511 keV line 1cosmic photon background 1cosmological redshift evolution 1galactic center 1gamma-ray astronomy 1gamma-ray background 1inverse Compton scattering 1pair production 1positron annihilation 1positron production 1stellar flares 1
From the 2 of 2 linked papers with an AI index.
2 papers
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.GA2026
Stellar flares cannot explain the Galactic 511 keV emission
Saurabh Mittal, Thomas Siegert, Francesca Calore +12
The authors assess whether stellar flares can produce enough positrons to explain the Milky Way’s 511 keV annihilation line and conclude that flares fall short by several orders of…