The GPSP Atlas: High-resolution Galactic Photon Survival Probability Atlas for Very-High- and Ultra-High-Energy Gamma-Ray Astronomy

arXiv:2608.24862 · astro-ph.HE · Submitted 2026-08-25 · Read on arXiv

astro-ph.HE

Submitted: 2026-08-25

Updated: 2026-08-25

Project page: https://gpsp-atlas.readthedocs.io

Terminology

• Galactic Photon Survival Probability — 5× in this paper
• Anisotropy — 4× in this paper · explained in 3 episodes
• Spectral Signature — 2× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Flexible Image Transport System — 1× in this paper
• Monte Carlo — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes

Sources

• Cygnus X-3: A variable petaelectronvolt gamma-ray source
• Cygnus X-3 as a PeVatron and the LHAASO 2025 data
• Science Prospects for the Southern Wide-field Gamma-ray Observatory: SWGO
• The counterjet dominates the production of PeV photons from Cyg X-3

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