3 papers
astro-ph.HE2026
A Boundary-Consistent Two-Zone Electron Kernel for Distant Pulsar Contributions to Positron Flux and Anisotropy
Yiwei Bao, Jie-Shuang Wang, Hao Zhou
We present a semi-analytical series solution for electron and positron propagation in a spherical two-zone diffusion model. The solution treats slow diffusion inside a near-source…
astro-ph.EP2026
Ring Spacing from a Fourth-Order Radial Feedback Green Function in a Keplerian Accretion Disk
Yiwei Bao, Can Cui
ALMA observations of protoplanetary disks reveal ubiquitous concentric ring structures whose origin remains debated. We present an exactly solvable local model for ring spacing in…
astro-ph.HE2025
Modeling the Saddle-like GeV-TeV Spectrum of HESS J1809-193: -Rays Arising from Reverse-Shocked Pulsar Wind Nebula?
Jiaxu Sun, Yang Chen, Yiwei Bao +2
Evolution of pulsar wind nebulae (PWNe) could be expected to leave imprints in -rays. We suggest that intriguing GeV-TeV spectral energy distribution (SED) of HESS J1809193 a…