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Light Curve Periodic Variability of Cyg X-1 using Jurkevich Method

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Abstract

The Jurkevich method is a useful method to explore periodicity in the unevenly sampled observational data. In this work, we adopted the method to the light curve of Cyg X-1 from 1996 to 2012, and found that there is an interesting period of 370 days, which appears in both low/hard and high/soft states. That period may be correlated with black hole physics and accretion disk geometry.

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Acknowledgement

This work was supported by the NSFC (11203006,11303003), Shandong Provincial Natural Science Foundation, China (ZR2012AQ029, ZR2013AM002), Anhui Provincial higher education institution Natural Science Foundation (2011KJZ272) and Chuzhou University grants (2012jyy013, 2013RC008).

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Authors and Affiliations

  1. School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China

    Ai-Jun Dong

  2. Mechanical and Electronic Engineering Department, Chuzhou University, Chuzhou, 239000, China

    Ai-Jun Dong

  3. Physics Department, Dezhou University, Dezhou, 253000, China

    Yan-Ke Tang & Ning Gai

Authors
  1. Ai-Jun Dong
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  2. Yan-Ke Tang
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  3. Ning Gai
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Correspondence to Ai-Jun Dong.

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Dong, AJ., Tang, YK. & Gai, N. Light Curve Periodic Variability of Cyg X-1 using Jurkevich Method. J Astrophys Astron 35, 275–277 (2014). https://doi.org/10.1007/s12036-014-9211-2

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  • DOI: https://doi.org/10.1007/s12036-014-9211-2

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