Investigating The Oscillation Modes Of Proto Neutron Stars And Core Collapse Supernovae

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.