{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BMDD2BHQTHUBKFGAEPRHF5Y5KQ","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":"192cd05c95d1e55e9c8b24b45176ba03fb6ae581844c0d41012186144292846f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-10T17:09:21Z","title_canon_sha256":"16e8f38fb542e3d17d4d7fb1f20c4e0744003f3ef3cda1de34b0248818d909c4"},"schema_version":"1.0","source":{"id":"1204.2221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.2221","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"arxiv_version","alias_value":"1204.2221v1","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.2221","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"pith_short_12","alias_value":"BMDD2BHQTHUB","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BMDD2BHQTHUBKFGA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BMDD2BHQ","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:b373a3cbcb81ef7cce2a92752fc20ce36a1a6b3c95cecc0de6d1e9956f27a5d5","target":"graph","created_at":"2026-05-18T01:57:53Z","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":"The motion of dark striations across bright filaments in a sunspot penumbra has become an important new diagnostic of convective gas flows in penumbral filaments. The nature of these striations has, however, remained unclear. Here we present an analysis of small scale motions in penumbral filaments in both simulations and observations. The simulations, when viewed from above, show fine structure with dark lanes running outwards from the dark core of the penumbral filaments. The dark lanes either occur preferentially on one side or alternate between both sides of the filament. We identify this ","authors_text":"J. Hirzberger, L. Bharti, M. Rempel, R.H. Cameron, S. K. Solanki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-10T17:09:21Z","title":"Waves as the source of apparent twisting motions in sunspot penumbrae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2221","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:e272bb3a4f9bb11a6df7ad5978e14060bc2483525c73544f45c26449a8318f07","target":"record","created_at":"2026-05-18T01:57:53Z","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":"192cd05c95d1e55e9c8b24b45176ba03fb6ae581844c0d41012186144292846f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-10T17:09:21Z","title_canon_sha256":"16e8f38fb542e3d17d4d7fb1f20c4e0744003f3ef3cda1de34b0248818d909c4"},"schema_version":"1.0","source":{"id":"1204.2221","kind":"arxiv","version":1}},"canonical_sha256":"0b063d04f099e81514c023e272f71d54302fb4d540b1168381aabfbed2a1288e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b063d04f099e81514c023e272f71d54302fb4d540b1168381aabfbed2a1288e","first_computed_at":"2026-05-18T01:57:53.937076Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:53.937076Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PbNW5SkhaNw0FQz+BHzRja+kh6ZMI0GGyf7VCx4yV5K7121KsjwHa/BloTaX3obPfoII1F7Z7B/N1OFHZa+GBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:53.937533Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.2221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e272bb3a4f9bb11a6df7ad5978e14060bc2483525c73544f45c26449a8318f07","sha256:b373a3cbcb81ef7cce2a92752fc20ce36a1a6b3c95cecc0de6d1e9956f27a5d5"],"state_sha256":"20247fa52609af65fdefda49b1c8c2f54497a3765f34215d6b808adce2f89ad8"}