Graph-based summary statistics on pulsar timing residuals detect SGWB down to strain amplitude 1.2e-15 and yield 2.3 sigma evidence in NANOGrav 15-year data via clustering coefficient and edge weight measures.
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The spectral siren technique requires independent knowledge of binary black hole mass distributions at all redshifts to an accuracy better than the statistical uncertainty, or else the Hubble constant measurement is biased.
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Graph-based Summary Statistics for Revealing the Stochastic Gravitational Wave Background in Pulsar Timing Arrays
Graph-based summary statistics on pulsar timing residuals detect SGWB down to strain amplitude 1.2e-15 and yield 2.3 sigma evidence in NANOGrav 15-year data via clustering coefficient and edge weight measures.
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Blinded Mock Data Challenge: Is the Spectral Siren Technique Robust for Measuring the Hubble Constant?
The spectral siren technique requires independent knowledge of binary black hole mass distributions at all redshifts to an accuracy better than the statistical uncertainty, or else the Hubble constant measurement is biased.