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X‐Ray Spectral Evolution of the Crab Pulse

  • Authors: Steven H. Pravdo, Lorella Angelini, and Alice K. Harding

Pravdo, Angelini, & Harding 1997 The Astrophysical Journal 491 808.

  • Provider: AAS Journals

Caption: Fig. 6.

Chi squared per degree of freedom for the PCA data in 16 phase bins for single and broken power‐law models. The other nine phase bins are either nebular‐background or transition bins with too few net counts for useful spectroscopy.

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