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Observations And Theory Of Short Grbs At The Dawn Of The Gravitational Wave Era
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Book Synopsis Observations and Theory of Short GRBs at the Dawn of the Gravitational Wave Era by : Giulia Stratta
Download or read book Observations and Theory of Short GRBs at the Dawn of the Gravitational Wave Era written by Giulia Stratta and published by MDPI. This book was released on 2019-09-30 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book starts with a review of the established facts on the numerical simulations of binary neutron star mergers and simulations of short GRB jets that highlights the issues that need to be revised and further clarified, as the need to understand how the relativistic outflow was launched, what the initial structure of the outflow is, and how it evolved through its interaction with the binary ejecta. Constraints on a local population of faint short duration GRBs are then provided in light of the GW170817/GRB 170817A event at d~40 Mpc by considering statistical limits on a d < 200 Mpc population. Using past and current GRB detectors, results suggest that GRB 170817A-like events are likely to be rare in existing short GRB catalogues and, if binary neutron star merger rates are at the high end of current estimates, then at most a few percent will be accompanied by detectable gamma-ray flashes in the forthcoming LIGO/Virgo science runs. Indirect information on the nature of short GRBs can be obtained from their host galaxy. The host galaxies of most short GRBs are found to be star-forming, but an important fraction, ∼1/5, are elliptical with negligible star formation. Short bursts often occur at very large off-sets from their hosts, in regions where there is little or no underlying host light. These results provide evidence of progenitors associated with merger of compact object binaries with kick velocities of a few tens of km/s and merger times of ∼1 Gyr. The last two issues of the book tackle the physics of the short GRB radiative processes. Interestingly, it was already noted in the past that the prompt emission for short GRBs and the initial 2 s of long-duration GRBs show similarity in the low energy photon index. This result has been further confirmed using a larger sample of Fermi Gamma-ray burst monitor data. In particular, it has been found that for 25% of GRBs, the photon index is shallower than −2/3, challenging the standard synchrotron emission scenario. The extent up to which the reverse shock component is detectable for short GRBs in radio wavelengths is analyzed. Results show that early, radio bright reverse shock is expected in many cases, but more rapid follow-up observational campaigns are required in order to test these predictions.
Book Synopsis Observations and Theory of Short GRBs at the Dawn of the Gravitational Wave Era by :
Download or read book Observations and Theory of Short GRBs at the Dawn of the Gravitational Wave Era written by and published by Mdpi AG. This book was released on 2019-09-26 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book starts with a review of the established facts on the numerical simulations of binary neutron star mergers and simulations of short GRB jets that highlights the issues that need to be revised and further clarified, as the need to understand how the relativistic outflow was launched, what the initial structure of the outflow is, and how it evolved through its interaction with the binary ejecta. Constraints on a local population of faint short duration GRBs are then provided in light of the GW170817/GRB 170817A event at d 40 Mpc by considering statistical limits on a d Fermi Gamma-ray burst monitor data. In particular, it has been found that for 25% of GRBs, the photon index is shallower than -2/3, challenging the standard synchrotron emission scenario. The extent up to which the reverse shock component is detectable for short GRBs in radio wavelengths is analyzed. Results show that early, radio bright reverse shock is expected in many cases, but more rapid follow-up observational campaigns are required in order to test these predictions.
Book Synopsis Observations and Theory of Short GRBs at the Dawn of the Gravitational Wave Era by : Giulia Stratta
Download or read book Observations and Theory of Short GRBs at the Dawn of the Gravitational Wave Era written by Giulia Stratta and published by . This book was released on 2019 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book starts with a review of the established facts on the numerical simulations of binary neutron star mergers and simulations of short GRB jets that highlights the issues that need to be revised and further clarified, as the need to understand how the relativistic outflow was launched, what the initial structure of the outflow is, and how it evolved through its interaction with the binary ejecta. Constraints on a local population of faint short duration GRBs are then provided in light of the GW170817/GRB 170817A event at d~40 Mpc by considering statistical limits on a d
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 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 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 Gravitational Waves by : I. Ciufolini
Download or read book Gravitational Waves written by I. Ciufolini and published by CRC Press. This book was released on 2001-01-29 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravitational waves (GWs) are a hot topic and promise to play a central role in astrophysics, cosmology, and theoretical physics. Technological developments have led us to the brink of their direct observation, which could become a reality in the coming years. The direct observation of GWs will open an entirely new field: GW astronomy. This is expe
Book Synopsis Gravitational Waves by : Hartmut Grote
Download or read book Gravitational Waves written by Hartmut Grote and published by CRC Press. This book was released on 2019-12-23 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The historic detection of gravitational waves on September 14, 2015, prompted by the highly energetic fusion of two black holes, has made events in the universe "audible" for the first time. This expansion of the scientific sensorium has opened a new chapter in astronomy and already led to, among others, fascinating new insights about the abundance of black holes, the collision of neutron stars, and the origin of heavy chemical elements. The history of this event, which is epochal for physics, is reconstructed in this book, along with a walk-through of the main principles of how the detectors operate and a discussion of how the search for gravitational waves is conducted. The book concludes with an update of the latest detections and developments to date and a brief look into the future of this exciting research field. This book is accessible to non-specialist readers from a general audience and is also an excellent introduction to the topic for undergraduates in physics. Features: Provides an introduction to the historic discovery of gravitational waves Explains the inner workings of the detectors and the search to find the waves hidden in the data Authored by a renowned specialist involved in the ground-breaking discovery Hartmut Grote is a Professor of physics at Cardiff University, UK. His main expertise is in experimental gravitational-wave physics, and he has worked on building and improving gravitational wave detectors for over 20 years. From 2009 to 2017, he was the scientific leader of the British-German gravitational-wave detector: GEO600.
Book Synopsis Gravitational Waves by : Isaac Carson
Download or read book Gravitational Waves written by Isaac Carson and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The search for fast growing infinitesimal perturbations in the Friedmann-Lemaître-Robertson-Walker universe within Einsteins General Relativity is regarded as very important for explanation of observational inhomogeneities such as nebulae and clusters of galaxies. Chapter One reports on numerical solutions of Hawkings equations for gravitational waves in evolutionary universe, which includes wave-matter interaction. Chapter Two presents an overview of various options of direct including of SQUID into a system for registering effects of super weak elongation or very little force. Chapter Three reviews previous work on constraining gravitational radiation from elliptically deformed pulsars with terrestrial nuclear laboratory data in light of the recent gravitational wave detection, and estimates the maximum gravitational wave strain amplitude, using an optimistic value for the breaking strain of the neutron star crust. Chapter Four explores the LIGO signal GW150914 within the braneworld scenario. Future space flight propelled by artificially-generated Gravitational Wave (GW) beam is discussed within the framework of the General Relativity theory in the final chapter of this book.
Book Synopsis Gravitational Waves by : Amber L. Stuver
Download or read book Gravitational Waves written by Amber L. Stuver and published by . This book was released on 2019 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The detection of gravitational waves has ushered in a new era of gravitational wave astronomy and added a new medium to multi-messenger astronomy. This book examines the theoretical foundation of gravitational waves and the state of the art of gravitational wave detection including interferometric detectors and pulsar timing arrays. The design and sensitivity of the LIGO interferometers are examined. The source and data analysis method for each of the four main classes of gravitational waves (compact binary coalescence, burst, continuous, and stochastic) are described. A summary of the gravitational waves that have been detected as of January 2019 is presented along with what gravitational wave astronomy has been extracted from these observations. Finally, what the future of gravitational wave exploration looks like in terms of ground-based and space-based detectors is presented.
Book Synopsis Gravitational Waves by : Carlos Frajuca
Download or read book Gravitational Waves written by Carlos Frajuca and published by Intechopen. This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravitational waves were predicted by Albert Einstein in his most famous theory, the general theory of relativity, but it took almost a century for these waves to be detected and their existence proven. This book introduces gravitational waves and discusses some of their applications in five dimensions, this is all done in classical gravity. It also explains gravitational waves in quantum gravity (in which the universe is considered to be not continuous) and implications for trying to understand and explore dark energy and an expanding accelerated universe.
Book Synopsis Gravitational Wave Astronomy by : Lee Samuel Finn
Download or read book Gravitational Wave Astronomy written by Lee Samuel Finn and published by . This book was released on 2011-11-29 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Academies of Sciences, Engineering, and Medicine Publisher : ISBN 13 :9780309467346 Total Pages :615 pages Book Rating :4.4/5 (673 download)
Book Synopsis Pathways to Discovery in Astronomy and Astrophysics for the 2020s by : National Academies of Sciences, Engineering, and Medicine
Download or read book Pathways to Discovery in Astronomy and Astrophysics for the 2020s written by National Academies of Sciences, Engineering, and Medicine and published by . This book was released on 2022-08-04 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The steering committee was specifically asked to (1) provide an overview of the current state of astronomy and astrophysics science, and technology research in support of that science, with connections to other scientific areas where appropriate; (2) identify the most compelling science challenges and frontiers in astronomy and astrophysics, which shall motivate the committee’s strategy for the future; (3) develop a comprehensive research strategy to advance the frontiers of astronomy and astrophysics for the period 2022-2032 that will include identifying, recommending, and ranking the highest-priority research activities; (4) utilize and recommend decision rules, where appropriate, that can accommodate significant but reasonable deviations in the projected budget or changes in urgency precipitated by new discoveries or unanticipated competitive activities; (5) assess the state of the profession, including workforce and demographic issues in the field, identify areas of concern and importance to the community, and where possible, provide specific, actionable, and practical recommendations to the agencies and community to address these areas. This report proposes a broad, integrated plan for space- and ground-based astronomy and astrophysics for the decade 2023-2032. It also lays the foundations for further advances in the following decade.
Book Synopsis Gravitational Waves in Physics and Astrophysics by : M. Coleman Miller
Download or read book Gravitational Waves in Physics and Astrophysics written by M. Coleman Miller and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The direct detection of gravitational waves in 2015 has initiated a new era of gravitational wave astronomy, which has already paid remarkable dividends in our understanding of astrophysics and gravitational physics. Aimed at advanced undergraduates and graduate students, this book introduces gravitational waves and its many applications to cosmology, nuclear physics, astrophysics and theoretical physics.
Book Synopsis Gravitational-Wave Astronomy by : Nicolas Ehiginator
Download or read book Gravitational-Wave Astronomy written by Nicolas Ehiginator and published by Createspace Independent Publishing Platform. This book was released on 2016-09-10 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravitational-wave astronomy is recent sub-field of astronomy using observations of gravitational waves.
Book Synopsis Theory and Experiment in Gravitational Physics by : Clifford M. Will
Download or read book Theory and Experiment in Gravitational Physics written by Clifford M. Will and published by Cambridge University Press. This book was released on 1981-12-31 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1985 text offers a comprehensive survey of research and testing conducted in general relativity. As background it introduces the important principles of gravitational theory and develops the mathematical formalism necessary to carry out specific computations in order to compare theoretical predictions with experimental findings. The survey of experimental results includes not only Einstein's classical tests but also solar-system tests, never envisioned by Einstein, that make use of the high-precision space technology of the 1960s and 1970s. It also gives a systematic account of the remarkable 'binar pulsar' PSP 1913 16, the first evidence of gravitational waves. This volume will be a useful point of reference for any reader interested in the empirical underpinnings of one of the great theories of the twentieth century.
Book Synopsis New Worlds, New Horizons in Astronomy and Astrophysics by : National Research Council
Download or read book New Worlds, New Horizons in Astronomy and Astrophysics written by National Research Council and published by National Academies Press. This book was released on 2011-02-04 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Driven by discoveries, and enabled by leaps in technology and imagination, our understanding of the universe has changed dramatically during the course of the last few decades. The fields of astronomy and astrophysics are making new connections to physics, chemistry, biology, and computer science. Based on a broad and comprehensive survey of scientific opportunities, infrastructure, and organization in a national and international context, New Worlds, New Horizons in Astronomy and Astrophysics outlines a plan for ground- and space- based astronomy and astrophysics for the decade of the 2010's. Realizing these scientific opportunities is contingent upon maintaining and strengthening the foundations of the research enterprise including technological development, theory, computation and data handling, laboratory experiments, and human resources. New Worlds, New Horizons in Astronomy and Astrophysics proposes enhancing innovative but moderate-cost programs in space and on the ground that will enable the community to respond rapidly and flexibly to new scientific discoveries. The book recommends beginning construction on survey telescopes in space and on the ground to investigate the nature of dark energy, as well as the next generation of large ground-based giant optical telescopes and a new class of space-based gravitational observatory to observe the merging of distant black holes and precisely test theories of gravity. New Worlds, New Horizons in Astronomy and Astrophysics recommends a balanced and executable program that will support research surrounding the most profound questions about the cosmos. The discoveries ahead will facilitate the search for habitable planets, shed light on dark energy and dark matter, and aid our understanding of the history of the universe and how the earliest stars and galaxies formed. The book is a useful resource for agencies supporting the field of astronomy and astrophysics, the Congressional committees with jurisdiction over those agencies, the scientific community, and the public.
