Search for new physics in the intergalactic medium

by Kyrylo Bondarenko (Nordita)

Wednesday 15 Nov 2023, 13:30 → 14:30 Europe/Stockholm

Albano 3: 6228 - Mega (22 seats) (Albano Building 3)

Most of the volume of the Universe is comprised of the Intergalactic Medium (IGM), which constitutes the space between condensed structures such as galaxies and galaxy clusters. Photons and charged particles originating from beyond our galaxy traverse the Universe, spending a significant portion of their journey within the IGM, making their behavior susceptible to its characteristics. In this talk, I will illustrate several instances where we can explore fundamental physics through the interaction between particles and the IGM. These instances encompass the imposition of constraints on new light feebly interacting particles like dark photons and axions through resonant conversion with photons, the measurement of the intergalactic magnetic field, and its impact on Faraday rotation measure, as well as the study of the propagation of ultrahigh-energy cosmic rays and gamma-rays.

Bondarenko_2023-11-15.mp4