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The Importance Of Spin For Observing Gravitational Waves From Coalescing Compact Binaries With Ligo And Virgo
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Book Synopsis The Importance of Spin for Observing Gravitational Waves from Coalescing Compact Binaries with LIGO and Virgo by : Stephen M. Privitera
Download or read book The Importance of Spin for Observing Gravitational Waves from Coalescing Compact Binaries with LIGO and Virgo written by Stephen M. Privitera and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravitational Waves from Coalescing Binaries by : Stanislav Babak
Download or read book Gravitational Waves from Coalescing Binaries written by Stanislav Babak and published by Morgan & Claypool Publishers. This book was released on 2020-04-21 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is to help post-graduate students to get into gravitational wave astronomy. We assume the knowledge of General Relativity theory, though we will concentrate on the physics and often omit mathematically strict derivations. We provide references to already existing literature where possible, this helps us to see a broad picture, skipping the details. The uniqueness of this book is in that it covers three frequency bands and three major world-wide efforts to detect gravitational waves. The LIGO and Virgo scientific collaboration has detected first gravitational waves and the merger of black holes become now almost a routine. We do expect many discoveries yet to come, especially in the joined gravitational and electromagnetic observations. LISA, the space-based gravitational wave observatory, will be launched around 2034 and will be able to detect thousands of GW sources in the milli-Hz band. Pulsar timing array observations have accumulated 20-years' worth of data and we expected detection of GWs in the nano-Hz band within the next decade. We describe the gravitational wave sources and data analysis techniques in each frequency band.
Book Synopsis Handbook of Gravitational Wave Astronomy by : Cosimo Bambi
Download or read book Handbook of Gravitational Wave Astronomy written by Cosimo Bambi and published by Springer Nature. This book was released on 2022-07-02 with total page 1895 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides an updated comprehensive description of gravitational wave astronomy. In the first part, it reviews gravitational wave experiments, from ground and space based laser interferometers to pulsar timing arrays and indirect detection from the cosmic microwave background. In the second part, it discusses a number of astrophysical and cosmological gravitational wave sources, including black holes, neutron stars, possible more exotic objects, and sources in the early Universe. The third part of the book reviews the methods to calculate gravitational waveforms. The fourth and last part of the book covers techniques employed in gravitational wave astronomy data analysis. This book represents both a valuable resource for graduate students and an important reference for researchers in gravitational wave astronomy.
Book Synopsis RIFT'ing the Waves by : Jacob A. Lange
Download or read book RIFT'ing the Waves written by Jacob A. Lange and published by . This book was released on 2020 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: "With the Advanced LIGO and Virgo ground-based detectors consistently identifying more compact binary coalesces, the need for fast, reliable, and unbiased parameter inference is ever more vital. To that end, we introduce RIFT: an algorithm to perform Rapid parameter inference on gravitational wave sources via Iterative FiTting. To demonstrate RIFT can recover the correct parameters of coalescing compact binary systems, we compare results to the well-tested LALInference parameter inference software. We provide several examples where the unique speed and flexibility of RIFT enables otherwise intractable or awkward parameter inference analyses, such as (a) adopting costly and novel models for outgoing gravitational waves and (b) mixed-model result, each suitable to different parts of the compact binary parameter space and allowing one to use more sophisticated approximations where valid but still producing a complete posterior distribution. We also demonstrate how RIFT can be applied specifically to binary neutron stars, both for parameter inference and direct constraints on the nuclear equation of state. We also show that two precessing models often used in inferring the properties of coalescing black hole binaries disagree substantially when sources have modestly large spins and modest mass ratios. We demonstrate these disagreements using standard figures of merit and the parameters inferred for some detections of binary black holes from O1 and O2. By comparing to numerical relativity, we confirm these disagreements reflect systematic errors. We provide concrete examples to demonstrate that these systematic errors can significantly impact inferences about astrophysically significant binary parameters. In response to LIGO's observation of GW170104, a series of full numerical simulations of binary black holes were performed, each designed to replicate likely realizations of its dynamics and radiation. These simulations have been performed at multiple resolutions and with two independent techniques to solve Einstein's equations. For both the nonprecessing and precessing simulations, we demonstrate the two techniques agree at a precision substantially in excess of statistical uncertainties in current LIGO's observations. Conversely, we demonstrate that these full numerical solutions contain information which is not accurately captured with the approximate phenomenological models. To quantify the impact of these differences on parameter inference for GW170104 specifically, we compare the predictions of our simulations and these approximate models to LIGO's observations of GW170104. Using one of the novel numerical relativity surrogate models, we also investigate the importance of higher order modes when inferring the parameters of coalescing compact binaries. We focus on examples relevant to the current three-detector network of observatories with a detector-frame mass set to 120$M_\odot$ and with signal amplitudes values that are consistent with plausible candidates for the next few observing runs. We show that for such systems the higher mode content will be important for interpreting coalescing binary black holes, reducing systematic bias, and computing properties of the remnant object. Using similar tools, we finally use RIFT to analyze many real data events. This includes the loudest marginal intermediate mass binary black hole trigger from the 1st and 2nd Observing Runs as well as a subset of the events from the first half of the 3rd Observing Run. This includes both 15 binary black hole candidates and 1 binary neutron star candidate."--Abstract.
Book Synopsis Gravitational Waves: A New Window to the Universe by : Rosalba Perna
Download or read book Gravitational Waves: A New Window to the Universe written by Rosalba Perna and published by Frontiers Media SA. This book was released on 2021-07-02 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Searching for Gravitational Waves from Compact Binary Coalescence Using LIGO and Virgo Data by : Collin D. Capano
Download or read book Searching for Gravitational Waves from Compact Binary Coalescence Using LIGO and Virgo Data written by Collin D. Capano and published by . This book was released on 2011 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Detection of Gravitational Waves by : David G. Blair
Download or read book The Detection of Gravitational Waves written by David G. Blair and published by Cambridge University Press. This book was released on 2005-10-13 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the concepts of gravitational waves within the context of general relativity. The sources of gravitational radiation for which there is direct observational evidence and those of a more speculative nature are described. He then gives a general introduction to the methods of detection. In the subsequent chapters he has drawn together the leading scientists in the field to give a comprehensive practical and theoretical account of the physics and technology of gravitational wave detection.
Book Synopsis Physics of Gravitational Waves by : Arun Kenath
Download or read book Physics of Gravitational Waves written by Arun Kenath and published by Springer Nature. This book was released on 2023-05-01 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise introduction to the physics of gravitational waves. It is aimed at graduate-level students and PhD scholars. Ever since the discovery of gravitational waves in 2016, gravitational wave astronomy has been adding to our understanding of the universe. Gravitational waves have been detected in the past few years from several transient events such as merging stellar-mass black holes, binary neutron stars, etc. These waves have frequencies in a band ranging from a few hundred hertz to around a kilohertz to which LIGO type instruments are sensitive. LISA will be sensitive to much lower range of frequencies from SMBH mergers. Apart from these cataclysmic burst events, there are innumerable sources of radiation which are continuously emitting gravitational waves of all frequencies. These include a whole mass range of compact binary and isolated compact objects and close planetary stellar entities. This book discusses the gravitational wave background produced in typical frequency ranges from such sources emitting over a Hubble time and the fluctuations in the h values measured in the usual devices. Also discussed are the high-frequency thermal background gravitational radiation from hot stellar interiors and newly formed compact objects. The reader will also learn how gravitational waves provide a testing tool for various theories of gravity, i.e. general relativity and extended theories of gravity, and will be the definitive test for general relativity.
Book Synopsis Analysis of Gravitational-Wave Data by : Piotr Jaranowski
Download or read book Analysis of Gravitational-Wave Data written by Piotr Jaranowski and published by Cambridge University Press. This book was released on 2009-08-27 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing gravitational-wave data analysis, this book is an ideal starting point for researchers entering the field, and researchers currently analyzing data. Detailed derivations of the basic formulae enable readers to apply general statistical concepts to the analysis of gravitational-wave signals. It also discusses new ideas on devising the efficient algorithms.
Book Synopsis Gravitational Waves by : Ajit Kembhavi
Download or read book Gravitational Waves written by Ajit Kembhavi and published by Springer Nature. This book was released on 2020-08-06 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravitational waves were first predicted by Albert Einstein in 1916, a year after the development of his new theory of gravitation known as the general theory of relativity. This theory established gravitation as the curvature of space-time produced by matter and energy. To be discernible even to the most sensitive instruments on Earth, the waves have to be produced by immensely massive objects like black holes and neutron stars which are rotating around each other, or in the extreme situations which prevail in the very early ages of the Universe. This book presents the story of the prediction of gravitational waves by Albert Einstein, the early attempts to detect the waves, the development of the LIGO detector, the first detection in 2016, the subsequent detections and their implications. All concepts are described in some detail, without the use of any mathematics and advanced physics which are needed for a full understanding of the subject. The book also contains description of electromagnetism, Einstein’s special theory and general theory of relativity, white dwarfs, neutron stars and black holes and other concepts which are needed for understanding gravitational waves and their effects. Also described are the LIGO detectors and the cutting edge technology that goes into building them, and the extremely accurate measurements that are needed to detect gravitational waves. The book covers these ideas in a simple and lucid fashion which should be accessible to all interested readers. The first detection of gravitational waves was given a lot of space in the print and electronic media. So, the curiosity of the non-technical audience has been aroused about what gravitational waves really are and why they are so important. This book seeks to answer such questions.
Book Synopsis General Relativity and Gravitation by : Abhay Ashtekar
Download or read book General Relativity and Gravitation written by Abhay Ashtekar and published by Cambridge University Press. This book was released on 2015-06-01 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore spectacular advances in cosmology, relativistic astrophysics, gravitational wave science, mathematics, computational science, and the interface of gravitation and quantum physics with this unique celebration of the centennial of Einstein's discovery of general relativity. Twelve comprehensive and in-depth reviews, written by a team of world-leading international experts, together present an up-to-date overview of key topics at the frontiers of these areas, with particular emphasis on the significant developments of the last three decades. Interconnections with other fields of research are also highlighted, making this an invaluable resource for both new and experienced researchers. Commissioned by the International Society on General Relativity and Gravitation, and including accessible introductions to cutting-edge topics, ample references to original research papers, and informative colour figures, this is a definitive reference for researchers and graduate students in cosmology, relativity, and gravitational science.
Book Synopsis Spin-precessing Compact Binaries by : Katerina Chatziioannou
Download or read book Spin-precessing Compact Binaries written by Katerina Chatziioannou and published by . This book was released on 2016 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation we study the effect of spin-precession on gravitational waves emitted by quasicircular compact binary systems. In their most generic configuration, compact objects in a binary system are subject to interactions between the spin and the orbital angular momenta. These interactions give rise to precessional effects that add rich structure to the emitted gravitational waveforms. We study this spin-induced structure with an emphasis on extracting the information it encodes. In particular, we construct gravitational wave models that accurately capture spin-precessional effects. We then use them to study how much information relevant to astrophysics and nuclear physics we can extract from future observations of gravitational waves from compact binary coalescences.
Book Synopsis Fundamentals Of Interferometric Gravitational Wave Detectors (Second Edition) by : Peter R Saulson
Download or read book Fundamentals Of Interferometric Gravitational Wave Detectors (Second Edition) written by Peter R Saulson and published by World Scientific. This book was released on 2017-02-16 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The content of the Saulson’s book remains valid and offers a versatile introduction to gravitational wave astronomy. The book is appropriate for undergraduate students and can be read by graduate students and researchers who want to be involved in either the theoretical or the experimental traits of the study of gravitational waves.'Contemporary PhysicsLIGO's recent discovery of gravitational waves was headline news around the world. Many people will want to understand more about what a gravitational wave is, how LIGO works, and how LIGO functions as a detector of gravitational waves.This book aims to communicate the basic logic of interferometric gravitational wave detectors to students who are new to the field. It assumes that the reader has a basic knowledge of physics, but no special familiarity with gravitational waves, with general relativity, or with the special techniques of experimental physics. All of the necessary ideas are developed in the book.The first edition was published in 1994. Since the book is aimed at explaining the physical ideas behind the design of LIGO, it stands the test of time. For the second edition, an Epilogue has been added; it brings the treatment of technical details up to date, and provides references that would allow a student to become proficient with today's designs.
Book Synopsis Einstein Was Right by : Jed Z. Buchwald
Download or read book Einstein Was Right written by Jed Z. Buchwald and published by Princeton University Press. This book was released on 2020-10-13 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative interdisciplinary account of the historic discovery of gravitational waves In 1915, Albert Einstein predicted the existence of gravitational waves—ripples in the fabric of spacetime caused by the movement of large masses—as part of the theory of general relativity. A century later, researchers with the Laser Interferometer Gravitational-Wave Observatory (LIGO) confirmed Einstein's prediction, detecting gravitational waves generated by the collision of two black holes. Shedding new light on the hundred-year history of this momentous achievement, Einstein Was Right brings together essays by two of the physicists who won the Nobel Prize for their instrumental roles in the discovery, along with contributions by leading scholars who offer unparalleled insights into one of the most significant scientific breakthroughs of our time. This illuminating book features an introduction by Tilman Sauer and invaluable firsthand perspectives on the history and significance of the LIGO consortium by physicists Barry Barish and Kip Thorne. Theoretical physicist Alessandra Buonanno discusses the new possibilities opened by gravitational wave astronomy, and sociologist of science Harry Collins and historians of science Diana Kormos Buchwald, Daniel Kennefick, and Jürgen Renn provide further insights into the history of relativity and LIGO. The book closes with a reflection by philosopher Don Howard on the significance of Einstein's theory for the philosophy of science. Edited by Jed Buchwald, Einstein Was Right is a compelling and thought-provoking account of one of the most thrilling scientific discoveries of the modern age.
Book Synopsis Phase Transitions in the Early Universe: Theory and Observations by : Héctor J. De Vega
Download or read book Phase Transitions in the Early Universe: Theory and Observations written by Héctor J. De Vega and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fundamental, profound review of the key issues relating to the early universe and the physical processes that occurred in it. The interplay between cosmic microwave background radiation, large scale structure, and the dark matter problem are stressed, with a central focus on the crucial issue of the phase transitions in the early universe and their observable consequences: baryon symmetry, baryogenesis and cosmological fluctuations. There is an interplay between cosmology, statistical physics and particle physics in studying these problems, both at the theoretical and the experimental / observational levels. Special contributions are devoted to primordial and astrophysical black holes and to high energy cosmic rays and neutrino astrophysics. There is also a special section devoted to the International Space Station and its scientific utilization.
Book Synopsis Characterizing Astrophysical Sources of Gravitational Waves by : Joey Shapiro Key
Download or read book Characterizing Astrophysical Sources of Gravitational Waves written by Joey Shapiro Key and published by . This book was released on 2010 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Laser Interferometer Space Antenna (LISA) and the Laser Interferometer Gravitational-wave Observatory (LIGO) are designed to detect gravitational waves from a wide range of astrophysical sources. The parameter estimation ability of these detectors can be determined by simulating the response to predicted gravitational wave sources with instrument noise and searching for the signals with sophisticated data analysis methods. A possible source of gravitational waves will be beams of radiation from discontinuities on cosmic length strings. Cosmic strings are predicted to form kinks and cusps that travel along the string at close to the speed of light. These disturbances are radiated away as highly beamed gravitational waves that produce a burst-like pulse as the cone of emission sweeps past an observer. The detection of a gravitational wave signal from a cosmic string cusp would illuminate the fields of string theory, cosmology, and relativity. Gravitational wave sources also include coalescing binary systems of compact objects. Colliding galaxies have central black holes that sink to the center of the merged galaxy and begin to orbit one another and emit gravitational waves. Previous LISA data analysis studies have assumed that binary black hole systems have a circular orbit or an extreme mass ratio. It is ultimately necessary to understand the general case of spinning black hole binary systems in eccentric orbits and how LISA observations can be used to measure the eccentricity of the orbits as well as the masses, spins, and luminosity distances of the black holes. Once LISA is operational, the comparison of observations of eccentric and circular black hole binary sources will constrain theories on galaxy mergers in the early universe.
Book Synopsis Constraints on Compact Binary Formation and Effective Gravitational Wave Likelihood Approximation by : Vera Del Favero
Download or read book Constraints on Compact Binary Formation and Effective Gravitational Wave Likelihood Approximation written by Vera Del Favero and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Since the initial discovery of gravitational-waves from merging black holes, the LIGO Scientific Collaboration together with Virgo and KAGRA have published 90 gravitational-wave observations of compact binary mergers in the Gravitational-Wave Transient Catalog papers. One of the quintessential questions of this decade in gravitational-wave astronomy is the characterization and impact of the population of observed gravitational-wave signals from merging black holes and neutron stars. Now, there is greater incentive than ever to study the formation channels for these compact binary mergers. In this work, we carry out an investigation of isolated binary evolution formation channel, comparing predictions of the gravitational-wave population from the StarTrack synthetic universe simulations to the observed population of compact binary mergers in order to constrain certain astrophysical processes in binary evolution. In due course, we construct, apply, and provide parametric and non-parametric models for the likelihood function of the full set of astrophysical parameters of each event in the Gravitational-Wave Transient Catalogs, including truncated multivariate normal distributions normalized on a bounded interval, which we have shared in our associated publications [63, 64]. We present the findings of our investigation of the formation parameters for the isolated binary evolution formation channel for compact objects. We have uncovered confounding systematic effects in our model by considering the agreement and disagreement of predictions based on the event rate and mass distribution. Furthermore, our preliminary results demonstrate the benefits of a multi-dimensional analysis which is sensitive to the interdependence of the predicted detection population on many formation parameters. Our essential contribution is therefore a method for carrying out such an analysis efficiently, while considering its self-consistency. We discuss potential sources of bias as we also present the properties of our best binary evolution models, which are consistent with unrestricted stellar mass loss due to winds, high mass and angular momentum loss to ejected portions of a common envelope, and substantial black hole supernova recoil kicks. We conclude with a discussion of the impact of these activities for gravitational-wave and multi-messenger astronomy."--Abstract.
