{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZP6FRURNHVETESSSSTV4BM3YYI","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1918c748b852e32a0ef839e0f4fb91731c9a7cfd6c6d5de5b71c033f9c32f512","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-03-14T20:42:44Z","title_canon_sha256":"ac6974387451ec09f8a5cca7305c9b07a487f12fdc7aca8da2749bd94ef9ada7"},"schema_version":"1.0","source":{"id":"1303.3599","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.3599","created_at":"2026-05-18T01:51:07Z"},{"alias_kind":"arxiv_version","alias_value":"1303.3599v1","created_at":"2026-05-18T01:51:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.3599","created_at":"2026-05-18T01:51:07Z"},{"alias_kind":"pith_short_12","alias_value":"ZP6FRURNHVET","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZP6FRURNHVETESSS","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZP6FRURN","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:0d88eae2a2285eea8d534610da2838ca93fb8604947c3dc2ffff078fc1917d0d","target":"graph","created_at":"2026-05-18T01:51:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Context : Penumbrae are an important characteristic of sunspots, whose formation is intricately related to the nature of sub-photospheric magnetic fields. Aims : We study the formation of a penumbra in a decaying sunspot and compare its properties with those seen during the development of a proto-spot. Methods : High-resolution spectropolarimetric observations of active region NOAA 11283 were obtained from the spectro-polarimeter on board Hinode. These were complemented with full-disk filtergrams of continuum intensity, line-of-sight magnetograms, and dopplergrams from the Helioseismic and Mag","authors_text":"Christian Beck, Horst Balthasar, Klaus G. Puschmann, Rohan E. Louis, Shibu K. Mathew","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-03-14T20:42:44Z","title":"Formation of a penumbra in a decaying sunspot"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.3599","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:994b96eb3abbe2296a8e0308d48594fb37515078de01604828bfc0a0546c82b9","target":"record","created_at":"2026-05-18T01:51:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1918c748b852e32a0ef839e0f4fb91731c9a7cfd6c6d5de5b71c033f9c32f512","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-03-14T20:42:44Z","title_canon_sha256":"ac6974387451ec09f8a5cca7305c9b07a487f12fdc7aca8da2749bd94ef9ada7"},"schema_version":"1.0","source":{"id":"1303.3599","kind":"arxiv","version":1}},"canonical_sha256":"cbfc58d22d3d49324a5294ebc0b378c22e5e24eae525091bca69e63e60b5b49c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbfc58d22d3d49324a5294ebc0b378c22e5e24eae525091bca69e63e60b5b49c","first_computed_at":"2026-05-18T01:51:07.113166Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:07.113166Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3ymRck5TgpwliMBBYdJVVcPZvHSudi2DLnDo/uGY4bpA/Ls26zG5eKc6BFL8gPUeT5RYV6xpsoVk7XlNk4pZBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:07.113805Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.3599","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:994b96eb3abbe2296a8e0308d48594fb37515078de01604828bfc0a0546c82b9","sha256:0d88eae2a2285eea8d534610da2838ca93fb8604947c3dc2ffff078fc1917d0d"],"state_sha256":"b6f536c3b9e18d7b7cb57af7b109c9dba3455d5db8619a1dd19cd11bfb930435"}