eprintid: 36909
rev_number: 19
eprint_status: archive
userid: 9158
dir: disk0/00/03/69/09
datestamp: 2025-07-24 08:19:30
lastmod: 2025-08-08 09:54:31
status_changed: 2025-07-24 08:19:30
type: doctoralThesis
metadata_visibility: show
creators_name: Coppée, Quentin Charles Yvon Hugues
title: Characterising the suppression of non-radial modes in red giants
subjects: ddc-520
divisions: i-130001
divisions: i-714300
divisions: i-999906
adv_faculty: af-13
abstract: Magnetic fields are thought to play a significant role in various phenomena in the Universe, in particular in the evolution and the structure of stars. With asteroseismology, it is possible to probe the inner structure of stars. In this thesis, we investigate the properties of the oscillations of red giants that show signs of energy loss. We observationally constrained the mechanism causing this energy loss and found that it is consistent with the predicted effect of magnetic field in the core of the red giant. Using recent developments, we were also able to observe frequency shifts due to a magnetic field in the core of stars. We analysed stars with both magnetic frequency shifts and energy loss in the oscillations and showed that both phenomena can be explained by a magnetic field with the same field strength located in the core of the stars.
date: 2025
id_scheme: DOI
id_number: 10.11588/heidok.00036909
fp7_project_id: ERC Consolidator Grant DipolarSound (grant agreement 101000296)
ppn_swb: 1932746331
own_urn: urn:nbn:de:bsz:16-heidok-369093
date_accepted: 2025-07-15
advisor: HASH(0x5638d6013038)
language: eng
bibsort: COPPEEQUENCHARACTERI20250715
full_text_status: public
place_of_pub: Heidelberg
citation:   Coppée, Quentin Charles Yvon Hugues  (2025) Characterising the suppression of non-radial modes in red giants.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/36909/1/PhDThesis.pdf