BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:The Cosmic Ray Extremely Distributed Observatory (CREDO) DTSTART:20230503T170000Z DTEND:20230503T190000Z DTSTAMP:20260625T155256Z UID:a2edfcf7-73f7-4ac5-b967-0e011f43d414 SEQUENCE:1 CREATED:20230502T083737Z DESCRIPTION: The Cosmic Ray Extremely Distributed Observatory (CREDO) is a recently formed\,global collaboration dedicated to observing and studying cosmic ray ensembles (CRE):groups of minimum two cosmic rays with common primary interaction vertex or thesame mother particle. The CREDO program e mbraces testing the known CRE scenarios\,and getting ready to observe the unexpected physics\, it is also suitable for multimessenger and multi-miss ion applications. CRE could be formed both within classicalmodels (e.g. as products of photon-photon interactions)\, and exotic scenarios (e.g. asre sults of decay of Super Heavy Dark Matter particles and subsequent interac tions\, Lorentz invariance violation)\, their fronts might be significantl y extended in space andtime\, and they might include cosmic rays of energi es spanning the whole cosmic rayenergy spectrum. CRE are expected to be pa rtially observable on Earth even if theinitiating interaction or process o ccurs as far as ~1 Gpc away\, with a footprintcomposed of at least two ext ensive air showers with parallel arrival directions andcorrelated arrival times. Since CRE are mostly expected to be spread over large areas over hu ndreds ofkilometers or more\, and because of the expected wide energy rang e of thecontributing particles\, CRE detection might only be feasible when using the availablecosmic ray infrastructure collectively\, i.e. as a glo bally extended network of detectors.CREDO is perfectly suited for probing the variation of fundamental constants in theaforementioned physical proce sses as well as for other applications like the search forsignatures of Ea rthquake precursors within the flux of cosmic rays. LAST-MODIFIED:20230502T083737Z LOCATION:Sala de Seminários do DF\, Pavilhão de Física\, 2º piso URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/the-cosmic-ray-extremely-d istributed-observatory-credo/ X-ALT-DESC;FMTTYPE=text/html:

The Cosmic Ray Ext remely Distributed Observatory (CREDO) is a recently formed\,global collab oration dedicated to observing and studying cosmic ray ensembles (CRE):gro ups of minimum two cosmic rays with common primary interaction vertex or t hesame mother particle. The CREDO program embraces testing the known CRE s cenarios\,and getting ready to observe the unexpected physics\, it is also suitable for multimessenger and multi-mission applications.

CRE could be formed both within classicalmodels (e.g. as products of photon-p hoton interactions)\, and exotic scenarios (e.g. asresults of decay of Sup er Heavy Dark Matter particles and subsequent interactions\, Lorentz invar iance violation)\, their fronts might be significantly extended in space a ndtime\, and they might include cosmic rays of energies spanning the whole cosmic rayenergy spectrum.

CRE are expected to be partially obs ervable on Earth even if theinitiating interaction or process occurs as fa r as ~1 Gpc away\, with a footprintcomposed of at least two extensive air showers with parallel arrival directions andcorrelated arrival times. Sinc e CRE are mostly expected to be spread over large areas over hundreds ofki lometers or more\, and because of the expected wide energy range of thecon tributing particles\, CRE detection might only be feasible when using the availablecosmic ray infrastructure collectively\, i.e. as a globally exten ded network of detectors.

CREDO is perfectly suited for probing t he variation of fundamental constants in theaforementioned physical proces ses as well as for other applications like the search forsignatures of Ear thquake precursors within the flux of cosmic rays.

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