#gamma-ray background
topicgamma-ray background
2 papers · 1 filter
astro-ph.CO2026
Cosmological - Pair-Production Background
Mika A. Gelowicz, Thomas Siegert, Saurabh Mittal +10
The paper calculates how photons from the cosmic photon background interact with each other to produce electron‑positron pairs across cosmic time, and evaluates the resulting secon…
astro-ph.CO2026
Constraints on Annihilating Dark Matter from Gamma-Ray Background-Galaxy Shape Correlations: Model-independent Null Results and Moderate Template-based Signals
Masato Shirasaki, Deheng Song, Oscar Macias +2
The paper uses cross‑correlations between the unresolved gamma‑ray background measured by Fermi‑LAT and galaxy shape data from DES Y3 and DECADE to place limits on dark‑matter anni…