Simulation of the isotropic ultra-high energy photons flux in the solar magnetic field and a comparison with observations made by the HAWC and Fermi-LAT observatories

Abstract

In this contribution we study the possibility of the formation of cosmic ray ensembles (CRE) created by the interaction of ultra-high energy (UHE) photons with the magnetic field of the Sun. The lack of observation of those UHE and the difficulties for their identification given the current methodologies motivates this study. We performed simulations using the PRESHOWER program in order to simulate the expected extensive air showers which might be spatially correlated generated upon entering the Earth's atmosphere. We found characteristic features like very thing and extremely elongates cascades of secondary photons with their corresponding energies spanning the entire cosmic range spectrum. Shower footprints are as large as hundreds of kilometres. An application of this study is the scenario of gamma-ray emission from the vicinity of the Sun as a result of ultra-high energy photon cascading in the solar magnetic field in order to understand recent observations made by the HAWC and Fermi-LAT observatories.

arXiv comment8 pages, 4 figures, 38th International Cosmic Ray Conference (ICRC2023) 26 July - 3 August, 2023 Nagoya, Japan

References in corpus (6)

• Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun
• Simulation of Ultra-High Energy Photon Propagation in the Geomagnetic Field
• Evidence for a New Component of High-Energy Solar Gamma-Ray Production
• First HAWC Observations of the Sun Constrain Steady TeV Gamma-Ray Emission
• Cosmic ray ensembles as signatures of ultra-high energy photons interacting with the solar magnetic field
• Simulation of the isotropic ultra-high energy photons flux in the solar magnetic field