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@ARTICLE{ALZetoun:631268,
author = {AL-Zetoun, Ala'a and van Vliet, Arjen and Taylor, Andrew
and Winter, Walter},
title = {{C}onstraining the {E}xtragalactic {M}agnetic {F}ield:
{A}uger {D}ata {M}eet {UHECR} {P}ropagation {M}odeling},
journal = {Monthly notices of the Royal Astronomical Society},
volume = {545},
number = {4},
issn = {0035-8711},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {PUBDB-2025-01940, 2506.16169},
pages = {staf2203},
year = {2026},
abstract = {Recent analyses from the Pierre Auger Collaboration suggest
correlations between the arrival directions of
Ultra-High-Energy Cosmic Rays (UHECRs) and catalogs of
starburst galaxies (SGBs) and jetted active galactic nuclei
(AGNs). We revisit these analyses using the same methodology
as $\auger$ , but explicitly incorporating UHECR deflections
in turbulent extragalactic magnetic fields (EGMFs). We
demonstrate that while for SBGs the same sources as for the
generic $\auger\$ analysis dominate the catalog
correlations, jetted AGNs are dominated by Centaurus~A when
accounting for source distances and deflections. Using our
framework, we derive $90\\%$ confidence level upper limits
on the local EGMF strength of 4.4~nG~Mpc$^{1/2}$ for SBGs
and 6.7~nG~Mpc$^{1/2}$ for jetted AGNs. Assuming instead
that the UHECR deflections predominantly arise from the
Galactic magnetic field (GMF), we obtain a GMF upper limit
of $1.4 \, μ$G~kpc$^{1/2}$ for a Galactic halo size of
30~kpc.},
cin = {$Z_THAT$},
ddc = {520},
cid = {$I:(DE-H253)Z_THAT-20210408$},
pnm = {613 - Matter and Radiation from the Universe (POF4-613)},
pid = {G:(DE-HGF)POF4-613},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
eprint = {2506.16169},
howpublished = {arXiv:2506.16169},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2506.16169;\%\%$},
doi = {10.1093/mnras/staf2203},
url = {https://bib-pubdb1.desy.de/record/631268},
}