Physics Master of Science Thesis Defense by Caleb Derochea
When: Wednesday,
May 1, 2024
9:30 AM
-
11:30 AM
Where: > See description for location
Description: Topic: Assessing the Dynamically Driven Double-Degenerate Double-Detonation (D6) Progenitor Model for Type Ia Supernovae: A Comparison of Dynamic and Adaptive Mesh Simulations
Location: SENG 201
Abstract:
Type Ia supernovae (SNe Ia) play a crucial role in deciphering cosmological phenomena, including the accelerated expansion of the universe. Despite their significance, the driving mechanisms behind SNe Ia are yet to be fully confirmed. The dynamically driven double-degenerate double-detonation (D6) scenario has gained traction as the most likely explanation for nine hypervelocity galactic white dwarfs discovered by the ESA Gaia space mission. In this thesis, I will present a comparative analysis of hydrodynamical simulations of D6 SNe Ia using two leading hydrodynamical simulation frameworks: AREPO, which utilizes an unstructured, Voronoi tessellation dynamic moving mesh, and FLASH, with its structured adaptive Eulerian mesh. I will briefly describe the impact of our findings on the physical processes which give rise to SNe Ia.
ADVISOR(s): Dr. Robert Fisher, Department of Physics (rfisher1@umassd.edu)
COMMITTEE MEMBERS:
Dr. Jay Wang, Department of Physics
Dr. David Kagan, Department of Physics
NOTE: All PHY Graduate Students are ENCOURAGED to attend.
Location: SENG 201
Abstract:
Type Ia supernovae (SNe Ia) play a crucial role in deciphering cosmological phenomena, including the accelerated expansion of the universe. Despite their significance, the driving mechanisms behind SNe Ia are yet to be fully confirmed. The dynamically driven double-degenerate double-detonation (D6) scenario has gained traction as the most likely explanation for nine hypervelocity galactic white dwarfs discovered by the ESA Gaia space mission. In this thesis, I will present a comparative analysis of hydrodynamical simulations of D6 SNe Ia using two leading hydrodynamical simulation frameworks: AREPO, which utilizes an unstructured, Voronoi tessellation dynamic moving mesh, and FLASH, with its structured adaptive Eulerian mesh. I will briefly describe the impact of our findings on the physical processes which give rise to SNe Ia.
ADVISOR(s): Dr. Robert Fisher, Department of Physics (rfisher1@umassd.edu)
COMMITTEE MEMBERS:
Dr. Jay Wang, Department of Physics
Dr. David Kagan, Department of Physics
NOTE: All PHY Graduate Students are ENCOURAGED to attend.
Contact: Physics Department
Topical Areas: Faculty, Staff and Administrators, Students, Students, Graduate, Students, Undergraduate