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2011•Journal of Yunnan Normal UniversityRequires access

The Optical Variability Periodicity Analysis of BL Lac Object S5 0716+714 Based on Periodogram Estimation

Jie Tang

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Abstract

Based on optical observation data for the I、R、V bands of BL Lacertae object S5 0716+714 during 1994 to 2008.some significant periods of S5 0716+714 light variation are obtained by means of the Periodogram analysis and Welch's Periodogram analysis.There exist two major periods.One is about 3.33 years for all bands.Another is about 2.60 years for all bands.These results are good agreement with the results found by Raiteri et al.Periodogram is effective to obtain periods of the time series of data.

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Based on optical observation data for the I、R、V bands of BL Lacertae object S5 0716+714 during 1994 to 2008.some significant periods of S5 0716+714 light variation are obtained by means of the Periodogram analysis and Welch's Periodogram analysis.There exist two major periods.One is about 3.33 years for all bands.Another is about 2.60 years for all bands.These results are good agreement with the results found by Raiteri et al.Periodogram is effective to obtain periods of the time series of data.

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Available abstract

Based on optical observation data for the I、R、V bands of BL Lacertae object S5 0716+714 during 1994 to 2008.some significant periods of S5 0716+714 light variation are obtained by means of the Periodogram analysis and Welch's Periodogram analysis.There exist two major periods.One is about 3.33 years for all bands.Another is about 2.60 years for all bands.These results are good agreement with the results found by Raiteri et al.Periodogram is effective to obtain periods of the time series of data.

Key concepts: Periodogram, BL Lac object, Physics, Mathematics, Blazar, Astrophysics, Statistics, Gamma ray

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