Probing massive black hole binary populations with LISA

Michael L. Katz*, Luke Zoltan Kelley, Fani Dosopoulou, Samantha Berry, Laura Blecha, Shane L. Larson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

ESA and NASA are moving forward with plans to launch Laser Interferometer Space Antenna (LISA) around 2034. With data from the Illustris cosmological simulation, we provide analysis of LISA detection rates accompanied by characterization of the merging massive black hole (MBH) population. MBHs of total mass ∼105-1010M are the focus of this study. We evolve Illustris MBH mergers, which form at separations of the order of the simulation resolution (∼kpc scales), through coalescence with two different treatments for the binary MBH evolutionary process. The coalescence times of the population, as well as physical properties of the black holes, form a statistical basis for each evolutionary treatment. From these bases, we Monte Carlo synthesize many realizations of the merging MBH population to build mock LISA detection catalogues. We analyse how our MBH binary evolutionary models affect detection rates and the associated parameter distributions measured by LISA. With our models, we find MBH binary detection rates with LISA of ∼0.5-1 yr-1 for MBHs with masses greater than 105M. This should be treated as a lower limit primarily because our MBH hole sample does not include masses below 105 M, which may significantly add to the observed rate. We suggest reasons why we predict lower detection rates compared to much of the literature.

Original languageEnglish (US)
Pages (from-to)2301-2317
Number of pages17
JournalMonthly Notices of the Royal Astronomical Society
Volume491
Issue number2
DOIs
StatePublished - Jan 1 2020

Keywords

  • Gravitational waves

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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