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arXiv · 1908.04600

Cosmic ray ensembles from ultra-high energy photons propagating in the galactic and intergalactic space

Niraj Dhital·Oleksandr Sushchov·Jan Pekala·Kevin Almeida Cheminant·Dariusz Góra·Piotr Homola·Alan R. Duffy·Paweł Jagoda·Robert Kaminski·Marcin Kasztelan·Peter Kovacs·Vahab Nazari·Michał Niedźwiecki·Katarzyna Smelcerz·Karel Smolek·Krzysztof Rzecki·Jilberto Zamora-Saa·Zoltán Zimborás
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Abstract

Propagation of ultra-high energy photons in the galactic and intergalactic space gives rise to cascades comprising thousands of photons. Using Monte Carlo simulations, we investigate the development of such cascades in the solar magnetosphere, and find that the photons in the cascades are distributed over hundreds of kilometers as they arrive at the top of the Earth's atmosphere. We also perform similar study for cascades starting as far as 10 Mpc away from us using relevant magnetic field models. A few photons correlated in time are expected to arrive at the Earth from the latter type of cascade. We present our simulation results and discuss the prospects for detection of these cascades with the Cosmic-Ray Extremely Distributed Observatory.

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Niraj Dhital, Oleksandr Sushchov, Jan Pekala, Kevin Almeida Cheminant, Dariusz Góra, Piotr Homola, Alan R. Duffy, Paweł Jagoda, Robert Kaminski, Marcin Kasztelan, Peter Kovacs, Vahab Nazari, Michał Niedźwiecki, Katarzyna Smelcerz, Karel Smolek, Krzysztof Rzecki, Jilberto Zamora-Saa, Zoltán Zimborás. 2019-08-13. Cosmic ray ensembles from ultra-high energy photons propagating in the galactic and intergalactic space. https://arxiv.org/abs/1908.04600

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