Strongly Lensed Supermassive Black Hole Binaries as Nanohertz Gravitational-wave Sources by Nicole M. Khusid, Chiara M. F. Mingarelli, Priyamvada Natarajan, J. Andrew Casey-Clyde, Anna Barnacka

“…Supermassive black hole binary systems (SMBHBs) should be the most powerful sources of gravitational waves (GWs) in the universe. Once pulsar timing arrays (PTAs) detect the stochastic GW background from their cosmic merger history, searching for individually resolvable binaries will take on new importance. …”
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The variability of radio pulsars by Brook, P

“…</p> <p>We are hoping that pulsar timing arrays will detect gravitational radiation in the coming decade, but this depends, in part, on our ability to understand and mitigate the effects of the unmodelled intrinsic instabilities that we are observing. …”