Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023019456> ?p ?o ?g. }
- W2023019456 abstract "Recent years have seen a burgeoning interest in using pulsar timing arrays (PTAs) as gravitational-wave (GW) detectors. To date, that interest has focused mainly on three particularly promising source types: supermassive black hole binaries, cosmic strings, and the stochastic background from early-Universe phase transitions. In this paper, by contrast, our aim is to investigate the PTA potential for discovering unanticipated sources. We derive significant constraints on the available discovery space based solely on energetic and statistical considerations: we show that a PTA detection of GWs at frequencies above $ensuremath{sim}{10}^{ensuremath{-}5}text{ }text{ }mathrm{Hz}$ would either be an extraordinary coincidence or violate ``cherished beliefs;'' we show that for PTAs GW memory can be more detectable than direct GWs, and that, as we consider events at ever higher redshift, the memory effect increasingly dominates an event's total signal-to-noise ratio. The paper includes also a simple analysis of the effects of pulsar red noise in PTA searches, and a demonstration that the effects of periodic GWs in the $ensuremath{sim}{10}^{ensuremath{-}7}--{10}^{ensuremath{-}4.5}text{ }text{ }mathrm{Hz}$ band would not be degenerate with small errors in standard pulsar parameters (except in a few narrow bands)." @default.
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- W2023019456 date "2014-02-18" @default.
- W2023019456 modified "2023-10-14" @default.
- W2023019456 title "The gravitational-wave discovery space of pulsar timing arrays" @default.
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- W2023019456 doi "https://doi.org/10.1103/physrevd.89.042003" @default.
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