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- W4387399900 abstract "Compressible, Riemann S-type ellipsoids can emit gravitational waves (GWs) with a chirp-like behavior (hereafter chirping ellipsoids, CELs). We show that the GW frequency-amplitude evolution of CELs (mass $sim 1$~M$_odot$, radius $sim10^3$~km, polytropic equation of state with index $napprox 3$) is indistinguishable from that emitted by double white dwarfs (DWDs) and by extreme mass-ratio inspirals (EMRIs) composed of an intermediate-mass (e.g.~$10^3~M_odot$) black hole and a planet-like (e.g.~$10^{-4}~M_odot$) companion, in a specific frequency interval within the detector sensitivity band in which the GWs of all these systems are quasi-monochromatic. We estimate that for reasonable astrophysical assumptions, the rates in the local Universe of CELs, DWDs and EMRIs in the mass range considered here, are very similar, posing a detection-degeneracy challenge for space-based GW detectors. The astrophysical implications of this CEL-binary detection degeneracy by space-based GW-detection facilities, are outlined." @default.
- W4387399900 created "2023-10-07" @default.
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- W4387399900 date "2023-10-01" @default.
- W4387399900 modified "2023-10-18" @default.
- W4387399900 title "Chirping compact stars: gravitational radiation and detection degeneracy with binaries" @default.
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- W4387399900 doi "https://doi.org/10.1088/1475-7516/2023/10/017" @default.
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