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Time Of Flight Delay Between Oscillating Neutrinos And Gravitational Waves From Supernovae And The Neutrino Mass Problem
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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 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 Problems of Collapse and Numerical Relativity by : D. Bancel
Download or read book Problems of Collapse and Numerical Relativity written by D. Bancel and published by Springer Science & Business Media. This book was released on 1984-08-31 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Toulouse, France, November 7-11, 1983
Book Synopsis Neutrino Oscillations And Their Origin - Proceedings Of The Fifth International Workshop by : Yoichiro Suzuki
Download or read book Neutrino Oscillations And Their Origin - Proceedings Of The Fifth International Workshop written by Yoichiro Suzuki and published by World Scientific. This book was released on 2005-06-23 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together international experts in diverse areas of physics to discuss recent progress in the experimental and theoretical study of neutrino oscillations.Readers are brought up to date with the latest developments in important neutrino experiments, and the associated progress in theory is summarized. The principal projects worldwide, such as Super-Kamiokande, SNO, KamLAND, are considered, and contributions also report on future experiments, including JPARC, OPERA, and MINOS.Several other related topics, such as dark matter, double beta decay, lepton flavor violation, and cosmology, are discussed, reflecting the wide-ranging specializations of many contributors outside of pure neutrino physics.
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 Neutrinos and Explosive Events in the Universe by : Todor Stanev
Download or read book Neutrinos and Explosive Events in the Universe written by Todor Stanev and published by Springer Science & Business Media. This book was released on with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis A Search for Muon Neutrino to Electron Neutrino Oscillations in the MINOS Experiment by : Juan Pedro Ochoa-Ricoux
Download or read book A Search for Muon Neutrino to Electron Neutrino Oscillations in the MINOS Experiment written by Juan Pedro Ochoa-Ricoux and published by Springer. This book was released on 2013-05-29 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The centerpiece of the thesis is the search for muon neutrino to electron neutrino oscillations which would indicate a non-zero mixing angle between the first and third neutrino generations (θ13), currently the “holy grail” of neutrino physics. The optimal extraction of the electron neutrino oscillation signal is based on the novel “library event matching” (LEM) method which Ochoa developed and implemented together with colleagues at Caltech and at Cambridge, which improves MINOS’ (Main Injector Neutrino Oscillator Search) reach for establishing an oscillation signal over any other method. LEM will now be the basis for MINOS’ final results, and will likely keep MINOS at the forefront of this field until it completes its data taking in 2011. Ochoa and his colleagues also developed the successful plan to run MINOS with a beam tuned for antineutrinos, to make a sensitive test of CPT symmetry by comparing the inter-generational mass splitting for neutrinos and antineutrinos. Ochoa’s in-depth, creative approach to the solution of a variety of complex experimental problems is an outstanding example for graduate students and longtime practitioners of experimental physics alike. Some of the most exciting results in this field to emerge in the near future may find their foundations in this thesis.
Book Synopsis Supernovae Neutrinos as a Probe for Neutrino Mass and Supernovae Explosion Mechanism by : Rob Gross
Download or read book Supernovae Neutrinos as a Probe for Neutrino Mass and Supernovae Explosion Mechanism written by Rob Gross and published by . This book was released on 2002 with total page 226 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 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 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 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 Introduction to the Physics of Massive and Mixed Neutrinos by : Samoil Bilenky
Download or read book Introduction to the Physics of Massive and Mixed Neutrinos written by Samoil Bilenky and published by Springer Science & Business Media. This book was released on 2010-09-14 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years neutrino was considered a massless particle. The theory of a two-componentneutrino,whichplayedacrucialroleinthecreationofthetheoryof theweakinteraction,isbasedontheassumptionthattheneutrinomassisequalto zero. We now know that neutrinos have nonzero, small masses. In numerous exp- iments with solar, atmospheric, reactor and accelerator neutrinos a new p- nomenon, neutrino oscillations, was observed. Neutrino oscillations (periodic transitionsbetweendifferent?avorneutrinos? ,? ,? )arepossibleonlyifneutrino e ? ? mass-squareddifferencesaredifferentfromzeroandsmalland?avorneutrinosare “mixed”. The discovery of neutrino oscillations opened a new era in neutrino physics: an era of investigation of neutrino masses, mixing, magnetic moments and other neutrino properties. After the establishment of the Standard Model of the el- troweak interaction at the end of the seventies, the discovery of neutrino masses was the most important discovery in particle physics. Small neutrino masses cannot be explained by the standard Higgs mechanism of mass generation. For their explanation a new mechanism is needed. Thus, small neutrino masses is the ?rst signature in particle physics of a new beyond the Standard Model physics. It took many years of heroic efforts by many physicists to discover n- trino oscillations. After the ?rst period of investigation of neutrino oscillations, manychallengingproblemsremainedunsolved.Oneofthemostimportantisthe problem of the nature of neutrinos with de?nite masses. Are they Dirac n- trinos possessing a conserved lepton number which distinguish neutrinos and antineutrinos or Majorana neutrinos with identical neutrinos and antineutrinos? Many experiments of the next generation and new neutrino facilities are now under preparation and investigation. There is no doubt that exciting results are ahead.
Book Synopsis Neutrino Mass and Oscillation in Matter and in Cosmology by : Liguo Song
Download or read book Neutrino Mass and Oscillation in Matter and in Cosmology written by Liguo Song and published by . This book was released on 2004 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutrino Cosmology by : Julien Lesgourgues
Download or read book Neutrino Cosmology written by Julien Lesgourgues and published by Cambridge University Press. This book was released on 2013-02-21 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained guide to the role played by neutrinos in the Universe and how their properties influence cosmological and astrophysical observations.
Book Synopsis Neutrino Oscillations and Their Origin by : Y. Suzuki
Download or read book Neutrino Oscillations and Their Origin written by Y. Suzuki and published by . This book was released on 2002 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt:
