Cosmic Paradoxes (Third Edition)
Cosmic Paradoxes (Third Edition)

Author: Julio A Gonzalo

Publisher: World Scientific

Published: 2022-08-18

Total Pages: 249

ISBN-13: 981126208X

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'Cosmic Paradoxes' was an outcome of a Conference-Summer Course on 'Astrophysical Cosmology: Frontier Questions' held at El Escorial, Madrid, on August 16-19, 1993. The Scientific Directors were John C Mather, Director of NASA's COBE (Cosmic Background Radiation Explorer), and Jose M Torroja, Secretary of the Spanish Academy of Sciences. Julio A Gonzalo, UAM, was in charge of coordinating the event. The first speaker was Ralph A Alpher, one of the pioneers who predicted very early the CBR (Cosmic Background Radiation). The CBR was observed by A Penzias and R Wilson, Bell Telephone Labs, in 1965. Thereafter it was measured with unprecedented precision by the COBE in 1989, characterizing the Planck spectral distribution of the CBR (J C Mather) and detecting its minute anisotropies (G Smoot). In 2003 the WMAP, NASA's satellite successor of the COBE, confirmed COBE's results, and gave an excellent quantitative estimate of the 'age' of the universe as 13.7 ± 0.2 Gyrs, in support of the Big Bang theory of cosmic origins.In the Third Edition of this book, almost coincident with the launch reports of NASA's James Webb Space Telescope (JWST), includes recent work discussing evidence in favor of an open finite universe. A further discussion of the Heisenberg-Lemaitre time (Appendix D) takes into consideration that the cosmic expansion velocity at very early times is Ṙ(yHL)≫c and reviews in more detail the thermal history of the universe.

Cosmic Paradoxes (Second Edition)
Cosmic Paradoxes (Second Edition)

Author: Julio A Gonzalo

Publisher: World Scientific Publishing Company

Published: 2017-02-16

Total Pages: 207

ISBN-13: 9813141581

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Beginning with the famous Olber's paradox, paradoxes such as the missing mass, dark energy, baryon to photon ratio and cosmic zero-point energy are examined in detail. The Heisenberg-Lemaitre's units, based on the total enormous but finite mass of the Universe, are introduced and rigorous solutions of Einstein's cosmological equations for an open Universe with cosmological constant are obtained. Energy conservation after the Big Bang is consistently required.This book discusses such paradoxes in depth with physical and logical content and historical perspective, and has not too technical content in order to serve a wide audience. In the second edition, the content is updated and new sections are added.

Introduction to Cosmology
Introduction to Cosmology

Author: Matts Roos

Publisher: John Wiley & Sons

Published: 2015-03-09

Total Pages: 300

ISBN-13: 1118923294

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The Fourth Edition of Introduction to Cosmology provides a concise, authoritative study of cosmology at an introductory level. Starting from elementary principles and the early history of cosmology, the text carefully guides the student on to curved spacetimes, special and general relativity, gravitational lensing, the thermal history of the Universe, and cosmological models, including extended gravity models, black holes and Hawking's recent conjectures on the not-so-black holes. Introduction to Cosmology, Fourth Edition includes: New theoretical approaches and in-depth material on observational astrophysics and expanded sections on astrophysical phenomena Illustrations throughout and comprehensive references with problems at the end of each chapter and a rich index at the end of the book Latest observational results from WMAP9, ACT, and Planck, and all cosmological parameters have been brought up to date. This text is invaluable for undergraduate students in physics and astrophysics taking a first course in cosmology. Extensively revised, this latest edition extends the chapter on cosmic inflation to the recent schism on eternal inflation and multiverses. Dark matter is discussed on galaxy and cluster scales, and dark matter candidates are presented, some requiring a five-dimensional universe and several representing various types of exotica. In the context of cosmic structures the cold dark matter paradigm is described. Dark energy models include the cosmological constant, quintessence and other single field models, f(R) models and models requiring extra dimensions.

COSMIC FORCE COSMOLOGY
COSMIC FORCE COSMOLOGY

Author: SOLATLE LU

Publisher: American Academic Press

Published: 2023-06-01

Total Pages: 421

ISBN-13: 1631814281

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LIGHT, the primordial, eternal, pure, almighty energy, is the brightest as well as darkest riddle that has been puzzling to all earthlings for millennia. Whoever truly knows light has already cracked the greatest mystery of the cosmos. Surprisingly! This riddle has been actually cracked independently by three thinkers of different ages. Heraclitus, the Hellenic thinker 2500 years ago, is the first cracker of the riddle with his doctrines that things are constantly changing (universal flux), that opposites coincide, and that fire is the source and nature of all things—We just decode his Fire into LIGHT. 2400 years later, there comes the second cracker Nikola Tesla, the modern Heraclitus, who, in 1899, explicitly declares that Everything is LIGHT. Matter is created from the original and eternal energy that we know as LIGHT. Solatle Lu is the third cracker, the first narrator of the riddle. He explicitly declares, in 2019 in his An Outline of Force Cosmology, that All particles are derived from photons and live forever, substantially honors LIGHT as the Creator of all things, hence elevates the common idea of the three to the Highest Knowledge of 21st century, the Primary Cause, the First Principle. This event marks a great leap in the continuous rational movement of mankind, a new start.

Paradox
Paradox

Author: Jim Al-Khalili

Publisher: Crown

Published: 2012-10-23

Total Pages: 258

ISBN-13: 0307986799

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A fun and fascinating look at great scientific paradoxes. Throughout history, scientists have come up with theories and ideas that just don't seem to make sense. These we call paradoxes. The paradoxes Al-Khalili offers are drawn chiefly from physics and astronomy and represent those that have stumped some of the finest minds. For example, how can a cat be both dead and alive at the same time? Why will Achilles never beat a tortoise in a race, no matter how fast he runs? And how can a person be ten years older than his twin? With elegant explanations that bring the reader inside the mind of those who've developed them, Al-Khalili helps us to see that, in fact, paradoxes can be solved if seen from the right angle. Just as surely as Al-Khalili narrates the enduring fascination of these classic paradoxes, he reveals their underlying logic. In doing so, he brings to life a select group of the most exciting concepts in human knowledge. Paradox is mind-expanding fun.

Black Holes, Cosmology And Extra Dimensions (Second Edition)
Black Holes, Cosmology And Extra Dimensions (Second Edition)

Author: Kirill A Bronnikov

Publisher: World Scientific

Published: 2021-06-29

Total Pages: 591

ISBN-13: 9811233462

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Assuming basic knowledge of special and general relativity, this book guides the reader to problems under consideration in modern research, concerning black holes, wormholes, cosmology, and extra dimensions. Its first part is devoted to local strong field configurations (black holes and wormholes) in general relativity and its most relevant extensions: scalar-tensor, f(R), and multidimensional theories. The second part discusses cosmology, including inflation and problems of a unified description of the whole evolution of the universe. The third part concerns multidimensional theories of gravity and contains a number of original results obtained by the authors. Expository work is conducted for a mechanism of symmetries and fundamental constants formation. The original approach to nonlinear multidimensional gravity that is able to construct a unique perspective describing different phenomena is highlighted.Much of the content was previously presented only in journal publications and is new for book contents, e.g., on regular black holes, various scalar field solutions, wormholes and their stability, inflation, clusters of primordial black holes, and multidimensional gravity. The last two topics are added in this new edition of the book. The other chapters are also updated to include new discoveries like the detection of gravitational waves.