Graduate theses
Current Record: 31 of 197
|
Title |
A systematic meta-analysis of physical parameters of Galactic supernova remnants |
Alternative Title |
Συστηματική μετα-ανάλυση φυσικών παραμέτρων γαλαξιακών υπολειμμάτων υπερκαινοφανούς |
Author
|
Χουσεΐν-Μπασιά, Ισά
|
Author
|
Hussein-Bassia, Issa
|
Thesis advisor
|
Ζέζας, Ανδρέας
|
Abstract |
Supernova remnants (SNRs) are the aftermath of massive stellar explosions, representing critical phases in the life cycle of stars and playing an important role in galactic
evolution. This study delves into the properties and evolution of Galactic SNRs through
a comprehensive statistical analysis of shock velocity, electron density and age data. Our
study provides, for the first time, a picture of the statistics of 62 Galactic SNRs both as a
population and as regions within individual objects and offers insights into their diverse
properties and evolutionary paths. Diverse shock velocity data (including upper and lower
limits) and the ages of the SNRs, processed using a Monte Carlo sampling approach, are
compared with the theoretical evolution model of Cioffi et al. We find good agreement
between the data and the model. Analysis of electron density and shock velocity distributions for the entire sample of SNRs shows that they are consistent with a log-normal
distribution and a skewed log-normal distribution, respectively. Within individual remnants, our study reveals that electron density and shock velocity show larger scatter in
younger objects, reflecting the varying conditions of the ambient medium immediately
surrounding the explosion epicenter and their impact on SNR evolution.
|
Language |
English |
Issue date |
2023-11-22 |
Collection
|
School/Department--School of Sciences and Engineering--Department of Physics--Graduate theses
|
|
Type of Work--Graduate theses
|
Permanent Link |
https://elocus.lib.uoc.gr//dlib/0/2/e/metadata-dlib-1698043287-903833-31131.tkl
|
Views |
338 |