Extended Data Fig. 2: Probability plot to visually assess whether the power values in the PDS continuum are χ2 distributed. | Nature Astronomy

Extended Data Fig. 2: Probability plot to visually assess whether the power values in the PDS continuum are χ2 distributed.

From: Evidence for a compact object in the aftermath of the extragalactic transient AT2018cow

Extended Data Fig. 2

This is a qualitative assessment tool that tells us that if the data points lie on a straight line, as they do, they appear consistent with the theorized model, which in the present case is a χ2 distribution with 2 × 105 × 2048 degrees of freedom (see section Probability plot: a qualitative assessment of noise for more details).

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