Cosmological gamma - gamma Pair-Production Background

arXiv:2607.14276 · astro-ph.CO, astro-ph.HE · Submitted 2026-07-15 · Read on arXiv

Mika A. Gelowicz, Thomas Siegert, Saurabh Mittal, Laura Eisenberger, Dimitris Tsatsis, Niklas C. Bauer, Rudi Reinhardt, Patrik Ehrmann, Manja L. Zimmerer, Hiroki Yoneda, Tomohiko Oka, Tristan Bouchet, Manuel R. H. W. Skalka

astro-ph.CO, astro-ph.HE

Submitted: 2026-07-15

Comments: 11 pages, 10 figures, 2 tables, accepted by A&A

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• AGN — 9× in this paper · explained in 1 episode
• Cosmic Gamma-Ray Background — 4× in this paper
• Cosmic Photon Background — 4× in this paper
• Accuracy — 3× in this paper · explained in 1 episode
• Abundance — 2× in this paper · explained in 1 episode
• Cosmic Microwave Background — 2× in this paper
• Cosmic Optical Background — 2× in this paper
• Cosmic Ultraviolet Background — 2× in this paper
• Loss Function — 2× in this paper · explained in 2 episodes
• Cosmic Infrared Background — 1× in this paper
• Cosmic Radio Background — 1× in this paper
• Cosmic X-Ray Background — 1× in this paper
• Star Formation Rate (SFR) — 1× in this paper · explained in 5 episodes
• Very High Energies — 1× in this paper

Sources

• Updated Constraints on the Injection Energy of Positrons Generating the Galactic 511 keV gamma-ray line
• Distance measures in cosmology

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