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Constraints on the hosts of UHECR accelerators

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arxiv 2209.08068 v2 pith:5ISPPHG3 submitted 2022-09-16 astro-ph.HE

classification astro-ph.HE
keywords uhecracceleratorsconstraintsabundanceagnsanalysisankleapplying
verification ladder T0 review T1 audit T2 compute T3 formal
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Interactions of ultrahigh energy cosmic rays in the surroundings of their accelerators can naturally explain the observed spectrum and composition of UHECRs, including the abundance of protons below the ankle. We show that astrophysical properties of the UHECR source environment such as the temperature, size, and magnetic field can be constrained by UHECR and neutrino data. Applying this to candidate sources with a simple structure shows that starburst galaxies are consistent with these constraints, but galaxy clusters may be in tension with them. For multi-component systems like AGNs and GRBs the results are indicative but customized analysis is needed for definitive conclusions.

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