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Pulsar timing constraints on the Fermi massive black hole binary blazar population
2018
Monthly Notices of the Royal Astronomical Society: Letters
Blazars are a sub-population of quasars whose jets are nearly aligned with the line-of-sight, which tend to exhibit multi-wavelength variability on a variety of timescales. Quasi-periodic variability on year-like timescales has been detected in a number of bright sources, and has been connected to the orbital motion of a putative massive black hole binary. If this were indeed the case, those blazar binaries would contribute to the nanohertz gravitational-wave stochastic background. We test the
doi:10.1093/mnrasl/sly158
fatcat:uvaseshvsfajln4czhubuij5z4