News FocusAstronomy

Gamma Ray Bursts: New Cosmic Rulers?

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Science  08 Oct 2004:
Vol. 306, Issue 5694, pp. 215
DOI: 10.1126/science.306.5694.215

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Peak frequencies of energy and total energy are tightly correlated for gamma ray bursts, which some astronomers say could make them "new rulers to measure the universe."