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

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      https://www.ias.ac.in/article/fulltext/joaa/035/03/0275-0277

    • Keywords

       

      Black hole physics: star: binary; X-rays: individuals: Cyg X-1.

    • 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.

    • Author Affiliations

       

      Ai-Jun Dong1 2 Yan-Ke Tang3 Ning Gai3

      1. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
      2. Mechanical and Electronic Engineering Department, Chuzhou University, Chuzhou 239000, China.
      3. Physics Department, Dezhou University, Dezhou 253000, China.
    • Dates

       
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