Distance Determination of Variable Galactic Sources

  • J. Hu
  • S. N. Zhang
  • T. P. Li
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 298)


We have developed a timing analysis method to determine the distances of variable galactic X-ray sources based on the method advanced by Trümper and Schönfelder in 1973. The light-curve of the halo produced by the scattering of X-rays off the interstellar dust is delayed and smeared by the dust grains. This method utilizes the differences between the power density spectra of the point source and the halo. We present the details of this method and our first applications of this method to the Chandra data of X-ray binary Cyg X-3.


X-ray source distance ISM scattering 


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Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • J. Hu
    • 1
  • S. N. Zhang
    • 1
    • 2
    • 3
    • 4
  • T. P. Li
    • 1
    • 4
  1. 1.Physics Department and Center for AstrophysicsTsinghua UniversityBeijingP.R. China
  2. 2.Physics DepartmentUniversity of Alabama in HuntsvilleHuntsvilleUSA
  3. 3.Space Science LaboratoryNASA Marshall Space Flight CenterHuntsvilleUSA
  4. 4.Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina

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