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Wavelet Analysis in Blazar celestial light period Analysis Research

Author: DongFuTong
Tutor: ZhangXiong
School: Yunnan Normal University
Course: Astrophysics
Keywords: Blazar celestial Optical variable Long-period optical variable Wavelet Analysis Weighted wavelet Z-transform
CLC: P152
Type: Master's thesis
Year: 2009
Downloads: 59
Quote: 0
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Abstract


Blazar is active galactic nuclei (AGN) in a special nature of the sub-class , the light changed data showing rapid change and optical variable amplitude characteristics, optical variable study was loud Blazar properties of an important means for the understanding of its internal structure and radiation mechanisms and other issues are important. This paper discusses in detail the active galactic nuclei , in particular the nature of Blazar introduced three kinds of Blazar when the light changed and the subject of several major research method of long-period optical variable : Power spectral method , JK method , DACF and wavelet analysis Method . Wavelet analysis is only in recent years developed for time-frequency analysis method. With its excellent time-frequency localization and multi- resolution analysis of the function , wavelet analysis method favored by people from the outset , has been widely used in seismic and meteorological time series of periodic studies . In this paper, wavelet analysis and the development of the basic theory are described, and use this method to deal with a number of Blazar variable data, the results are discussed . At the same time due to the continuous wavelet transform shortcomings and presents a wavelet-based method for handling new astronomical data : weighted wavelet Z-transform (WWZ) and its application.

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CLC: > Astronomy,Earth Sciences > Astronomy > Stellar astronomy,galactic astronomy,cosmology > Stellar astronomy,galaxy astronomy
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