The Shadow Of Black Holes

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The Shadow of Black Holes

Arne Grenzebach
The Shadow of Black Holes Book PDF

Author : Arne Grenzebach
Publisher : Springer
Page : 94 pages
File Size : 45,6 Mb
Release : 2016-05-07
Category : Science
ISBN : 9783319300665

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The Shadow of Black Holes by Arne Grenzebach Pdf

This book introduces an analytic method to describe the shadow of black holes. As an introduction, it presents a survey of the attempts to observe the shadow of galactic black holes. Based on a detailed discussion of the Plebański–Demiański class of space-times, the book derives analytical formulas for the photon regions and for the boundary curve of the shadow as seen by an observer in the domain of outer communication. It also analyzes how the shadow depends on the motion of the observer. For all cases, the photon regions and shadows are visualized for various values of the parameters. Finally, it considers how the analytical formulas can be used for calculating the horizontal and vertical angular diameters of the shadow, and estimates values for the black holes at the centers of our Galaxy near Sgr A* and of the neighboring galaxy M87.

Einstein's Shadow

Seth Fletcher
Einstein s Shadow Book PDF

Author : Seth Fletcher
Publisher : HarperCollins
Page : 309 pages
File Size : 50,6 Mb
Release : 2018-10-09
Category : Science
ISBN : 9780062312037

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Einstein's Shadow by Seth Fletcher Pdf

Einstein’s Shadow follows a team of elite scientists on their historic mission to take the first picture of a black hole, putting Einstein’s theory of relativity to its ultimate test and helping to answer our deepest questions about space, time, the origins of the universe, and the nature of reality Photographing a black hole sounds impossible, a contradiction in terms. But Shep Doeleman and a global coalition of scientists are on the cusp of doing just that. With exclusive access to the team, journalist Seth Fletcher spent five years following Shep and an extraordinary cast of characters as they assembled the Event Horizon Telescope, a worldwide network of radio telescopes created to study black holes. He witnessed the team’s struggles, setbacks, and breakthroughs, and, along the way, Fletcher explored the latest thinking on the most profound questions about black holes: Do they represent a limit to our ability to understand reality? Or will they reveal the clues that lead to the long-sought theory of everything? Fletcher transforms astrophysics into something exciting, accessible, and immediate, taking us on an incredible adventure to better understand the complexity of our galaxy, the boundaries of human perception and knowledge, and how the messy endeavor of science really works. Weaving a compelling narrative account of human ingenuity with excursions into cutting-edge science, Einstein’s Shadow is a tale of great minds on a mission to change the way we understand our universe—and our place in it.

The Shadow of the Black Hole

John W. Moffat
The Shadow of the Black Hole Book PDF

Author : John W. Moffat
Publisher : Oxford University Press, USA
Page : 233 pages
File Size : 50,5 Mb
Release : 2020
Category : Science
ISBN : 9780190650728

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The Shadow of the Black Hole by John W. Moffat Pdf

"Black holes are one of the extraordinary phenomena in the universe whose existence was surmised not by observations, but by theory. The black hole is a prediction of Einstein's 1915-1916 gravitational theory, general relativity, which replaced Sir Isaac Newton's gravity theory, published in his famous treatise Principia in 1687. In 1784, Reverend John Michell, a fellow of Queens' College and Professor of Geology at Cambridge University, had already envisioned what we now call black holes. He asked what would happen if a star's gravity were so strong that its escape velocity - the speed at which a rocket, for example, would have to travel to leave the star - exceeded the speed of light? Michell realized that any light emanating from the star would have to fall back to its surface. He speculated that the escape velocity would exceed the speed of light for a very massive star, making the star invisible to an observer"--

The Shadow of the Black Hole

John W. Moffat
The Shadow of the Black Hole Book PDF

Author : John W. Moffat
Publisher : Oxford University Press
Page : 304 pages
File Size : 41,5 Mb
Release : 2020-06-16
Category : Science
ISBN : 9780190650735

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The Shadow of the Black Hole by John W. Moffat Pdf

Black holes entered the world of science fiction and films in the 1960s, and their popularity in our culture remains today. The buzz surrounding black holes was and is due, in large part, to their speculative nature. It is still difficult for the general public to determine fact versus fiction as it pertains to this terrifying idea: something big enough to swallow anything and everything in close proximity, with a gravitational force so strong that nothing, including light, can escape. In the fall of 2015, scientists at the Laser Interferometry Gravitational-Wave Observatory (LIGO) detected the first sounds from black holes, brought to earth by the gravitational waves that emitted from the merging of two black holes 1.4 billion light years away in space. This confirmed the existence of gravitational waves, which Albert Einstein predicted in 1916. In the spring of 2017, physicists and astronomers who were working on the Event Horizon Telescope (EHT) project captured the first image of a black hole. This was the supermassive black hole hosted by the galaxy M87 in the constellation Virgo, 53 million light years away, and the image shows the shadow the black hole casts upon the bright light surrounding it. In this book, John Moffat shares the history of black holes and presents the latest research into these mysterious celestial objects, including the astounding results from gravitational wave detection and the shadow of the black hole.

The Shadow of the Black Hole

John W. Moffat
The Shadow of the Black Hole Book PDF

Author : John W. Moffat
Publisher : Oxford University Press
Page : 304 pages
File Size : 42,8 Mb
Release : 2020-06-16
Category : Science
ISBN : 9780190650742

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The Shadow of the Black Hole by John W. Moffat Pdf

Black holes entered the world of science fiction and films in the 1960s, and their popularity in our culture remains today. The buzz surrounding black holes was and is due, in large part, to their speculative nature. It is still difficult for the general public to determine fact versus fiction as it pertains to this terrifying idea: something big enough to swallow anything and everything in close proximity, with a gravitational force so strong that nothing, including light, can escape. In the fall of 2015, scientists at the Laser Interferometry Gravitational-Wave Observatory (LIGO) detected the first sounds from black holes, brought to earth by the gravitational waves that emitted from the merging of two black holes 1.4 billion light years away in space. This confirmed the existence of gravitational waves, which Albert Einstein predicted in 1916. In the spring of 2017, physicists and astronomers who were working on the Event Horizon Telescope (EHT) project captured the first image of a black hole. This was the supermassive black hole hosted by the galaxy M87 in the constellation Virgo, 53 million light years away, and the image shows the shadow the black hole casts upon the bright light surrounding it. In this book, John Moffat shares the history of black holes and presents the latest research into these mysterious celestial objects, including the astounding results from gravitational wave detection and the shadow of the black hole.

Einstein's Shadow

Seth Fletcher
Einstein s Shadow Book PDF

Author : Seth Fletcher
Publisher : Ecco
Page : 288 pages
File Size : 44,6 Mb
Release : 2019-10-15
Category : Science
ISBN : 0062312049

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Einstein's Shadow by Seth Fletcher Pdf

A NEW YORK TIMES EDITOR'S CHOICE Einstein’s Shadow follows a team of elite scientists on their historic mission to take the first picture of a black hole, putting Einstein’s theory of relativity to its ultimate test and helping to answer our deepest questions about space, time, the origins of the universe, and the nature of reality Photographing a black hole sounds impossible, a contradiction in terms. But Shep Doeleman and a global coalition of scientists are on the cusp of doing just that. With exclusive access to the team, journalist Seth Fletcher spent five years following Shep and an extraordinary cast of characters as they assembled the Event Horizon Telescope, a virtual radio observatory the size of the Earth. He witnessed their struggles, setbacks, and breakthroughs, and along the way, he explored the latest thinking on the most profound questions about black holes. Do they represent a limit to our ability to understand reality? Or will they reveal the clues that lead to the long-sought Theory of Everything? Fletcher transforms astrophysics into something exciting, accessible, and immediate, taking us on an incredible adventure to better understand the complexity of our galaxy, the boundaries of human perception and knowledge, and how the messy human endeavor of science really works. Weaving a compelling narrative account of human ingenuity with excursions into cutting-edge science, Einstein’s Shadow is a tale of great minds on a mission to change the way we understand our universe—and our place in it.

Black Hole Chasers

Anna Crowley Redding
Black Hole Chasers Book PDF

Author : Anna Crowley Redding
Publisher : Feiwel & Friends
Page : 176 pages
File Size : 47,5 Mb
Release : 2021-10-05
Category : Juvenile Nonfiction
ISBN : 9781250622334

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Black Hole Chasers by Anna Crowley Redding Pdf

In Black Hole Chasers, award-winning investigative journalist Anna Crowley Redding presents the riveting true story of one of the most inspiring scientific breakthroughs of our lifetime—the Event Horizon Telescope team's reveal of the first image of a super massive black hole. In April 2019, the Event Horizon Telescope Team unveiled the first ever image of a super massive black hole. This inspiring scientific breakthrough took years of hard work, innovative thinking, and a level of global cooperation never seen before. The challenge was immense. The goal was impossible. They would need a telescope as big as the earth itself. The technology simply didn’t exist. And yet, a multi-national team of scientists was able to show the world an image of something previously unseeable. Based off extensive research and hours interviews with many of the team's ground-breaking scientist, physicists, and mathematicians, Black Hole Chasers is a story of unique technological innovation and scientific breakthroughs, but more importantly, it's a story of human curiosity and triumph.

Introduction to Black Hole Astrophysics

Gustavo E. Romero,Gabriela S. Vila
Introduction to Black Hole Astrophysics Book PDF

Author : Gustavo E. Romero,Gabriela S. Vila
Publisher : Springer
Page : 318 pages
File Size : 54,8 Mb
Release : 2013-09-14
Category : Science
ISBN : 9783642395963

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Introduction to Black Hole Astrophysics by Gustavo E. Romero,Gabriela S. Vila Pdf

This book is based on the lecture notes of a one-semester course on black hole astrophysics given by the author and is aimed at advanced undergraduate and graduate students with an interest in astrophysics. The material included goes beyond that found in classic textbooks and presents details on astrophysical manifestations of black holes. In particular, jet physics and detailed accounts of objects like microquasars, active galactic nuclei, gamma-ray bursts, and ultra-luminous X-ray sources are covered, as well as advanced topics like black holes in alternative theories of gravity. The author avoids unnecessary technicalities and to some degree the book is self-contained. The reader will find some basic general relativity tools in Chapter 1. The appendices provide some additional mathematical details that will be useful for further study, and a guide to the bibliography on the subject.

Gravitational Radiation and Gravitational Collapse

Cecile Dewitt-Morette (ed)
Gravitational Radiation and Gravitational Collapse Book PDF

Author : Cecile Dewitt-Morette (ed)
Publisher : Springer Science & Business Media
Page : 244 pages
File Size : 49,6 Mb
Release : 1974-05-31
Category : Science
ISBN : 9027704368

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Gravitational Radiation and Gravitational Collapse by Cecile Dewitt-Morette (ed) Pdf

Proceedings of IAU Symposium No. 64, Warsaw, Poland, September 5-8, 1973

Black Hole Survival Guide

Janna Levin
Black Hole Survival Guide Book PDF

Author : Janna Levin
Publisher : Anchor
Page : 161 pages
File Size : 48,5 Mb
Release : 2022-03-15
Category : Science
ISBN : 9781984899798

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Black Hole Survival Guide by Janna Levin Pdf

From the acclaimed author of Black Hole Blues and Other Songs from Outer Space—an authoritative and accessible guide to the most alluring and challenging phenomena of contemporary science. "[Levin will] take you on a safe black hole trip, an exciting travel story enjoyed from your chair’s event horizon.” —Boston Globe Through her writing, astrophysicist Janna Levin has focused on making the science she studies not just comprehensible but also, and perhaps more important, intriguing to the nonscientist. In this book, she helps us to understand and find delight in the black hole—perhaps the most opaque theoretical construct ever imagined by physicists—illustrated with original artwork by American painter and photographer Lia Halloran. Levin takes us on an evocative exploration of black holes, provoking us to imagine the visceral experience of a black hole encounter. She reveals the influence of black holes as they populate the universe, sculpt galaxies, and even infuse the whole expanse of reality that we inhabit. Lively, engaging, and utterly unique, Black Hole Survival Guide is not just informative—it is, as well, a wonderful read from first to last.

Regular Black Holes

Cosimo Bambi
Regular Black Holes Book PDF

Author : Cosimo Bambi
Publisher : Springer Nature
Page : 505 pages
File Size : 53,8 Mb
Release : 2023-07-06
Category : Science
ISBN : 9789819915965

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Regular Black Holes by Cosimo Bambi Pdf

Black holes are one of the most fascinating predictions of general relativity. They are the natural product of the complete gravitational collapse of matter and today we have a body of observational evidence supporting the existence of black holes in the Universe. However, general relativity predicts that at the center of black holes there are spacetime singularities, where predictability is lost and standard physics breaks down. It is widely believed that spacetime singularities are a symptom of the limitations of general relativity and must be solved within a theory of quantum gravity. Since we do not have yet any mature and reliable candidate for a quantum gravity theory, researchers have studied toy-models of singularity-free black holes and of singularity-free gravitational collapses in order to explore possible implications of the yet unknown theory of quantum gravity. This book reviews all main models of regular black holes and non-singular gravitational collapses proposed in the literature, and discuss the theoretical and observational implications of these scenarios.

Black Holes in Higher Dimensions

Gary T. Horowitz
Black Holes in Higher Dimensions Book PDF

Author : Gary T. Horowitz
Publisher : Cambridge University Press
Page : 437 pages
File Size : 50,9 Mb
Release : 2012-04-19
Category : Science
ISBN : 9781107013452

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Black Holes in Higher Dimensions by Gary T. Horowitz Pdf

The first book devoted to black holes in more than four dimensions, for graduate students and researchers.

Death by Black Hole: And Other Cosmic Quandaries

Neil deGrasse Tyson
Death by Black Hole And Other Cosmic Quandaries Book PDF

Author : Neil deGrasse Tyson
Publisher : W. W. Norton & Company
Page : 384 pages
File Size : 45,5 Mb
Release : 2007-11-17
Category : Science
ISBN : 9780393113785

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Death by Black Hole: And Other Cosmic Quandaries by Neil deGrasse Tyson Pdf

"[Tyson] tackles a great range of subjects…with great humor, humility, and—most important—humanity." —Entertainment Weekly Loyal readers of the monthly "Universe" essays in Natural History magazine have long recognized Neil deGrasse Tyson's talent for guiding them through the mysteries of the cosmos with clarity and enthusiasm. Bringing together more than forty of Tyson's favorite essays, Death by Black Hole explores a myriad of cosmic topics, from what it would be like to be inside a black hole to the movie industry's feeble efforts to get its night skies right. One of America's best-known astrophysicists, Tyson is a natural teacher who simplifies the complexities of astrophysics while sharing his infectious fascination for our universe.

Introduction to Black Hole Physics

Valeri P. Frolov,Andrei Zelnikov
Introduction to Black Hole Physics Book PDF

Author : Valeri P. Frolov,Andrei Zelnikov
Publisher : Oxford University Press
Page : 505 pages
File Size : 47,7 Mb
Release : 2011-09-22
Category : Science
ISBN : 9780199692293

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Introduction to Black Hole Physics by Valeri P. Frolov,Andrei Zelnikov Pdf

What is a black hole? How many of them are in our Universe? Can black holes be created in a laboratory or in particle colliders? Can objects similar to black holes be used for space and time travel? This book discusses these and many other questions providing the reader with the tools required to explore the Black Hole Land independently.

Black Holes: A Laboratory for Testing Strong Gravity

Cosimo Bambi
Black Holes A Laboratory for Testing Strong Gravity Book PDF

Author : Cosimo Bambi
Publisher : Springer
Page : 340 pages
File Size : 47,6 Mb
Release : 2017-06-01
Category : Science
ISBN : 9789811045240

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Black Holes: A Laboratory for Testing Strong Gravity by Cosimo Bambi Pdf

This textbook introduces the current astrophysical observations of black holes, and discusses the leading techniques to study the strong gravity region around these objects with electromagnetic radiation. More importantly, it provides the basic tools for writing an astrophysical code and testing the Kerr paradigm. Astrophysical black holes are an ideal laboratory for testing strong gravity. According to general relativity, the spacetime geometry around these objects should be well described by the Kerr solution. The electromagnetic radiation emitted by the gas in the inner part of the accretion disk can probe the metric of the strong gravity region and test the Kerr black hole hypothesis. With exercises and examples in each chapter, as well as calculations and analytical details in the appendix, the book is especially useful to the beginners or graduate students who are familiar with general relativity while they do not have any background in astronomy or astrophysics.“/p>