Corpus ID: 235446398

Using Mutual Information to measure Time-lags from non-linear processes in Astronomy

  title={Using Mutual Information to measure Time-lags from non-linear processes in Astronomy},
  author={N. Chakraborty and P. Leeuwen},
Measuring time lags between time-series or lighcurves at different wavelengths from a variable or transient source in astronomy is an essential probe of physical mechanisms causing multiwavelength variability. Time-lags are typically quantified using discrete correlation functions (DCF) which are appropriate for linear relationships. However, in variable sources like X-ray binaries, active galactic nuclei (AGN) and other accreting systems, the radiative processes and the resulting… Expand

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