Targeted PTA searches for CWs from 114 AGN in NANOGrav 15 yr data yield no detections, factor-of-two tighter limits than all-sky searches, and updated constraints ruling out part of the parameter space for a binary in 3C 66B.
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SKAO forecasts show that planned observations will improve SGWB anisotropy constraints but remain insufficient to detect the kinematic dipole even in joint PTA-astrometry analyses.
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The NANOGrav 15 yr Data Set: Targeted Searches for Supermassive Black Hole Binaries
Targeted PTA searches for CWs from 114 AGN in NANOGrav 15 yr data yield no detections, factor-of-two tighter limits than all-sky searches, and updated constraints ruling out part of the parameter space for a binary in 3C 66B.
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Probing Kinematic Anisotropies in the Stochastic Gravitational Wave Background with the SKA
SKAO forecasts show that planned observations will improve SGWB anisotropy constraints but remain insufficient to detect the kinematic dipole even in joint PTA-astrometry analyses.