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Loeb, Abraham
Research notes of the AAS, 04/2022, Letnik: 6, Številka: 4Journal Article
Abstract I show that General Relativity sets an absolute upper limit on the energy flux observed from a cosmological source as a function of its redshift. Detecting a brighter source in gravitational waves, neutrinos or light, would flag new physics. The derived flux limit can also be used to determine the maximum redshift possible for any source with an unknown origin.
