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Preprint Sep 2026

Dense Dump Codec: Error-Controlled, Random-Access Compression of GRMHD Time Series for Slow-Light Radiative Transfer

Black-hole movies provide a unique venue to study the time evolution of accreting plasma. Modeling this evolution with slow-light radiative transfer requires closely spaced simulation outputs, because the plasma changes as light propagates through it. Saving these outputs in full is costly, whereas sparse sampling intr...

Ze-Lin Zhang, Zhen-Yu Zhang, Bin Chen · 0 citations
Preprint Sep 2026

KPolaris: GPU-accelerated Polarized Radiative Transfer in General Relativity

Polarized black-hole images carry information about both the magnetized plasma and the curved spacetime through which the radiation propagates. We present KPolaris, an open-source GPU-accelerated general-relativistic polarized radiative-transfer code built on the Kokkos framework. It supports analytic plasma models and...

Ze-Lin Zhang, Bin Chen · 0 citations

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