HAL (France)
open access
Gravitational-wave Measurement of the M BH – M bulge Intrinsic Scatter at High Redshift
Abstract The observed gravitational-wave background (GWB) spectrum is higher in amplitude than model predictions by a factor of 2–3. Using a semi-analytic model, we evaluate the effect of a high-scatter supermassive black hole (SMBH) scaling relation ( M BH – M bulge ) on models of the nanohertz GWB
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