EPTA second data release reports Bayes factor of 60 for an isotropic nanohertz GWB in the 10.3-year subset, with amplitude (2.5±0.7)×10^{-15} at 1 yr^{-1} when spectral index is fixed at 13/3.
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Outliers from the black hole-stellar mass scaling relation arise from distinct channels of enhanced mergers with super-Eddington growth, gravitational recoils after mergers, environmental stellar mass loss, and quiescent histories.
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The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
EPTA second data release reports Bayes factor of 60 for an isotropic nanohertz GWB in the 10.3-year subset, with amplitude (2.5±0.7)×10^{-15} at 1 yr^{-1} when spectral index is fixed at 13/3.
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Overmassive and Undermassive Massive Black Holes: The Role of Environment and Gravitational-Wave Recoils
Outliers from the black hole-stellar mass scaling relation arise from distinct channels of enhanced mergers with super-Eddington growth, gravitational recoils after mergers, environmental stellar mass loss, and quiescent histories.