Title

Tilted Accretion Disk's Precession and the Effects on Relativistic Jets

Author(s)

Tri NguyenFollow

School Name

South Carolina Governor's School for Science & Mathematics

Grade Level

12th Grade

Presentation Topic

Physics

Presentation Type

Mentored

Abstract

This paper presents the results of our efforts to simulate precession of accretion disks in a tilted system using the cubed sphere grid. The main reason for this research is the effects of the precession on the relativistic jets. Due to the nature of these jets, they suppress star formation at high power and induce star formation at low power. This eventually leads to the evolution of the entire universe as these jets have been found throughout the universe. The research used Cosmos ++, a code developed by Dr. Fragile and collaborators for astrophysical simulations. The cubed sphere grid was also used instead of the spherical polar grid. While spherical polar is more widely used, variables became broken at the poles along with the timestep being extremely small. The cubed sphere grid allows for uniform zones throughout the surface of the grid. However, getting magnetic field to work at the boundaries of the grid’s blocks have been difficult, rendering the jets unusable for our simulations. The problem is still being investigated to hopefully integrate magnetic field or a new grid will have to be used.

Location

Founders Hall 210 B

Start Date

3-30-2019 11:45 AM

Presentation Format

Oral Only

Group Project

No

COinS
 
Mar 30th, 11:45 AM

Tilted Accretion Disk's Precession and the Effects on Relativistic Jets

Founders Hall 210 B

This paper presents the results of our efforts to simulate precession of accretion disks in a tilted system using the cubed sphere grid. The main reason for this research is the effects of the precession on the relativistic jets. Due to the nature of these jets, they suppress star formation at high power and induce star formation at low power. This eventually leads to the evolution of the entire universe as these jets have been found throughout the universe. The research used Cosmos ++, a code developed by Dr. Fragile and collaborators for astrophysical simulations. The cubed sphere grid was also used instead of the spherical polar grid. While spherical polar is more widely used, variables became broken at the poles along with the timestep being extremely small. The cubed sphere grid allows for uniform zones throughout the surface of the grid. However, getting magnetic field to work at the boundaries of the grid’s blocks have been difficult, rendering the jets unusable for our simulations. The problem is still being investigated to hopefully integrate magnetic field or a new grid will have to be used.