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Here we study ion acceleration by magnetic reconnection at the HCS. To estimate ion energization, we solve the Parker transport equation coupled to a large-scale 2D MHD reconnection simulation. We find that multiple ion species develop power-law distributions with both spectral index and high-energy cutoff $E_{\\text{max}}$ consistent with in-situ da","authors_text":"Colby Haggerty, Fan Guo, Giulia Murtas, Giuseppe Arr\\`o, Jeongbhin Seo, Xiaocan Li","cross_cats":["physics.plasm-ph"],"headline":"Simulations show magnetic reconnection at the heliospheric current sheet energizes protons and heavier ions to energies observed by Parker Solar Probe.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-05-14T16:57:04Z","title":"The Role of Magnetic Reconnection in Energizing Protons and Heavier Ions at the Heliospheric Current Sheet"},"references":{"count":50,"internal_anchors":0,"resolved_work":50,"sample":[{"cited_arxiv_id":"","doi":"10.1103/physrevlett.126.135101","is_internal_anchor":false,"ref_index":1,"title":"F., Swisdak, M., et al","work_id":"23d46dec-393b-41ee-9b81-19baefc9ed6c","year":2021},{"cited_arxiv_id":"","doi":"10.1016/0370-1573(87)90134-7","is_internal_anchor":false,"ref_index":2,"title":"Blandford \\ and\\ author D","work_id":"098bdd97-be52-424b-bf66-50a5cdfa21b8","year":1987},{"cited_arxiv_id":"","doi":"10.5194/egusphere-egu23-3494","is_internal_anchor":false,"ref_index":3,"title":"2023a, in EGU General Assembly Conference Abstracts, EGU General Assembly Conference Abstracts, EGU–3494, doi: 10.5194/egusphere-egu23-3494","work_id":"ed71bac6-5256-4b25-b5e4-4e115e329253","year":null},{"cited_arxiv_id":"","doi":"10.3847/1538-4357/ac4961","is_internal_anchor":false,"ref_index":4,"title":"Desai, M. 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