3 papers
astro-ph.EP2026
The Arc in the DX Cha Circumbinary System: Evidence For a Retrograde Circumbinary Disk
Cheng Chen, Daniela Paz Iglesias, James M. Miley +1
Observations of the binary system DX Cha (HD 104237) reveal a compact, asymmetric ring structure with a radius of 0.43\,au. This ring is just outside the binary orbit, which has se…
astro-ph.EP2026
On the orbital evolution of binaries with polar circumbinary disks
Cheng Chen, Philip J. Armitage, C. J. Nixon
Binaries occur in many astrophysical systems, from young protostellar binaries in star forming regions to supermassive black hole binaries in galaxy centers. In many cases, a circu…
astro-ph.SR2025
Minimising the numerical viscosity in Smoothed Particle Hydrodynamics simulations of discs
Cheng Chen, C. J. Nixon
Simulations using the Smoothed Particle Hydrodynamics (SPH) technique typically include numerical viscosity to model shocks and maintain particle order on the kernel scale. This nu…