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Strongest Gravitational Waves From Neutrino Oscillations At Supernova Core Bounce
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Book Synopsis Strongest Gravitational Waves from Neutrino Oscillations at Supernova Core Bounce by : Herman J. Mosquera Cuesta
Download or read book Strongest Gravitational Waves from Neutrino Oscillations at Supernova Core Bounce written by Herman J. Mosquera Cuesta and published by . This book was released on 2004 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time-of-flight Delay Between Oscillating Neutrinos and Gravitational Waves from Supernovae and the Neutrino Mass Problem by : Herman J. Mosquera Cuesta
Download or read book Time-of-flight Delay Between Oscillating Neutrinos and Gravitational Waves from Supernovae and the Neutrino Mass Problem written by Herman J. Mosquera Cuesta and published by . This book was released on 2001 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stellar Collapse by : Chris L. Fryer
Download or read book Stellar Collapse written by Chris L. Fryer and published by Springer Science & Business Media. This book was released on 2004-04-30 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supernovae, hypernovae and gamma-ray bursts are among the most energetic explosions in the universe. The light from these outbursts is, for a brief time, comparable to billions of stars and can outshine the host galaxy within which the explosions reside. Most of the heavy elements in the universe are formed within these energetic explosions. Surprisingly enough, the collapse of massive stars is the primary source of not just one, but all three of these explosions. As all of these explosions arise from stellar collapse, to understand one requires an understanding of the others. Stellar Collapse marks the first book to combine discussions of all three phenomena, focusing on the similarities and differences between them. Designed for graduate students and scientists newly entering this field, this book provides a review not only of these explosions, but the detailed physical models used to explain them from the numerical techniques used to model neutrino transport and gamma-ray transport to the detailed nuclear physics behind the evolution of the collapse to the observations that have led to these three classes of explosions.
Book Synopsis Detection of Core-collapse Supernovae Through Joint Analysis of LIGO Gravitational Wave and KamLAND Neutrino Data by : Emmett E. E. Krupczak
Download or read book Detection of Core-collapse Supernovae Through Joint Analysis of LIGO Gravitational Wave and KamLAND Neutrino Data written by Emmett E. E. Krupczak and published by . This book was released on 2016 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Core collapse supernova are one of the most intriguing astrophysical phenomena. The dying stage of a supergiant star, they occur when the star collapses into a protoneutron star, causing a shock wave and a gamma ray burst. High energy neutrinos are released in this process and offer the possibility of detecting these elusive cataclysms. The number of neutrinos emitted is large but at best only a few will be detected. With a multi-messenger search, we can combine the neutrino signal with another clue to the presence of a supernova: gravitational waves. During the proto-neutron star stage, a fast-rotating star can produce gravitational waves via its asymmetric and rapidly shifting mass. By combining the signals from neutrinos and gravitational waves, we can attempt to detect supernova signals that are too faint to detect alone. Joint searches have already been attempted by several neutrino experiments with high-energy thresholds, including ANTARES and IceCube. This thesis explores the possibility of a joint search with a new set of neutrino data. KamLAND (Kamioka Liquid scintillator Anti-Neutrino Detector) is a large particle detector located in Kamioka, Japan. KamLAND is well-shielded, with an low (~ 1 MeV) energy threshold and has more than ten years of data to explore, making it a good candidate for a joint search. A recent search of KamLAND's data for clustered events indicative of supernova found no clear clusters. A new search is needed to identify single-neutrino events that may have originated in supernovae. A joint search will help KamLAND more carefully examine the possible sources of its single-neutrino events. The gravitational wave data comes from LIGO (Laser Interferometer Gravitational wave Observatory). Located in Hanford, WA and Livingston, LA, LIGO consists of two four-kilometer interferometer arms. Analysis of LIGO data from 2005 to 2010 did not produce any clear gravitational wave events, leading to a need for a more sensitive search. A multimessenger search in conjunction with KamLAND provides this opportunity. We can examine both KamLAND and LIGO's data in order to search for possible supernova signals observed by both experiments. Because a joint data-sharing agreement has not been reached between KamLAND and LIGO, this thesis looks at the potential of a joint analysis and the opportunity for such a study to produce promising results.
Book Synopsis Open Issues in Core Collapse Supernova Theory by : Anthony Mezzacappa
Download or read book Open Issues in Core Collapse Supernova Theory written by Anthony Mezzacappa and published by World Scientific. This book was released on 2005 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efforts to uncover the explosion mechanism of core collapse supernovae and to understand all of their associated phenomena have been ongoing for nearly four decades. Despite this, our theoretical understanding of these cosmic events remains limited; two- and three-dimensional modeling of these events is in its infancy. Most of the modeling efforts over the past four decades have, by necessity, been constrained to spherical symmetry, with the first two-dimensional, albeit simplified, models appearing only during the last decade. Simulations to understand the complex interplay between the turbulent stellar core fluid flow, its magnetic fields, the neutrinos produced in and emanating from the proto-neutron star, the stellar core rotation, and the strong gravitational fields have yet to be performed. Only subsets of these fundamental ingredients have been included in the models thus far, often with approximation. The purpose of this volume is to identify the outstanding issues that remain in order to come to a complete understanding of these important astrophysical events. As the book focuses on open issues rather than the current state of the art in the field OCo although the latter will certainly be discussed OCo it will remain relevant for some time."
Book Synopsis Investigating the Oscillation Modes of Proto-Neutron Stars and Core-Collapse Supernovae by : Thomas Nguyen
Download or read book Investigating the Oscillation Modes of Proto-Neutron Stars and Core-Collapse Supernovae written by Thomas Nguyen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: When a massive enough star dies, it can undergo a supernova explosion, releasing enormous amounts of energy and leaving behind a turbulent dead star core. The matter and gas of the star compresses down, and due to conservation of angular momentum, the dead star core begins to rotate many times faster and demonstrates many extreme properties. These dead star cores, called neutron stars, possess densities trillions of times those of the Sun, rotate hundreds of times per second, and have magnetic fields trillions of times those of Earth. The explosion and core-collapse event that results in these objects have been studied and analysis of these events allow researchers to better understand the fringes of physics. Despite vigorous simulations and studies by many astronomical researchers for 50 years, much still eludes us on supernovae explosion and neutron star phenomenon. Because of their distance and other observational challenges, very little is still known about the processes inside of neutron stars and the supernovae core collapses that generate them. One of the promising aspects for future investigation involves determining properties based off of their emitted gravitational waves and neutrinos, one of the few potential ways we can gather insight into their internal mechanisms. The LIGO observatory has detected gravitational waves from merging neutron stars, providing useful data to discover more of the state of matter inside neutron stars. For my project, I investigate the gravitational wave signals from singular neutron star sources. During the proto-neutron star phase (PNS), where the star core is still thermodynamically unstable and highly energetic right after supernova collapse, gravitational waves have been predicted to be generated. These waves can be generated from internal means, such as convection, or external means, such as the accretion of matter. Modeling these events will provide deeper comprehension into what modes of oscillation are dominant and capable of emitting gravitational waves. This, in turn, will guide the interpretation of future observations.
Book Synopsis Sensitivity of Neutrino-driven Core-collapse Supernova Models to the Microphysical Equation of State by : Ryan Elliott Landfield
Download or read book Sensitivity of Neutrino-driven Core-collapse Supernova Models to the Microphysical Equation of State written by Ryan Elliott Landfield and published by . This book was released on 2018 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this dissertation is to explore the sensitivity of neutrino-driven core collapse supernova physics to the microphysical equation of state of the stellar matter. Core collapse supernovae result from the gravitational collapse and ensuing explosion of massive stars. The most fundamental question in core collapse supernova (CCSN) theory is the mechanism of shock revival leading to the observed supernova explosion. The leading scenario is that neutrinos trapped in the proto-neutron star (PNS) during its formation escape and reheat the inner shock, reviving the shockwave, which expands outward, ejecting the star's outer shells into space. Given the central importance of the delayed heating mechanism to the dynamics of CCSNe, detailed studies of the dynamics of the neutrino heating mechanism, neutrino and gravitational wave (GW) signatures, and the dependence on both neutrino-matter interaction rates and the nuclear equation of state (EOS) are needed. The first direct detection of a GW emission from a CCSN would allow for a qualitative investigation into the accuracy of existing nuclear-force models via the EOS. Hence accurate CCSN numerical models are imminently necessary to predict and interpret such GW signatures. A tandem measurement of neutrino signature modulations and GWs would provide direct information about the CCSN mechanism and further our insight into the origins of neutron star rotation and kicks. In order to enhance the computational capability of the ORNL/UTK CCSN simulations, firstly I have developed the capacity to implement different pre-processed state-of-the-art EOS tables in the ORNL/UTK multi-D SN code CHIMERA. I have developed the multi-purpose EOS/Opacity table repository WeakLib for this purpose. Secondly, I have implemented these different EOS in 1D and 2D CHIMERA to study the impact of the EOS on the collapse, bounce, and post-bounce dynamics of the CCSNe explosion, as well as the impact on neutrino emission signals.
Book Synopsis Gravitational Waves from 3D MHD Core-collapse Supernova Simulations with Neutrino Transport by : Simon Urs Scheidegger
Download or read book Gravitational Waves from 3D MHD Core-collapse Supernova Simulations with Neutrino Transport written by Simon Urs Scheidegger and published by . This book was released on 2011 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interpreting Gravitational Waves and Developing Relativistic Multiphysics Solvers for Core-collapse Supernova Simulations by : Michael Anton Pajkos
Download or read book Interpreting Gravitational Waves and Developing Relativistic Multiphysics Solvers for Core-collapse Supernova Simulations written by Michael Anton Pajkos and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Core-collapse supernovae (CCSNe) mark the endpoint for millions of years of massive stellar evolution. After a successful explosion, supernovae increase the metallicity of the interstellar medium, generate intense electromagnetic radiation ionizing their surroundings, generate compact objects such as black holes or neutron stars, and create ripples in spacetime-gravitational waves (GWs). Advances in supernova theory over the past few decades have furthered our understanding of CCSNe. However, constraints on the physics enshrouded in the supernova center would further illuminate their explosion mechanisms. Advances in high performance computing (HPC) resources and the ever-increasing sensitivities of GW observatories have positioned the field of astrophysics between two recent technological advances. The work presented here leverages HPC to perform CCSN simulations, allowing astronomers to translate between GW signals and internal physics. Using this insight, astronomers are better positioned to constrain the physics driving these explosive events that have such a widespread influence throughout astronomy.Investigating the evolution of 12-, 20-, 40-, and 60 M[ancient] progenitors, I perform axisymmetric neutrino radiation-hydrodynamic CCSN simulations, to relate the convective activity behind the supernova shock to the expected GW strength. I quantify how the rotational content of the supernova lowers GW frequencies. I present a novel method that combines two features of a single GW event to constrain the mass distribution within the stellar progenitor. By only requiring the two most detectable parts of the GW signal, astronomers can also potentially predict the explosion properties 8́ơdays before shock breakout. I present work with my undergraduate research assistant, that considers the impact of viewing angle on detecting GWs from CCSNe. Presented is a novel analysis method to identify the distribution of GW emission over all angles, accompanied with results showing that the preferred direction of GW emission for CCSNe migrates over time.Lastly, I present new numerical solvers targeted at exascale computing platforms that account for magnetized fluid evolution with velocities near the speed of light and in extreme spacetimes. These solvers are accompanied with stringent baseline tests, paired with 1D and 2D supernova simulations making use of these features.
Book Synopsis Foundations of Radiation Hydrodynamics by : Dimitri Mihalas
Download or read book Foundations of Radiation Hydrodynamics written by Dimitri Mihalas and published by Courier Corporation. This book was released on 2013-04-10 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excellent, informative volume focuses on dynamics of nonradiating fluids, problems involving waves, shocks and stellar winds, physics of radiation, radiation transport, and the dynamics of radiating fluids. 1984 edition.
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 Neutron Stars, Black Holes and Gravitational Waves by : James J Kolata
Download or read book Neutron Stars, Black Holes and Gravitational Waves written by James J Kolata and published by . This book was released on 2019-04-10 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Albert Einstein's General Theory of Relativity, published in 1915, made a remarkable prediction: gravitational radiation. Just like light (electromagnetic radiation), gravity could travel through space as a wave and affect any objects it encounters by alternately compressing and expanding them. However, there was a problem. The force of gravity is around a trillion, trillion, trillion times weaker than electromagnetism so the calculated compressions and expansions were incredibly small, even for gravity waves resulting from a catastrophic astrophysical event such as a supernova explosion in our own galaxy. Discouraged by this result, physicists and astronomers didn't even try to detect these tiny, tiny effects for over 50 years. Then, in the late 1960's and early 1970's, two events occurred which started the hunt for gravity waves in earnest. The first was a report of direct detection of gravity waves thousands of times stronger than even the most optimistic calculation. Though ultimately proved wrong, this result started scientists thinking about what instrumentation might be necessary to detect these waves. The second was an actual, though indirect, detection of gravitational radiation due to the effects it had on the period of rotation of two "neutron stars" orbiting each other. In this case, the observations were in exact accord with predictions from Einstein's theory, which confirmed that a direct search might ultimately be successful. Nevertheless, it took another 40 years of development of successively more sensitive detectors before the first real direct effects were observed in 2015, 100 years after gravitational waves were first predicted. This is the story of that hunt, and the insight it is producing into an array of topics in modern science, from the creation of the chemical elements to insights into the properties of gravity itself.
Author :Behram N. Kursunogammalu Publisher :Springer Science & Business Media ISBN 13 :1489915648 Total Pages :388 pages Book Rating :4.4/5 (899 download)
Book Synopsis Neutrino Mass, Dark Matter, Gravitational Waves, Monopole Condensation, and Light Cone Quantization by : Behram N. Kursunogammalu
Download or read book Neutrino Mass, Dark Matter, Gravitational Waves, Monopole Condensation, and Light Cone Quantization written by Behram N. Kursunogammalu and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference, Orbis Scientiae 1996, focused on the topics: The Neutrino Mass, Light Cone Quantization, Monopole Condensation, Dark Matter, and Gravitational Waves which we have adopted as the title of these proceedings. Was there any exciting news at the conference? Maybe, it depends on who answers the question. There was an almost unanimous agreement on the overall success of the conference as was evidenced by the fact that in the after-dinner remarks by one of us (BNK) the suggestion of organizing the conference on a biannual basis was presented but not accepted: the participants wanted the continuation of the tradition to convene annually. We shall, of course, comply. The expected observation of gravitational waves will constitute the most exciting vindication of Einstein's general relativity. This subject is attracting the attention of the experimentalists and theorists alike. We hope that by the first decade of the third millennium or earlier, gravitational waves will be detected, opening the way for a search for gravitons somewhere in the universe, presumably through the observations in the CMBR. The theoretical basis of the graviton search will take us to quantum gravity and eventually to the modification of general relativity to include the Planck scale behavior of gravity -at energies 19 of the order of 10 Ge V.
Book Synopsis Rotating Relativistic Stars by : John L. Friedman
Download or read book Rotating Relativistic Stars written by John L. Friedman and published by Cambridge University Press. This book was released on 2013-02-11 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: The masses of neutron stars are limited by an instability to gravitational collapse and an instability driven by gravitational waves limits their spin. Their oscillations are relevant to x-ray observations of accreting binaries and to gravitational wave observations of neutron stars formed during the coalescence of double neutron-star systems. This volume includes more than forty years of research to provide graduate students and researchers in astrophysics, gravitational physics and astronomy with the first self-contained treatment of the structure, stability and oscillations of rotating neutron stars. This monograph treats the equations of stellar equilibrium; key approximations, including slow rotation and perturbations of spherical and rotating stars; stability theory and its applications, from convective stability to the r-mode instability; and numerical methods for computing equilibrium configurations and the nonlinear evolution of their oscillations. The presentation of fundamental equations, results and applications is accessible to readers who do not need the detailed derivations.
Book Synopsis Probing Supernova Shock Waves Via Neutrino Oscillations by : Nicholas Harries
Download or read book Probing Supernova Shock Waves Via Neutrino Oscillations written by Nicholas Harries and published by . This book was released on 2008 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stars as Laboratories for Fundamental Physics by : Georg G. Raffelt
Download or read book Stars as Laboratories for Fundamental Physics written by Georg G. Raffelt and published by University of Chicago Press. This book was released on 1996-05 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of what we know about neutrinos is revealed by astronomical observations, and the same applies to the axion, a conjectured new particle that is a favored candidate for the main component of the dark matter of the universe.
Book Synopsis Gravitational-Wave Astronomy by : Nils Andersson
Download or read book Gravitational-Wave Astronomy written by Nils Andersson and published by Oxford University Press. This book was released on 2019-11-28 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to gravitational waves and related astrophysics. It provides a bridge across the range of astronomy, physics and cosmology that comes into play when trying to understand the gravitational-wave sky. Starting with Einstein's theory of gravity, chapters develop the key ideas step by step, leading up to the technology that finally caught these faint whispers from the distant universe. The second part of the book makes a direct connection with current research, introducing the relevant language and making the involved concepts less mysterious. The book is intended to work as a platform, low enough that anyone with an elementary understanding of gravitational waves can scramble onto it, but at the same time high enough to connect readers with active research - and the many exciting discoveries that are happening right now. The first part of the book introduces the key ideas, following a general overview chapter and including a brief reminder of Einstein's theory. This part can be taught as a self-contained one semester course. The second part of the book is written to work as a collection of "set pieces" with core material that can be adapted to specific lectures and additional material that provide context and depth. A range of readers may find this book useful, including graduate students, astronomers looking for basic understanding of the gravitational-wave window to the universe, researchers analysing data from gravitational-wave detectors, and nuclear and particle physicists.
