Regular Article - Theoretical Physics
Impact of LIGO-Virgo black hole binaries on gravitational wave background searches
Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093, Warsaw, Poland
2 Institut de Fisica d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain
Accepted: 12 February 2023
Published online: 22 February 2023
We study the impact of the black hole binary population currently probed by LIGO-Virgo on future searches for the primordial gravitational wave background. We estimate the foreground generated by the binaries using the observed event rate and a simple modeling of the black hole population. We subtract individually resolvable binaries from the foreground and utilize Fisher analysis to derive sensitivity curves for power-law signals including these astrophysical foregrounds. Even with optimistic assumptions, we find that the reach of future experiments will be severely reduced.
© The Author(s) 2023
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