground-based Extremely Large Telescopes (ELT). Together, they will revolutionize the study of the most distant objects in the Universe. This volume is aimed at beginning graduate students but can also serve as a reference work for active researchers in the field. Apart from presenting the fundamental concepts involved, it also provides an introduction to the methods and techniques used. The book will also be useful to anyone with an astrophysical background who needs an effective starting point for learning about the first stars and galaxies.

Cosmic Dawn

Author : George Rhee
ISBN : 9781461478133
Genre : Science
File Size : 31. 44 MB
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This book takes the reader on an exploration of the structure and evolution of our universe. The basis for our knowledge is the Big Bang theory of the expanding universe. This book then tells the story of our search for the first stars and galaxies using current and planned telescopes. These telescopes are marvels of technology far removed from Galileo's first telescope but continuing astronomy in his ground breaking spirit. We show the reader how these first stars and galaxies shaped the universe we see today. This story is one of the great scientific adventures of all time.

The Dense Interstellar Medium In Galaxies

Author : Susanne Pfalzner
ISBN : 354021254X
Genre : Science
File Size : 51. 92 MB
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First Light In The Universe

Author : Abraham Loeb
ISBN : 9783540741633
Genre : Science
File Size : 54. 87 MB
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The exploration of the first billion years of the history of the Universe represents one of the great challenges of contemporary astrophysics. During this time, the first structures start to form the first stars, galaxies, and possibly also soon the first quasars. At the same time, light comes to the dark, neutral Universe. This book contains the worked out lectures given at the 36th Saas-Fee Advanced Course "First Light in the Universe" by three eminent scientists in the field.

Supernova Driven Evolution Of The First Stars And Galaxies

Author : Jeremy Steven Ritter
ISBN : OCLC:1057475382
Genre :
File Size : 75. 65 MB
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Heavy elements like carbon and oxygen are ubiquitous throughout the observed Universe yet only hydrogen, helium, and a few trace light elements are predicted to have been created in the Big Bang. Massive stars fuse light elements to form heavier elements during their brief lifetimes and die as supernova (SN) explosions that enrich the surrounding gas clouds. The chemical evolution history of a galaxy can be traced back through cosmic time from the highly enriched young stars like the Sun to the ancient, extremely metal-poor stars in the outer halo. This dissertation presents a series of high-resolution cosmological numerical simulations designed to explore the initial stages of SN-driven galactic evolution, from the collapse of the very first stars in unenriched dark matter halos to the formation of hot, enriched outflows in a first galaxy. These 3D hydrodynamical simulations of discrete, expanding SN remnants show that they were capable of enriching their host dark matter mini halos and the surrounding gas sufficiently to satisfy the theoretical minimum threshold required to form new low mass metal-enriched stars. Hydrodynamical biases skew our ability to trace the enrichment of individual stars back to a single progenitor SN, however there is hope that we can characterize the enrichment signature of the first stars from the elemental abundance trends observed in the most ancient, metal-poor stars. Primordial gas enriched by a single progenitor SN, assuming Type II-like yields, can have abundance ratios that fall within the parameter-space for the observed populations of extremely metal-poor stars. Finally, galactic outflows are a common feature found in the outer halos of star-forming galaxies. It has long been theorized that the combined effects of many SNe could be responsible for powering the supersonic velocities observed in these outflows. A pilot simulation is performed to explore the effects of a continuous succession of discrete SNe, exploding one at a time in a small starburst galaxy, the results of which will provide insights into the expected thermodynamic and spectroscopic features we might expect when future missions like the James Webb Space Telescope begin to unlock this era in our cosmic history.

Stars And Galaxies

Author : Michael Seeds
ISBN : 9781111990664
Genre : Science
File Size : 27. 35 MB
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Fascinating, engaging, and extremely visual, Stars and Galaxies Eighth Edition emphasizes the scientific method throughout as it guides students to answer two fundamental questions: What are we? And how do we know? Updated with the newest developments and latest discoveries in the exciting study of astronomy, authors Michael Seeds and Dana Backman discuss the interplay between evidence and hypothesis, while providing not only fact but also a conceptual framework for understanding the logic of science. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

Das Universum F R Eilige

Author : Neil deGrasse Tyson
ISBN : 9783446259539
Genre : Science
File Size : 33. 99 MB
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Der nach Stephen Hawking prominenteste Astrophysiker des Planeten hat das ultimative Kompendium über den Kosmos verfasst. In Neil deGrasse Tysons Bestseller ist alles versammelt, was wir über das Universum wissen: über Exoplaneten und Dunkle Energie, über Zwerggalaxien und den Urknall. Der Autor begeistert wie kein Zweiter mit funkelndem Witz für die Wunder des Weltalls. Zugleich regt er zum Nachdenken über unseren Platz im Universum an und zu Demut angesichts kosmischer Skalen. Sein „Universum für Eilige“ ist das perfekte Buch für alle, die auf nur 200 Seiten die heutige Astrophysik verstehen – und sich dabei auf hohem Niveau unterhalten lassen möchten.

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