The mHz QPO in 1ES 1927+654 has persisted and stabilized at ~2.5 mHz with stable soft lags, no strong harmonic, and repeatable large-amplitude flux patterns, also seen in NuSTAR.
Title resolution pending
6 Pith papers cite this work. Polarity classification is still indexing.
representative citing papers
Cold compact circumbinary rings evolve into highly eccentric disks with suppressed accretion and dominant variability at ~0.1 times the binary orbital frequency via a stream impact mechanism.
A criterion of |Δg| > 0.4 mag and |Δ(g-r)| > 0.2 mag detects photometric CL-AGN transitions in 9.6% of known hosts with 1.6% false positive rate from simulations.
High-resolution GRMHD simulations show that tearing of tilted accretion disks around rapidly spinning supermassive black holes drives order-of-magnitude variability in continuum and broad-line luminosities on months-to-years timescales, explaining changing-look AGN.
Turbulent torques modeled as a Gaussian around the linear torque can push gas-induced dephasing in LISA EMRIs above the detection threshold for Eddington ratios above 0.3 and sufficient turbulence strength.
Multi-mission O-C data on eRO-QPE2 reveal hierarchical super-periods consistent with apsidal precession at a~140 Rg but no robust EMRI solution due to sparse sampling and narrow likelihood peaks.
citing papers explorer
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Persistence of the Millihertz X-ray Quasi-Periodic Oscillation in the Active Galactic Nucleus 1ES 1927+654
The mHz QPO in 1ES 1927+654 has persisted and stabilized at ~2.5 mHz with stable soft lags, no strong harmonic, and repeatable large-amplitude flux patterns, also seen in NuSTAR.
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Eccentric Disks from Gaseous Rings around Equal-Mass, Circular Binaries
Cold compact circumbinary rings evolve into highly eccentric disks with suppressed accretion and dominant variability at ~0.1 times the binary orbital frequency via a stream impact mechanism.
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Identifying Changing-Look AGN Transitions in Light Curve Data with the Zwicky Transient Facility
A criterion of |Δg| > 0.4 mag and |Δ(g-r)| > 0.2 mag detects photometric CL-AGN transitions in 9.6% of known hosts with 1.6% false positive rate from simulations.
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Changing-Look AGN Powered By Disk Tearing
High-resolution GRMHD simulations show that tearing of tilted accretion disks around rapidly spinning supermassive black holes drives order-of-magnitude variability in continuum and broad-line luminosities on months-to-years timescales, explaining changing-look AGN.
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Chaotic migration of LISA Extreme Mass Ratio Inspirals in a turbulent accretion disk: effect on waveform de-phasing
Turbulent torques modeled as a Gaussian around the linear torque can push gas-induced dephasing in LISA EMRIs above the detection threshold for Eddington ratios above 0.3 and sufficient turbulence strength.
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Even a precessing clock is right twice per orbit -- The super-periods of eRO-QPE2 and challenges for quasi-periodic eruption orbital models
Multi-mission O-C data on eRO-QPE2 reveal hierarchical super-periods consistent with apsidal precession at a~140 Rg but no robust EMRI solution due to sparse sampling and narrow likelihood peaks.