Author

Xiang-Qian Li

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Preprint Oct 2026

Finite-Distance Imaging of Relativistic Equilibrium Tori around Genuine Kerr--Bertotti--Robinson Black Holes

We calculate finite-distance images of stationary, pressure-supported tori around genuine, electrically neutral Kerr--Bertotti--Robinson black holes using general relativistic ray tracing with gray emission and absorption. The emitting volume is bounded by a constant-specific-angular-momentum equilibrium free surface,...

Hao-Peng Yan, Xiang-Qian Li, Xiao-Jun Yue · 0 citations

Open access Oct 2026

Infrared consistency of scalar–tensor induced gravitational waves

The interpretation of gravitational-wave spectra generated beyond linear order depends on how infrared metric perturbations are separated from genuine radiative production. We study this question in the scalar–tensor channel of cosmological induced gravitational waves, where a long scalar perturbation with momentum q c...

Yan Han, Xiang-Qian Li · Classical and quantum gravit... · 0 citations