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1+z=1.72±0.051+z=1.72\pm0.05

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The clearest illustration of why the ordering matters arrived while the paper was being finished. Roberto Iaria and collaborators reported, in data taken hours after a carbon superburst on the ultracompact binary 4U 1820-30, an absorption feature at 3.8±\pm0.05 keV, with a width and equivalent width consistent with a real spectral line rather than noise, at a significance the authors themselves describe across their observations as ranging from 2.5 to 8 sigma [ 10 ] . Interpreted as a gravitationally redshifted iron line, the feature implies 1+z=1.72±\pm0.05 , a compactness near 0.33, and — worked through the same exterior relation as any other neutron star — a mass of roughly 1.8 to 2.3 solar…

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1+z=1.72±0.051+z=1.72\pm0.05

Equation 27 · Crossed Fields

A Neutron Star Is a Redshift Standard

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.

The clearest illustration of why the ordering matters arrived while the paper was being finished. Roberto Iaria and collaborators reported, in data taken hours after a carbon superburst on the ultracompact binary 4U 1820-30, an absorption feature at 3.8±\pm0.05 keV, with a width and equivalent width consistent with a real spectral line rather than noise, at a significance the authors themselves describe across their observations as ranging from 2.5 to 8 sigma [ 10 ] . Interpreted as a gravitationally redshifted iron line, the feature implies 1+z=1.72±\pm0.05 , a compactness near 0.33, and — worked through the same exterior relation as any other neutron star — a mass of roughly 1.8 to 2.3 solar…

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