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Pulsar Timing Array Constraints on the Merger Timescale of Subparsec Supermassive Black Hole Binary Candidates

  • Authors: Khai Nguyen, Tamara Bogdanović, Jessie C. Runnoe, Stephen R. Taylor, Alberto Sesana, Michael Eracleous, and Steinn Sigurdsson

2020 The Astrophysical Journal Letters 900 L42.

  • Provider: AAS Journals

Caption: Figure 3.

Top row: PDFs for the GW strain amplitude, contributed by a population of inspiraling SMBHBs at a frequency f = 1 yr−1 (hc; left) and the average merger time for the same population (﹩\langle {t}_{\mathrm{evol}}\rangle ;﹩ right). Both refer to the model hc3, in which SMBHB masses are corrected for Malmquist bias. Bottom row: CDFs corresponding to the PDFs in the top row. Red lines mark the 95th and 5th percentile values of hc and ﹩\langle {t}_{\mathrm{evol}}\rangle ﹩, respectively.

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