2 papers
astro-ph.HE2026
Diffusive or Ballistic? Distributions and Spectra of PeV Cosmic Rays around Microquasars
Yutaka Fujita, Rohta Takahashi, Norita Kawanaka
In the standard Galactic cosmic-ray (CR) paradigm, protons are accelerated up to ~1 PeV by Galactic sources. While supernova remnants (SNRs) have been traditionally considered as t…
astro-ph.HE2025
Beyond Diffusion: A Causality-Preserving Model for Cosmic Ray Propagation
Norita Kawanaka, Rohta Takahashi
We propose a brand-new formalism for the propagation of relativistic cosmic ray (CR) particles. The propagation of CRs has often been described using the diffusion approximation, w…