A Statistical Study of Hard X-Ray Solar Flares

The results of a statistical study of hard x-ray solar flares are presented in this dissertation. Two methods of analysis were used, the Diffusion Entropy (DE) method coupled with an analysis of the data distributions and the Rescaled Range (R/S) Method, sometimes referred to as "Hurst's method". Chapter one provides an introduction to hard x-ray flares within the context of the solar environment and a summary of the statistical paradigms solar astronomers currently work under. Chapter two presents the theory behind the DE and R/S methods. Chapter three presents the results of the two analysis methodologies: most notably important evidence of the conflicting results of the R/S and DE methods, evidence of a Levy statistical signature for the underlying dynamics of the hard x-ray flaring process and a possible separate memory signature for the waiting times. In addition, the stationary and nonstationary characteristics of the waiting times and peak intensities, are revealed. Chapter four provides a concise summary and discussion of the results.

Grantor dc:publisher

University of North Texas

Year dc:date

2001

Author dc:creator

• Leddon, Deborah L.

Contributors dc:contributor

• Grigolini, Paolo
• West, Bruce J.
• Deering, William D.
• Fanelli, Michael
• Roberts, James A.
• Matteson, Samuel E.

• X-ray astronomy.
• Solar flares.
• complexity
• waiting times
• hard x-ray solar flares
• solar environment
• nonlinear time series analysis

Statement dc:rights

• Public
• Copyright
• Leddon, Deborah L.
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 51931648
https://digital.library.unt.edu/ark:/67531/metadc3045/
ark: ark:/67531/metadc3045

OAI identifier oai:identifier

info:ark/67531/metadc3045