자료유형  

 학위논문

Control Number  

0017162522

International Standard Book Number  

9798384463672

Dewey Decimal Classification Number  

523

Main Entry-Personal Name  

Wang, Tianshu.

Publication, Distribution, etc. (Imprint  

[S.l.] : Princeton University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

229 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-04, Section: B.

General Note  

Advisor: Burrows, Adam.

Dissertation Note  

Thesis (Ph.D.)--Princeton University, 2024.

Summary, Etc.  

요약Core-collapse supernovae (CCSNe) play an important role in many parts of astrophysics from the formation of compact objects to the dynamical evolution of galaxies, and they provide laboratories for the study of fundamental physics in extreme conditions. In this dissertation, I will present some new results in the three-dimensional core-collapse supernova theory based on long-term high-fidelity first-principle three-dimensional simulations. I will will begin with a brief introduction to the observational and theoretical aspects of CCSNe, as well as a description to the simulation code Fornax. Then I will describe the upgrades on the code in the past few years, which have significantly sped up the code. These upgrades are essential for the generation of a large long-term 3D CCSN simulation suite. I will also describe some tests of the simulation code. After that, I will present the scientific findings based on the new simulations. I will first discuss the CCSN explosion mechanism and derive an easy-to-use accurate explosion criteria. Then I will compare the 1D and 3D simulation results of the lowest-mass models, showing that multi-dimensional effects can significantly influence the CCSN outcomes even if the 3D explosion looks spherical and a successful explosion can be achieved in 1D. Since the 1D and 3D differences are mostly visible in the neutrino-driven wind phase, I will present a study on the neutrino-driven wind properties in 3D simulations covering a large range of progenitor masses. Then I will take the CCSN nucleosynthesis as an example to show that the multi-dimensional effects and the long-term evolution strongly influence the theoretical predictions of observables.

Subject Added Entry-Topical Term  

Astrophysics.

Subject Added Entry-Topical Term  

Physics.

Subject Added Entry-Topical Term  

Astronomy.

Subject Added Entry-Topical Term  

Planetology.

Index Term-Uncontrolled  

Core-collapse supernovae

Index Term-Uncontrolled  

Nucleosynthesis

Index Term-Uncontrolled  

CCSN explosion

Index Term-Uncontrolled  

Galaxies

Index Term-Uncontrolled  

Multi-dimensional

Added Entry-Corporate Name  

Princeton University Astrophysical Sciences

Host Item Entry  

Dissertations Abstracts International. 86-04B.

Electronic Location and Access  

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Control Number  

joongbu:654468