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Permanent link (DOI): https://doi.org/10.7939/R3HD7P665

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Statistical Methods To Study Turbulence In The Magnetized Interstellar Medium Open Access

Descriptions

Other title
Subject/Keyword
Interstellar Medium
Magnetic Field
Turbulence
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Kandel, Dinesh
Supervisor and department
Pogosyan, Dmitri (Physics)
Examining committee member and department
Sydora, Richard (Physics)
Pogosyan, Dmitri (Physics)
Rosolowsky, Erik (Physics)
Heinke, Craig (Physics)
Department
Department of Physics
Specialization

Date accepted
2017-09-11T16:03:13Z
Graduation date
2017-11:Fall 2017
Degree
Master of Science
Degree level
Master's
Abstract
It has been well known that turbulent motions are ubiquitous in the interstellar medium. These motions are very important in governing various astrophysical processes like star formation. Both observational and numerical studies are important to understand turbulent motions, and a gap between these two studies exists. To bridge this gap, various statistical techniques have been developed. These techniques so far have assumed isotropy and homogeneity in space. While this assumption is good in the absence of magnetic fields, isotropy is broken in the presence of magnetic field as the direction of magnetic field breaks the symmetry in space. In this thesis, we have developed an extension to current statistical techniques, which use intensity maps, such as velocity channel analysis and velocity centroids, to study turbulence anisotropy, and have discussed how statistical anisotropy of intensity maps can be used to study media magnetization, and separate different fundamental MHD modes: Alfven, fast and slow modes.
Language
English
DOI
doi:10.7939/R3HD7P665
Rights
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
Citation for previous publication
Kandel, Dinesh, Alex Lazarian, and Dmitri Pogosyan. "Extending velocity channel analysis for studying turbulence anisotropies." Monthly Notices of the Royal Astronomical Society 461.2 (2016): 1227-1259.Kandel, D., A. Lazarian, and D. Pogosyan. "Study of velocity centroids based on the theory of fluctuations in position–position–velocity space." Monthly Notices of the Royal Astronomical Society 464.3 (2016): 3617-3635.

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