Search for ultra high energy cosmic rays from radiogalaxy Virgo A
Oleh Kobzar, Bohdan Hnatyk, Volodymyr Marchenko, Oleksandr Sushchov

TL;DR
This study investigates the potential of Virgo A and the Virgo Cluster as sources of ultra high energy cosmic rays, analyzing recent data and simulating cosmic ray propagation to identify possible source regions and flux enhancements.
Contribution
It provides the first detailed simulation of EHECR propagation from Virgo A and the Virgo Cluster, incorporating magnetic deflections and event-by-event analysis to identify potential source regions.
Findings
No excess EHECRs from Virgo A/VC directions.
Detected flux enhancements from the Local Filament and Hot/Cold Spot regions.
Evidence of UHECRs possibly originating from Virgo A's past jet activity.
Abstract
Active galactic nuclei (AGNs) are considered to be one of the most appropriate sources of ultra high energy cosmic rays (UHECRs, ). Radiogalaxy Virgo A (M87) in the centre of a cluster of galaxies Virgo Cluster (VC) can be a prominent source of UHECRs. We investigate the possible contribution of Virgo A and the VC to the flux of events with trans-GZK energies - extremely high energy cosmic rays (EHECRs) - from the recent Auger and Telescope Array (TA) data sets ( and , respectively). We simulate EHECR propagation from Virgo A and the VC taking into account their deflections in galactic (GMF) and extragalactic (EGMF) magnetic fields and show that there is no excess of EHECR arrival directions from images of Virgo A/VC at different EHECR rigidities. By means of event-by-event analysis we recover the extragalactic…
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