Presentation Title

Visualizing the Curvature of Spacetime: Vortex and Tendex Lines of a Head-On Merging Binary Black Hole Systems

Faculty Mentor

Geoffrey Lovelace

Start Date

18-11-2017 2:15 PM

End Date

18-11-2017 3:15 PM

Location

BSC-Ursa Minor 29

Session

Poster 3

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

A black hole is formed when a massive star can no longer support the thermonuclear processes in its core that hold the star up against its gravity. Inside a black hole's surface, called its horizon, nothing can escape. Merging black holes and the gravitational waves---ripples of curved spacetime---they emit are the most promising sources for gravitational-wave detectors like Advanced LIGO. When black holes merge, the spacetime around them becomes curved in a dynamic, turbulent way, like a storm in spacetime. In this project, we use analogs of electric and magnetic field lines to visualize the curved spacetime of merging black holes. A non-spinning black hole will produce Tendicity; along tendex lines (analogs of electric field lines), objects are stretched and squeezed. A spinning black hole will produce Tendicity but will also twist the spacetime around it like a tornado, producing vorticity; along vortex lines (analogs of magnetic field lines), objects are twisted. We reproduce simulations from a past paper with equal masses, moderate spins, and produce visualizations of vortex and tendex lines showing how the curved spacetime behaves as the holes merge. The intent is to gain some intuition of the dynamics of spacetime around binary black holes. In the future, we will extend this work to rapidly spinning merging black holes.

Summary of research results to be presented

I am going to be discussing the code that I used to create this work. I will be showing visualizations of work that I made.

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Nov 18th, 2:15 PM Nov 18th, 3:15 PM

Visualizing the Curvature of Spacetime: Vortex and Tendex Lines of a Head-On Merging Binary Black Hole Systems

BSC-Ursa Minor 29

A black hole is formed when a massive star can no longer support the thermonuclear processes in its core that hold the star up against its gravity. Inside a black hole's surface, called its horizon, nothing can escape. Merging black holes and the gravitational waves---ripples of curved spacetime---they emit are the most promising sources for gravitational-wave detectors like Advanced LIGO. When black holes merge, the spacetime around them becomes curved in a dynamic, turbulent way, like a storm in spacetime. In this project, we use analogs of electric and magnetic field lines to visualize the curved spacetime of merging black holes. A non-spinning black hole will produce Tendicity; along tendex lines (analogs of electric field lines), objects are stretched and squeezed. A spinning black hole will produce Tendicity but will also twist the spacetime around it like a tornado, producing vorticity; along vortex lines (analogs of magnetic field lines), objects are twisted. We reproduce simulations from a past paper with equal masses, moderate spins, and produce visualizations of vortex and tendex lines showing how the curved spacetime behaves as the holes merge. The intent is to gain some intuition of the dynamics of spacetime around binary black holes. In the future, we will extend this work to rapidly spinning merging black holes.