title: Simulating the dynamical interaction of  white dwarf stars in binaries
creator: Moran Fraile, Javier
subject: ddc-520
subject: 520 Astronomy and allied sciences
subject: ddc-530
subject: 530 Physics
description: Binary stellar interactions that take place on dynamical timescales are some of  the most challenging processes to model in astronomy, and are best described by  multidimensional, multi-physics simulations. The focus of this thesis is on the  numerical modeling of some of the least explored stellar interactions, with a spe-  cial emphasis on those involving white dwarfs. This work presents three different  studies using three-dimensional hydrodynamic simulations. In the first place, the  emission of gravitational waves during common-envelope events is studied, esti-  mating the chances for their detection with future space-based detectors. Secondly,  the tidal disruption of a white dwarf by a neutron star is studied, showing how the  accurate modeling of these events requires the inclusion of a multitude of physi-  cal processes including magnetic fields, nuclear reactions and neutrino emission.  Finally, through a third simulation, it is shown how mergers between low-mass  white dwarfs, with total masses substantially below the Chandrasekhar limit, can  lead to thermonuclear explosions under the right conditions. The results of this  thesis stress how dynamical interactions between stars can produce a multitude  of bright transients, and how the use of advanced multidimensional, multi-physics  codes for their modeling will help improve our understanding of the physics and  processes involved.
date: 2024
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/34803/1/PhD_Thesis.pdf
identifier: DOI:10.11588/heidok.00034803
identifier: urn:nbn:de:bsz:16-heidok-348036
identifier:   Moran Fraile, Javier  (2024) Simulating the dynamical interaction of white dwarf stars in binaries.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/34803/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng