{"paper":{"title":"Measurements of Cosmic-ray Low-energy Antiproton and Proton Spectra in a Transient Period of the Solar Field Reversal","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Moiseev, A. Yamamoto, E. S. Seo, H. Fuke, H. Matsumoto, H. Matsunaga, I. Ueda, J. F. Ormes, J. Mitchell, J. Nishimura, J. Suzuki, J. Z. Wang, K. Abe, K. Anraku, K. Izumi, K. Tanaka, K. Tanizaki, K. Yamato, K. Yoshimura, M. Fujikawa, M. Imori, M. Motoki, M. Nozaki, M. Sasaki, N. Matsui, R. Streitmatter, S. Haino, S. Matsuda, S. Orito, T. Maeno, T. Matsukawa, T. Mitsui, T. Saeki, T. Sanuki, T. Sonoda, T. Yoshida, Y. Asaoka, Y. Makida, Y. Shikaze, Y. Yajima, Y. Yamagami, Y. Yamamoto","submitted_at":"2001-09-02T04:27:42Z","abstract_excerpt":"The energy spectra of cosmic-ray low-energy antiprotons and protons have been measured by BESS in 1999 and 2000, during a period covering the solar magnetic field reversal. Based on these measurements, a sudden increase of the antiproton to proton flux ratio following the solar magnetic field reversal was observed, and it generally agrees with a drift model of the solar modulation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0109007","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}