Cosmic Ray Extremely Distributed Observatory

Abstract

The Cosmic Ray Extremely Distributed Observatory (CREDO) is a newly formed, global collaboration dedicated to observing and studying cosmic rays (CR) and cosmic ray ensembles (CRE): groups of a minimum of two CR with a common primary interaction vertex or the same parent particle. The CREDO program embraces testing known CR and CRE scenarios, and preparing to observe unexpected physics, it is also suitable for multi-messenger and multi-mission applications. Perfectly matched to CREDO capabilities, CRE could be formed both within classical models (e.g. as products of photon-photon interactions), and exotic scenarios (e.g. as results of decay of Super Heavy Dark Matter particles). Their fronts might be significantly extended in space and time, and they might include cosmic rays of energies spanning the whole cosmic ray energy spectrum, with a footprint composed of at least two extensive air showers with correlated arrival directions and arrival times. Since CRE are mostly expected to be spread over large areas and, because of the expected wide energy range of the contributing particles, CRE detection might only be feasible when using available cosmic ray infrastructure collectively, i.e. as a globally extended network of detectors. Thus, with this review article, the CREDO Collaboration invites the astroparticle physics community to actively join or to contribute to the research dedicated to CRE, and in particular to share any cosmic ray data useful for the specific CRE detection strategies.

59 pages, 23 figures

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Cited by in corpus (9)

• Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers
• Observation of large scale precursor correlations between cosmic rays and earthquakes
• On the energy budget of the transition of a neutron star into the third family branch
• Mysterious anomalies in Earth's atmosphere and strongly interacting Dark Matter
• Feasibility of Correlated Extensive Air Shower Detection with a Distributed Cosmic Ray Network
• Blazar jets as possible sources of ultra-high energy photons: a short review
• Simulation of the isotropic ultra-high energy photons flux in the solar magnetic field
• Studying the variation of fundamental constants at the Cosmic Ray Extremely Distributed Observatory
• gSeaGen code by KM3NeT: an efficient tool to propagate muons simulated with CORSIKA