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Investigating properties of multi-stranded filament structures in the galactic center

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The Galactic Center (GC) is an extreme region of the Milky Way possessing elevated molecular temperatures and densities. A population of unique structures exists in the GC known as the non-thermal filaments (NTFs), which are highly polarized, thread-like structures. Much remains unknown about these thread-like structures, such as how they were formed and why they only appear in the GC. Recent 1 GHz observations of the GC using MeerKAT have identified several multi-stranded NTFs throughout the GC region. These multi-stranded NTFs contrast with the previously studied NTFs that contain only one or a few filaments (single-stranded NTFs). One key question is whether the multi-stranded and single-stranded NTFs were formed in different ways. For my dissertation I study the multi-stranded NTFs to determine whether there are any systematic differences between the single- and multi-stranded NTF population. I begin with a targeted study of the most prominent multi-stranded NTF, known as the Radio Arc. This study used the Australia Telescope Compact Array interferometer to study the Radio Arc over a wide frequency range (4 - 12 GHz). I then discuss a Very Large Array study of several multi-stranded NTFs observed from 4 - 12 GHz, beginning with their total intensity properties such as their morphologies and spectral indices. I then analyze the polarimetric and magnetic field properties of these structures. From these studies I find that the multi-stranded NTFs were likely formed in the same way as the single-stranded NTFs.
Title: Investigating properties of multi-stranded filament structures in the galactic center
Description:
The Galactic Center (GC) is an extreme region of the Milky Way possessing elevated molecular temperatures and densities.
A population of unique structures exists in the GC known as the non-thermal filaments (NTFs), which are highly polarized, thread-like structures.
Much remains unknown about these thread-like structures, such as how they were formed and why they only appear in the GC.
Recent 1 GHz observations of the GC using MeerKAT have identified several multi-stranded NTFs throughout the GC region.
These multi-stranded NTFs contrast with the previously studied NTFs that contain only one or a few filaments (single-stranded NTFs).
One key question is whether the multi-stranded and single-stranded NTFs were formed in different ways.
For my dissertation I study the multi-stranded NTFs to determine whether there are any systematic differences between the single- and multi-stranded NTF population.
I begin with a targeted study of the most prominent multi-stranded NTF, known as the Radio Arc.
This study used the Australia Telescope Compact Array interferometer to study the Radio Arc over a wide frequency range (4 - 12 GHz).
I then discuss a Very Large Array study of several multi-stranded NTFs observed from 4 - 12 GHz, beginning with their total intensity properties such as their morphologies and spectral indices.
I then analyze the polarimetric and magnetic field properties of these structures.
From these studies I find that the multi-stranded NTFs were likely formed in the same way as the single-stranded NTFs.

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