{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:2B4RPXQYMYGZDKMKYQLJQM5FT5","short_pith_number":"pith:2B4RPXQY","schema_version":"1.0","canonical_sha256":"d07917de18660d91a98ac4169833a59f594dde12d55dad6e4b17798fc95de166","source":{"kind":"arxiv","id":"1711.10844","version":1},"attestation_state":"computed","paper":{"title":"Solar modulation of cosmic ray positrons in a very quiet heliosphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.space-ph","authors_text":"D. Bisschoff, E.E. Vos, J.L. Raath, M. Boezio, M.S. Potgieter, R. Munini, V. Di Felice","submitted_at":"2017-11-29T13:39:49Z","abstract_excerpt":"Since the beginning of the space exploration era, solar activity was observed at its lowest level during 2006 to 2009. During this period, the PAMELA space experiment observed spectra for galactic cosmic rays, specifically for protons, electrons and positrons over a wide energy range, during what is called an A < 0 solar magnetic polarity cycle. Drift theory predicts a difference in the behaviour for these oppositely charge particles during A < 0 cycles. An opportunity was thus created to study the predicted charge-sign-dependent modulation, also now for very quiet heliospheric conditions. A c"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1711.10844","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2017-11-29T13:39:49Z","cross_cats_sorted":[],"title_canon_sha256":"2b31fb0d1bc4af644e2159f84aa339666ca4816c8e31989190003341095ef492","abstract_canon_sha256":"4f0dae9b87904ee877e78833b3124c957872d50580269e4e0da2671432068e29"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:16.792429Z","signature_b64":"KCj+faLv0yCTMFtKeWxuuaJWtdGUrlelKcz8BxyNvIdhUL3udTVmTH7pXnvw1kDhjQ974Htw4hbl7/25XXkkDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d07917de18660d91a98ac4169833a59f594dde12d55dad6e4b17798fc95de166","last_reissued_at":"2026-05-18T00:29:16.791931Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:16.791931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Solar modulation of cosmic ray positrons in a very quiet heliosphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.space-ph","authors_text":"D. Bisschoff, E.E. Vos, J.L. Raath, M. Boezio, M.S. Potgieter, R. Munini, V. Di Felice","submitted_at":"2017-11-29T13:39:49Z","abstract_excerpt":"Since the beginning of the space exploration era, solar activity was observed at its lowest level during 2006 to 2009. During this period, the PAMELA space experiment observed spectra for galactic cosmic rays, specifically for protons, electrons and positrons over a wide energy range, during what is called an A < 0 solar magnetic polarity cycle. Drift theory predicts a difference in the behaviour for these oppositely charge particles during A < 0 cycles. An opportunity was thus created to study the predicted charge-sign-dependent modulation, also now for very quiet heliospheric conditions. A c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10844","kind":"arxiv","version":1},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1711.10844","created_at":"2026-05-18T00:29:16.792008+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.10844v1","created_at":"2026-05-18T00:29:16.792008+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10844","created_at":"2026-05-18T00:29:16.792008+00:00"},{"alias_kind":"pith_short_12","alias_value":"2B4RPXQYMYGZ","created_at":"2026-05-18T12:30:55.937587+00:00"},{"alias_kind":"pith_short_16","alias_value":"2B4RPXQYMYGZDKMK","created_at":"2026-05-18T12:30:55.937587+00:00"},{"alias_kind":"pith_short_8","alias_value":"2B4RPXQY","created_at":"2026-05-18T12:30:55.937587+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5","json":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5.json","graph_json":"https://pith.science/api/pith-number/2B4RPXQYMYGZDKMKYQLJQM5FT5/graph.json","events_json":"https://pith.science/api/pith-number/2B4RPXQYMYGZDKMKYQLJQM5FT5/events.json","paper":"https://pith.science/paper/2B4RPXQY"},"agent_actions":{"view_html":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5","download_json":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5.json","view_paper":"https://pith.science/paper/2B4RPXQY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.10844&json=true","fetch_graph":"https://pith.science/api/pith-number/2B4RPXQYMYGZDKMKYQLJQM5FT5/graph.json","fetch_events":"https://pith.science/api/pith-number/2B4RPXQYMYGZDKMKYQLJQM5FT5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5/action/storage_attestation","attest_author":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5/action/author_attestation","sign_citation":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5/action/citation_signature","submit_replication":"https://pith.science/pith/2B4RPXQYMYGZDKMKYQLJQM5FT5/action/replication_record"}},"created_at":"2026-05-18T00:29:16.792008+00:00","updated_at":"2026-05-18T00:29:16.792008+00:00"}