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The Binary Black Hole Merger Rate Deviates from the Cosmic Star Formation Rate: A Tug of War between Metallicity and Delay Times

  • Authors: Adam P. Boesky, Floor S. Broekgaarden, Edo Berger

Adam P. Boesky et al 2024 The Astrophysical Journal 976 .

  • Provider: AAS Journals

Caption: Figure 2.

Same as Figure 1, but for the BBH formation rate (formation is defined as the moment when the second BH forms). The peak of the BBH formation rate is clearly shifted to higher redshifts than the SFRD due to a higher BBH formation efficiency at lower metallicities.

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