Výbuchy ve Vesmíru pomocí pohyblivých sítí
| Thesis title in Czech: | Výbuchy ve Vesmíru pomocí pohyblivých sítí |
|---|---|
| Thesis title in English: | Astrophysical explosions with moving meshes |
| Academic year of topic announcement: | 2024/2025 |
| Thesis type: | diploma thesis |
| Thesis language: | |
| Department: | Institute of Theoretical Physics (32-UTF) |
| Supervisor: | doc. Mgr. Ondřej Pejcha, Ph.D. |
| Author: | |
| Advisors: | Diego Nicolas Calderón Espinoza, Ph.D. |
| Guidelines |
| There has been mounting evidence that some of the most spectacular explosive phenomena in the Universe are often not spherically symmetric and that this asymmetry is produced by shock-collimated outflows. A simple example of such a setup is a spherical blast wave hitting a pre-existing equatorially-concentrated disk, which was implicated for certain supernovae, classical novae, and stellar mergers.
Radiation leaking out of the aspherical explosion cannot be adequately described with simulations in spherical symmetry, but multi-dimensional codes with detailed physics do not provide immediate physical insight into the underlying physics. The goal of the thesis is to simulate observational signatures of various astrophysical explosions, including superluminous supernovae powered by magnetar spindown or shock interaction, classical nova explosions, or other peculiar objects. The thesis will utilize a novel code developed in our group that solves equations of radiative hydrodynamics on radially expanding meshes. Results will be interpreted using analytic theory. |
| References |
| Steinberg & Metzger 2017, https://ui.adsabs.harvard.edu/abs/2019arXiv190801700S/abstract
Metzger & Pejcha 2017, https://ui.adsabs.harvard.edu/abs/2017MNRAS.471.3200M/abstract Smith et al. 2017, https://ui.adsabs.harvard.edu/abs/2018MNRAS.480.1466S/abstract Calderon et al. 2021, https://ui.adsabs.harvard.edu/abs/2021MNRAS.507.1092C/abstract |
| Preliminary scope of work |
| http://utf.mff.cuni.cz/~pejcha/ |