Astrofysik

This book presents the first comprehensive exploration of the state of this well studied and thus unsolved mystery of the value of the Hubble constant. Chapters covering data, systematics, independent methodologies, and theoretical explanations are authored by distinguished subject-matter experts. Tailored for scientists in the field or adjacent fields, this book provides a resource of insights and also an in-depth background sufficient for motivating future study. Key Features: Introduction: Written by the Nobel Laureate Adam Riess. Measurement Techniques: Gain a profound understanding of the leading Hubble constant measurement techniques, from parallax and masers to supernovae and cosmic chronometers, dissected by leading authorities on each. Systematic Errors: A deep dive into the complexities of data. Experts scrutinize potential sources of systematics that may contribute to the observed disagreements, offering a nuanced view of the challenges in Hubble constant determinations. Theoretical Explanations and Progress: A review of the theoretical explanations, some that are still standing, and some that have been ruled out; all of which have led to scientific progress toward the truth. A Comprehensive Take: This book covers every key and influential aspect to the dilemma of the Hubble tension to date and has gathered world-leading voices on each respective topic.

En este libro se presentan los siguientes temas:conceptos básicos de los agujeros negros: colapso gravitacional, horizonte de eventos, geodésicasMétricas de Schwarzschild, Reissner-Nordstrom y Kerr-NewmanAgujeros negros esféricamente simétricos, giratorios y cargados eléctricamenteDiagramas de Carter-Penrose, singularidades desnudas y coordenadas de Kruskalmecanica de agujeros negrostermodinámica de agujeros negros y radiación de Hawkingagujeros negros cuánticos

En este libro se presentan los siguientes temas:descripción del sistema solarclasificacion y evolucion de las estrellasprocesos nucleares interestelaresLas galaxias y su evolución desde una perspectiva cosmogónica.cuásares, novas, supernovas, nebulosas, estrellas binarias y de neutronesmediciones astronómicas e instrumentos de medición

Les sujets suivants sont présentés dans ce livre :bases des trous noirs : effondrement gravitationnel, horizon des événements, géodésiquesMétriques de Schwarzschild, Reissner-Nordstrom et Kerr-Newmantrous noirs à symétrie sphérique, rotatifs et chargés électriquementDiagrammes de Carter-Penrose, singularités nues et coordonnées de Kruskalmécanique des trous noirsthermodynamique des trous noirs et rayonnement de Hawkingtrous noirs quantiques

Les sujets suivants sont présentés dans ce livre :description du système solaireclassification et évolution des étoilesprocessus nucléaires interstellairesles galaxies et leur évolution d'un point de vue cosmogoniquequasars, novae, supernovae, nébuleuses, étoiles binaires et à neutronsmesures astronomiques et instruments de mesure

In A Brief History of Black Holes, award-winning University of Oxford researcher Dr Becky Smethurst charts five hundred years of scientific breakthroughs in astronomy and astrophysics.Right now, you are orbiting a black hole.The Earth orbits the Sun, and the Sun orbits the centre of the Milky Way: a supermassive black hole, the strangest and most misunderstood phenomenon in the galaxy.In this cosmic tale of discovery, Dr Becky Smethurst takes us from the earliest observations of the universe and the collapse of massive stars, to the iconic first photographs of a black hole and her own published findings.A cosmic tale of discovery, Becky explains why black holes aren't really 'black', that you never ever want to be 'spaghettified', how black holes are more like sofa cushions than hoovers and why, beyond the event horizon, the future is a direction in space rather than in time. Told with humour and wisdom, this captivating book describes the secrets behind the most profound questions about our universe, all hidden inside black holes.'A jaunt through space history . . . with charming wit and many pop-culture references' - BBC Sky At Night Magazine

In this approachable and fascinating biography of the galaxy, an astrophysicist and folklorist details everything humans have discovered—from the Milky Way's formation to its eventual death, and what else there is to learn about the universe we call home.  After a few billion years of bearing witness to life on Earth, of watching one hundred billion humans go about their day-to-day lives, of feeling unbelievably lonely, and of hearing its own story told by others, The Milky Way would like a chance to speak for itself. All one hundred billion stars and fifty undecillion tons of gas of it. It all began some thirteen billion years ago, when clouds of gas scattered through the universe's primordial plasma just could not keep their metaphorical hands off each other. They succumbed to their gravitational attraction, and the galaxy we know as the Milky Way was born. Since then, the galaxy has watched as dark energy pushed away its first friends, as humans mythologized its name and purpose, and as galactic archaeologists have worked to determine its true age (rude). The Milky Way has absorbed supermassive (an actual technical term) black holes, made enemies of a few galactic neighbors, and mourned the deaths of countless stars. Our home galaxy has even fallen in love. After all this time, the Milky Way finally feels that it's amassed enough experience for the juicy tell-all we've all been waiting for. Its fascinating autobiography recounts the history and future of the universe in accessible but scientific detail, presenting a summary of human astronomical knowledge thus far that is unquestionably out of this world.   NAMED A BEST BOOK OF 2022 BY PUBLISHERS WEEKLY AND SCIENCENET NAMED A BEST AUDIOBOOK OF 2022 BY BOOKPAGE

From the New York Times bestselling author of Extraterrestrial comes a new book explaining why becoming an interstellar species is imperative for humanity's survival and detailing a game plan for how we can settle among the stars.

A unique graduate cosmology textbook that integrates theory with modern, data-driven, computational techniques. This approach, combined with student-friendly pedagogy, helps the reader build intuitive connections between data and theory. Worked examples, computational problems, data sets, and computer code enhance the learning experience.

"In a beautifully written, science-packed, and inspirational memoir, Egyptian-American astrophysicist Sarafina El-Badry Nance shares how she boldly carved out a place in the field of astrophysics, grounding herself in a lifelong love of the stars to face life's inevitable challenges and embrace the unknown"--

Because of the correspondences existing among all levels of reality, truths pertaining to a lower level can be considered as symbols of truths at a higher level and can therefore be the "foundation" or support leading by analogy to a knowledge of the latter. This confers to every science a superior or "elevating" meaning, far deeper than its own original one. - R. GUENON, The Crisis of Modern World Having been interested in the Kepler Problem for a long time, I have al­ ways found it astonishing that no book has been written yet that would address all aspects of the problem. Besides hundreds of articles, at least three books (to my knowledge) have indeed been published al­ ready on the subject, namely Englefield (1972), Stiefel & Scheifele (1971) and Guillemin & Sternberg (1990). Each of these three books deals only with one or another aspect of the problem, though. For example, En­ glefield (1972) treats only the quantum aspects, and that in a local way. Similarly, Stiefel & Scheifele (1971) only considers the linearization of the equations of motion with application to the perturbations of celes­ tial mechanics. Finally, Guillemin & Sternberg (1990) is devoted to the group theoretical and geometrical structure.

This volume provides an overview of the fast-developing field of tidal disruption events. For several decades, astronomers speculated that a hapless star could wander too close to a massive black hole and be torn apart by tidal forces. Yet it is only with the recent advent of wide-field transient surveys that such events have been detected.Written by a team of prominent researchers, the chapters detail the discoveries made so far in this burgeoning field of study across the entire electromagnetic spectrum, from gamma-rays through X-rays, ultra-violet, optical, infrared, and radio. In addition, they show how tidal disruption events can be used to study the properties of otherwise undetectable supermassive black holes; the populations and dynamics of stars in galactic nuclei; the physics of black hole accretion, including the potential to detect relativistic effects near a SMBH; and the physics of (radio) jet formation and evolution in a pristine environment.Finally,the book outlines important outstanding questions about TDEs. With more than 100 color images, the volume will be useful to researchers and others interested in learning more about this promising area of astrophysics.Previously published in Space Science Reviews in the Topical Collection ¿The Tidal Disruption of Stars by Massive Black Holes¿

Owing to the increased accuracy requirements in fields such as astrometry and geodesy the general theory of relativity must be taken into account for any mission requiring highly accurate orbit information and for practically all observation and measurement techniques. This book highlights the confluence of Applied Mathematics, Physics and Space Science as seen from Einstein's general theory of relativity and aims to bridge the gap between theoretical and applied domains. The book investigates three distinct areas of general relativity: Exact solutions of the Einstein field equations of gravitation. Dynamics of near-Earth objects and solar system bodies. Relativistic orbitography. This book is an updated and expanded version of the author¿s PhD thesis which was awarded the International Astronomical Union PhD prize in Division A: Fundamental Astronomy. Included is a new introduction aimed at graduatestudents of General Relativity and extended discussions and results on topics in post-Newtonian dynamics and general relativistic spacecraft propagation.

WE ALL KNOW THAT WE LIVE IN MILKY WAY GALAXY...BUT ARE YOU SURE THAT EARTH IS THE ONLY PLANET WHICH CAN SUSTAIN LIFE?...WE DON'T KNOW THAT HOW MANY GALAXIES ARE THERE IN THE ENTIRE UNIVERSE..SO JUST READ THIS BOOK/ARTICLE...MAY I CAN CLEARIFY YOU... HOPE YOU WILL LIKE THIS......ADVERTISE THIS AS MUCH AS YOU CAN ON ANY SOCIAL MEDIA PLATFORM AND SENT THE SCREENSHOT ON interestinglife.becreative@gmail.com WE SELECT THE ONE WHO WILL ADVERTISE THE MOST AND MENTION THIER NAME WITH PHOTO IN THE BOOK.......

Every night, above our heads, a drama of epic proportions is playing out. Diamond planets, zombie stars, black holes heavier than a billion Suns. The cast of characters is extraordinary, and each one has its own incredible story to tell.