Cornell University
Library
Cornell UniversityLibrary

eCommons

Help
Log In(current)
  1. Home
  2. Cornell University Graduate School
  3. Cornell Theses and Dissertations
  4. RELATIVISTIC FORCE-FREE ELECTRODYNAMICS WITH SPECTRAL METHODS

RELATIVISTIC FORCE-FREE ELECTRODYNAMICS WITH SPECTRAL METHODS

File(s)
ArmazaBascur_cornellgrad_0058F_13752.pdf (5.9 MB)
Permanent Link(s)
https://doi.org/10.7298/sqwb-g453
https://hdl.handle.net/1813/114563
Collections
Cornell Theses and Dissertations
Author
Armaza Bascur, Cristóbal
Abstract

In the current multi-messenger era of astronomy, the low-inertia limit of magnetohydrodynamics, or “force-free” electrodynamics, has regained attention as a first approximation to the modeling of the anticipated precursor emission from binary neutron star mergers. Over the past two decades, force-free simulations have offered valuable insight into the global properties of isolated neutron star and black hole electrodynamics. However, force-free codes frequently assume a formulation of the equations whose initial value problem is not well-posed for all wave propagation axes, rendering their applicability to more general problems uncertain. In this thesis, I explore the numerical viability of a newly developed formulation of the force-free equations using spectral methods. The new equations enjoy improved mathematical properties while retaining the physical meaning of the original system. In this work, I also complete the formulation by providing a framework suitable for boundary conditions involving neutron stars. Test cases as well as limitations are discussed.

Description
161 pages
Date Issued
2023-08
Keywords
black holes
•
hyperbolic
•
methods: boundary conditions
•
methods: characteristics
•
MHD
•
neutron stars
Committee Chair
Teukolsky, Saul
Committee Member
Chernoff, David
Lai, Dong
Nicholson, Philip
Degree Discipline
Astronomy and Space Sciences
Degree Name
Ph. D., Astronomy and Space Sciences
Degree Level
Doctor of Philosophy
Type
dissertation or thesis
Link(s) to Catalog Record
https://newcatalog.library.cornell.edu/catalog/16219466

Site Statistics | Help

About eCommons | Policies | Terms of use | Contact Us

copyright © 2002-2026 Cornell University Library | Privacy | Web Accessibility Assistance