New Frontiers In Grmhd Simulations
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New Frontiers In Grmhd Simulations
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Author : Cosimo Bambi
language : en
Publisher: Springer Nature
Release Date : 2025-03-10
New Frontiers In Grmhd Simulations written by Cosimo Bambi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-03-10 with Science categories.
This book offers an updated comprehensive review of the rapidly expanding field of GRMHD simulations. In Part I, it reviews the basic equations for GRMHD simulations and for numerical relativity. Part II describes public codes for GRMHD simulations. Part III is devoted to accretion processes onto compact objects in the non-self-gravitating fluid approximation. Part IV reviews the state of the art of GRMHD simulations with self-gravitating fluids. This book represents both a valuable book for graduate students and important reference resource for researchers in the field.
Superradiance
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Author : Richard Brito
language : en
Publisher: Springer Nature
Release Date : 2020-08-21
Superradiance written by Richard Brito and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-21 with Science categories.
This book focuses on one mechanism in black hole physics which has proven to be universal, multifaceted and with a rich phenomenology: rotational superradiance. This is an energy extraction process, whereby black holes can deposit their rotational energy in their surroundings, leading to Penrose processes, black-hole bombs, and even Hawking radiation. Black holes are key players in star formation mechanisms and as engines to some of the most violent events in our universe. Their simplicity and compactness make them perfect laboratories, ideally suited to probe new fields or modifications to the theory of gravity. Thus, black holes can also be used to probe some of the most important open problems in physics, including the nature of dark matter or the strong CP problem in particle physics. This monograph is directed to researchers and graduate students and provides a unified view of the subject, covering the theoretical machinery, experimental efforts in the laboratory, and astrophysics searches. It is focused on recent developments and works out a number of novel examples and applications, ranging from fundamental physics to astrophysics. Non-specialists with a scientific background should also find this text a valuable resource for understanding the critical issues of contemporary research in black-hole physics. This second edition stresses the role of ergoregions in superradiance, and completes its catalogue of energy-extraction processes. It presents a unified description of instabilities of spinning black holes in the presence of massive fields. Finally, it covers the first experimental observation of superradiance, and reviews the state-of-the-art in the searches for new light fields in the universe using superradiance as a mechanism.
Gravitational Waves A New Window To The Universe
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Author : Rosalba Perna
language : en
Publisher: Frontiers Media SA
Release Date : 2021-07-02
Gravitational Waves A New Window To The Universe written by Rosalba Perna and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-02 with Science categories.
The Secret Of Our Success
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Author : Joseph Henrich
language : en
Publisher: Princeton University Press
Release Date : 2017-10-17
The Secret Of Our Success written by Joseph Henrich and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-17 with Psychology categories.
How our collective intelligence has helped us to evolve and prosper Humans are a puzzling species. On the one hand, we struggle to survive on our own in the wild, often failing to overcome even basic challenges, like obtaining food, building shelters, or avoiding predators. On the other hand, human groups have produced ingenious technologies, sophisticated languages, and complex institutions that have permitted us to successfully expand into a vast range of diverse environments. What has enabled us to dominate the globe, more than any other species, while remaining virtually helpless as lone individuals? This book shows that the secret of our success lies not in our innate intelligence, but in our collective brains—on the ability of human groups to socially interconnect and learn from one another over generations. Drawing insights from lost European explorers, clever chimpanzees, mobile hunter-gatherers, neuroscientific findings, ancient bones, and the human genome, Joseph Henrich demonstrates how our collective brains have propelled our species' genetic evolution and shaped our biology. Our early capacities for learning from others produced many cultural innovations, such as fire, cooking, water containers, plant knowledge, and projectile weapons, which in turn drove the expansion of our brains and altered our physiology, anatomy, and psychology in crucial ways. Later on, some collective brains generated and recombined powerful concepts, such as the lever, wheel, screw, and writing, while also creating the institutions that continue to alter our motivations and perceptions. Henrich shows how our genetics and biology are inextricably interwoven with cultural evolution, and how culture-gene interactions launched our species on an extraordinary evolutionary trajectory. Tracking clues from our ancient past to the present, The Secret of Our Success explores how the evolution of both our cultural and social natures produce a collective intelligence that explains both our species' immense success and the origins of human uniqueness.
Numerical Relativity Starting From Scratch
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Author : Thomas W. Baumgarte
language : en
Publisher: Cambridge University Press
Release Date : 2021-04-08
Numerical Relativity Starting From Scratch written by Thomas W. Baumgarte and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-08 with Science categories.
Numerical relativity has emerged as the key tool to model gravitational waves - recently detected for the first time - that are emitted when black holes or neutron stars collide. This book provides a pedagogical, accessible, and concise introduction to the subject. Relying heavily on analogies with Newtonian gravity, scalar fields and electromagnetic fields, it introduces key concepts of numerical relativity in a context familiar to readers without prior expertise in general relativity. Readers can explore these concepts by working through numerous exercises, and can see them 'in action' by experimenting with the accompanying Python sample codes, and so develop familiarity with many techniques commonly employed by publicly available numerical relativity codes. This is an attractive, student-friendly resource for short courses on numerical relativity, as well as providing supplementary reading for courses on general relativity and computational physics.
High Energy Astrophysics Research Enabled By The Probe Class Mission Concept Hex P
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Author : Gabriele Ponti
language : en
Publisher: Frontiers Media SA
Release Date : 2025-06-02
High Energy Astrophysics Research Enabled By The Probe Class Mission Concept Hex P written by Gabriele Ponti and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-02 with Science categories.
The Astro 2020 Decadal report (Pathways to Discovery in Astronomy and Astrophysics for the 2020s) identified the need for a new class of mission for the next decade that fills the gap between a Mid-sized Explorer (MIDEX) and Flagship (Large) mission. The report specifically recommends that a cadence of one probe mission per decade with a cost cap of $1.5 billion balances scientific scope with timeliness. NASA has followed this recommendation and opened a call for Astrophysics Probe Explorer (APEX) proposals, restricted to either a far-infrared or an X-ray mission, due in Fall 2023 with a planned launch date in no later than 2032. In response to this call, the High-Energy X-ray Probe (HEX-P) concept has been developed as a partnership between NASA’s Jet Propulsion Laboratory (JPL), the California Institute of Technology (Caltech), and the NASA Goddard Space Flight Center (GSFC), with international partnership from the Italian Space Agency (ASI; Italy), the German Space Agency (DLR), and the Max Planck Institute for Extraterrestrial Physics (MPE; Germany). HEX-P is a mission concept that offers sensitive broad-band coverage from soft to hard X-rays (0.2 − 80 keV), with an exceptional combination of spectral, timing, and angular capabilities. It features two high-energy telescopes (HETs) that focus hard X-rays, and one low-energy telescope (LET) that focuses lower energy X-rays, building upon the heritage of previous successful missions such as XMM-Newton and NuSTAR. With this leap in observational capability, HEX-P will be capable of addressing fundamental questions about the extreme environments around black holes and neutron stars, map the growth of supermassive black holes, and quantify the effect they have on their environments. HEX-P will resolve the hard X-ray emission from dense regions of our Galaxy to understand the high-energy source populations and investigate dark matter candidate particles through their decay channel signatures. In this Frontiers Research Topic we present a collection of papers which delve into some of the most exciting scientific questions that can be addressed with a mission like HEX-P. The papers have been prepared by members of the HEX-P collaboration, which is organized into four main scientific pillars: • Black Hole Growth • Accretion Power • Stellar Evolution • Time-Domain and Multi-Messenger Astronomy The individual papers cover a range of topics, including: • The cosmic X-ray background • Seyfert galaxies, Compton-thick active galaxies, and blazars • Black hole binaries, neutron stars, magnetars, ultraluminous X-ray sources, and tidal disruption events • The physics of the X-ray corona • X-ray populations in nearby galaxies • Supernova remnants, pulsar wind nebulae, and nuclear astrophysics • Galactic PeVatrons, star clusters, superbubbles, microquasar jets, and gamma-ray binaries • The Galactic Center • Supermassive black spin measurements and dual active galaxies • Pulsar Timing, electromagnetic counterparts of gravitational wave sources and transient phenomena The main goal of this Research Topic is to present detailed modeling and simulations for a range of HEX-P science cases in order to demonstrate the capabilities of HEX-P in serving the astrophysics community in the next decade. The members of the HEX-P mission are welcome to present Original Research papers, as well as any other kind of article types that fit their manuscript. Please, have a look at here to choose the appropriate article type to submit to this collection. This Research Topic is organized by the researchers of the HEX-P mission. Authors and Guest Editors belong to the same consortium. Furthermore, Dr. Daniel Stern and Dr. Javier Garcia are the Principal Investigator and the Project Scientist of the mission respectively. All manuscripts will be peer-reviewed by researchers external to the collaboration.
Astrophysics Of Black Holes
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Author : Cosimo Bambi
language : en
Publisher: Springer
Release Date : 2016-07-28
Astrophysics Of Black Holes written by Cosimo Bambi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-28 with Science categories.
This book discusses the state of the art of the basic theoretical and observational topics related to black hole astrophysics. It covers all the main topics in this wide field, from the theory of accretion disks and formation mechanisms of jet and outflows, to their observed electromagnetic spectrum, and attempts to measure the spin of these objects. Black holes are one of the most fascinating predictions of general relativity and are currently a very hot topic in both physics and astrophysics. In the last five years there have been significant advances in our understanding of these systems, and in the next five years it should become possible to use them to test fundamental physics, in particular to predict the general relativity in the strong field regime. The book is both a reference work for researchers and a textbook for graduate students.
Introduction To Particle Cosmology
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Author : Cosimo Bambi
language : en
Publisher: Springer
Release Date : 2015-08-14
Introduction To Particle Cosmology written by Cosimo Bambi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-08-14 with Science categories.
This book introduces the basic concepts of particle cosmology and covers all the main aspects of the Big Bang Model (expansion of the Universe, Big Bang Nucleosynthesis, Cosmic Microwave Background, large scale structures) and the search for new physics (inflation, baryogenesis, dark matter, dark energy). It also includes the majority of recent discoveries, such as the precise determination of cosmological parameters using experiments like WMAP and Planck, the discovery of the Higgs boson at LHC, the non-discovery to date of supersymmetric particles, and the search for the imprint of gravitational waves on the CMB polarization by Planck and BICEP. This textbook is based on the authors’ courses on Cosmology, and aims at introducing Particle Cosmology to senior undergraduate and graduate students. It has been especially written to be accessible even for those students who do not have a strong background in General Relativity and quantum field theory. The content of this book is organized in an easy-to-use style and students will find it a helpful research guide.
Introduction To General Relativity
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Author : Cosimo Bambi
language : en
Publisher: Springer
Release Date : 2018-06-18
Introduction To General Relativity written by Cosimo Bambi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-18 with Science categories.
Following the approach of Lev Landau and Evgenii Lifshitz, this book introduces the theory of special and general relativity with the Lagrangian formalism and the principle of least action. This method allows the complete theory to be constructed starting from a small number of assumptions, and is the most natural approach in modern theoretical physics. The book begins by reviewing Newtonian mechanics and Newtonian gravity with the Lagrangian formalism and the principle of least action, and then moves to special and general relativity. Most calculations are presented step by step, as is done on the board in class. The book covers recent advances in gravitational wave astronomy and provides a general overview of current lines of research in gravity. It also includes numerous examples and problems in each chapter.
Frontiers In Numerical Relativity
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Author : Charles R. Evans
language : en
Publisher: Cambridge University Press
Release Date : 1989-04-13
Frontiers In Numerical Relativity written by Charles R. Evans and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989-04-13 with Mathematics categories.
This 1989 text will be of value to those who wish to understand developments in computer studies of general relativity at the time of publication.