Secondary GeV-TeV emission from ultra-high-energy cosmic rays accelerated by GRB 221009A

dc.contributor.authorMirabal, Nestor
dc.date.accessioned2023-10-10T14:30:57Z
dc.date.available2023-10-10T14:30:57Z
dc.date.issued2022-12-08
dc.description.abstractThe origin of ultra-high-energy cosmic rays (UHECRs) remains elusive. Gamma-ray bursts (GRBs) are among the best candidates able to meet the stringent energy requirements needed for particle acceleration to such high energies. If UHECRs were accelerated by the central engine of GRB 221009A, it might be possible to detect secondary photons and neutrinos as the UHECRs travel from the source to the Earth. Here, we attempt to interpret some of the early publicly available data connected to this burst. If the reported early GeV-TeV detection was produced by secondary emission from UHECRs, it probably indicates that UHECRs reached energies > 10²¹  eV and that GRB 221009A exploded inside a magnetic void with intergalactic magnetic field (IGMF) strength B ≤ 3 × 10⁻¹⁶  G. In order to understand the entire energy deposition mechanism, we propose to search existing and future Fermi-LAT data for secondary emission arriving over larger spatial scales and longer time-scales. This strategy might help clarify the origin of UHECRs, constrain the IGMF strength along this line of sight, and start to quantify the fraction of magnetic voids around GRBs.en_US
dc.description.sponsorshipThe material is based upon work supported by NASA under award number 80GSFC21M0002. We acknowledge useful correspondence with Kohta Murase. We thank the referee for useful comments that helped improve the paper.en_US
dc.description.urihttps://academic.oup.com/mnrasl/article/519/1/L85/6884153?login=trueen_US
dc.format.extent2 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m220v7-pg35
dc.identifier.citationN Mirabal, Secondary GeV-TeV emission from ultra-high-energy cosmic rays accelerated by GRB 221009A, Monthly Notices of the Royal Astronomical Society: Letters, Volume 519, Issue 1, February 2023, Pages L85–L86, https://doi.org/10.1093/mnrasl/slac157en_US
dc.identifier.urihttps://doi.org/10.1093/mnrasl/slac157
dc.identifier.urihttp://hdl.handle.net/11603/30036
dc.language.isoen_USen_US
dc.publisherOxford University Pressen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2022 Nestor Mirabal. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en_US
dc.titleSecondary GeV-TeV emission from ultra-high-energy cosmic rays accelerated by GRB 221009Aen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-7021-5838en_US

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