eprintid: 34803
rev_number: 14
eprint_status: archive
userid: 8139
dir: disk0/00/03/48/03
datestamp: 2024-05-14 08:13:31
lastmod: 2024-05-27 16:11:55
status_changed: 2024-05-14 08:13:31
type: doctoralThesis
metadata_visibility: show
creators_name: Moran Fraile, Javier
title: Simulating the dynamical interaction of
white dwarf stars in binaries
subjects: ddc-520
subjects: ddc-530
divisions: i-130001
divisions: i-999906
adv_faculty: af-13
abstract: 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
id_scheme: DOI
id_number: 10.11588/heidok.00034803
ppn_swb: 1889954012
own_urn: urn:nbn:de:bsz:16-heidok-348036
date_accepted: 2024-04-30
advisor: HASH(0x558eaa8571f0)
language: eng
bibsort: MORANFRAILSIMULATING20240507
full_text_status: public
place_of_pub: Heidelberg
citation:   Moran Fraile, Javier  (2024) Simulating the dynamical interaction of white dwarf stars in binaries.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/34803/1/PhD_Thesis.pdf