arXiv subjects

A. N. Popov

Publications and source records attributed to A. N. Popov.

2 recordsLinked to original sources

arXiv2020

On the possibility of research the photon-photon interaction at the European X-ray Free Electron Laser -- European XFEL

The possibility of performing the experimental research in the field of fundamental physics based on the unique instrument -- European X-ray Free Electron Laser (E-XFEL) is considered in this paper. The calculations of the reaction $γ+ γ\to e^{+} + e^{-}$ cross section for gamma quanta with $E \sim~(1-100)\,\mbox{GeV}$ energy with X-ray photons are performed. The possibility of experimental registration of reaction $γ+ γ\to e^{+} + e^{-}$ product are reviewed. Also, the optical depth of the interaction between gamma-rays with the E-XFEL's photon pulses is estimated. Astrophysical applications are discussed.

hep-ex↗

arXiv2018

Absorption of Photons from Distant Gamma-Ray Sources

Being the largest gravitationally bound structures in the Universe, galaxy clusters are huge reservoirs of photons generated by the bremsstrahlung of a hot cluster gas. We consider the absorption of high-energy photons from distant cosmological gamma-ray sources by the bremsstrahlung of galaxy clusters. The magnitude of this effect is the third in order of smallness after the effects of absorption by the cosmic microwave background and absorption by the extragalactic background light. Our calculations of the effect of absorption by the bremsstrahlung of galaxy clusters have shown that this effect manifests itself in the energy range 1--100 GeV and can be $τ\sim 10^{-5}$.

astro-ph.HE↗