First detection of QPOs above 250 keV in Swift J1727.8-1613 with up to 8.9 sigma significance, showing decreasing rms and increasing soft lags that suggest a geometric origin from small-scale jet precession.
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Type-C QPOs in Swift J1727.8-1613 exhibit energy-dependent rms-frequency relations with a common break at 4 Hz, indicating a change in accretion geometry.
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Search for the Highest-energy Quasiperiodic Oscillation in the Black Hole X-Ray Binary Candidate Swift J1727.8-1613
First detection of QPOs above 250 keV in Swift J1727.8-1613 with up to 8.9 sigma significance, showing decreasing rms and increasing soft lags that suggest a geometric origin from small-scale jet precession.
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An Insight-HXMT View of the Evolution of the Type-C Quasiperiodic Oscillation during the Flaring State of Swift J1727.8-1613
Type-C QPOs in Swift J1727.8-1613 exhibit energy-dependent rms-frequency relations with a common break at 4 Hz, indicating a change in accretion geometry.