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Sponsored AI Networking Cookbook: Practical recipes for AI-assisted network automation and development AI Networking Cookbook: Practical recipes for AI-assisted network automation and development

Author

Zong-Kuan Guo

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Preprint Oct 2026

The pseudospectrum for gravitational perturbations in Kerr spacetimes

We study the pseudospectrum of the Kerr black hole for gravitational perturbations with spin weight $s=2$, the case of greatest interest in gravitational-wave astronomy. In the hyperboloidal framework with two-dimensional Chebyshev collocation, we formulate the quasinormal mode problem as a non-self-adjoint eigenvalue...

Hong-Sheng Zhang, Zong-Kuan Guo, Rong-Gen Cai · 0 citations
Preprint Sep 2026

Second-order multipole response of two nearby incoherent sources in wave-optical imaging of a Schwarzschild black hole

We study wave-optical imaging of two nearby, mutually incoherent point sources by a Schwarzschild black hole. Using the spherical-harmonic addition theorem, we construct partial-wave fields for arbitrary source directions and form images through a finite-aperture Fourier transform. To isolate the binary structure, we c...

Wen-Fu Cao, Hong-Sheng Zhang, Zong-Kuan Guo et al. · 0 citations

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