First detection of mHz QPOs in 1A 0535+262 below 27 keV with frequencies evolving from 41 to 93 mHz, mostly hard lags, and double-peaked high-energy structure near outburst peak, interpreted as linked to soft-photon source and Comptonizing outflow evolution.
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4 Pith papers cite this work, alongside 646 external citations. Polarity classification is still indexing.
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Detection of a persistent ~433-day optical QPO in blazar 3C 454.3 at 2.53σ significance using Lomb-Scargle, WWZ, and PDM methods, with a new test for seasonal gaps.
Viscous shock oscillations in transonic flows around spinning black holes yield QPO frequency ranges that broaden with increasing spin and match observations in black hole X-ray binaries.
AstroSat observation of MAXI J1535-571 reveals a tight correlation between QPO centroid frequency (1.7-3.0 Hz) and power-law index Gamma while flux increases linearly.
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QPOs from the Viscous Transonic Accretion Flow Around a Spinning Black Hole
Viscous shock oscillations in transonic flows around spinning black holes yield QPO frequency ranges that broaden with increasing spin and match observations in black hole X-ray binaries.