{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:AX47QU6R4CDJGZNRB6G7CGZPZ5","short_pith_number":"pith:AX47QU6R","schema_version":"1.0","canonical_sha256":"05f9f853d1e0869365b10f8df11b2fcf5c4164a7850390d514de15fa909ddb20","source":{"kind":"arxiv","id":"2005.04202","version":1},"attestation_state":"computed","paper":{"title":"Spatial Distribution of Origin of Umbral Waves in a Sunspot Umbra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ali Kilcik, Eun-Kyung Lim, Seray Sahin, Valentina Abramenko, Vasyl Yurchyshyn","submitted_at":"2020-05-08T17:44:55Z","abstract_excerpt":"Umbral flashes (UFs) are emissions in the core of chromospheric lines caused by upward propagating waves steepening into shocks. UFs are followed by an expanding blue shifted umbral wave (UW) and red-shifted plasma returning to the initial state. Here we use 5 s cadence images acquired at $\\pm$0.04~nm off the Halpha line center by the Visible Imaging Spectrometer (VIS) installed on the Goode Solar Telescope (GST) to detect the origin of UFs and UWs in a sunspot with a uniform umbra free of LBs and clusters of umbral dots. The data showed that UFs do not randomly originate over the umbra. Inste"},"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":"2005.04202","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-05-08T17:44:55Z","cross_cats_sorted":[],"title_canon_sha256":"212532c027f5badd058ec0c4245b6767e75c60936557939a63b0be0cc20f7e17","abstract_canon_sha256":"c0f3cfcdc66e0e0f289762ef191a2d81e20b456f020da2a9c64573b27ecad6fe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:14:49.998625Z","signature_b64":"ieDLaaiUAdFUnUmJslAZKqLOiBKx2AgDRcWtUQjywF7Z2SDkMnST80MUJg4DnNTmRvl1URIbZORVu4uIx2mCAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05f9f853d1e0869365b10f8df11b2fcf5c4164a7850390d514de15fa909ddb20","last_reissued_at":"2026-07-05T01:14:49.997298Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:14:49.997298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spatial Distribution of Origin of Umbral Waves in a Sunspot Umbra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ali Kilcik, Eun-Kyung Lim, Seray Sahin, Valentina Abramenko, Vasyl Yurchyshyn","submitted_at":"2020-05-08T17:44:55Z","abstract_excerpt":"Umbral flashes (UFs) are emissions in the core of chromospheric lines caused by upward propagating waves steepening into shocks. UFs are followed by an expanding blue shifted umbral wave (UW) and red-shifted plasma returning to the initial state. Here we use 5 s cadence images acquired at $\\pm$0.04~nm off the Halpha line center by the Visible Imaging Spectrometer (VIS) installed on the Goode Solar Telescope (GST) to detect the origin of UFs and UWs in a sunspot with a uniform umbra free of LBs and clusters of umbral dots. The data showed that UFs do not randomly originate over the umbra. Inste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.04202","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.04202/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2005.04202","created_at":"2026-07-05T01:14:49.997372+00:00"},{"alias_kind":"arxiv_version","alias_value":"2005.04202v1","created_at":"2026-07-05T01:14:49.997372+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.04202","created_at":"2026-07-05T01:14:49.997372+00:00"},{"alias_kind":"pith_short_12","alias_value":"AX47QU6R4CDJ","created_at":"2026-07-05T01:14:49.997372+00:00"},{"alias_kind":"pith_short_16","alias_value":"AX47QU6R4CDJGZNR","created_at":"2026-07-05T01:14:49.997372+00:00"},{"alias_kind":"pith_short_8","alias_value":"AX47QU6R","created_at":"2026-07-05T01:14:49.997372+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/AX47QU6R4CDJGZNRB6G7CGZPZ5","json":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5.json","graph_json":"https://pith.science/api/pith-number/AX47QU6R4CDJGZNRB6G7CGZPZ5/graph.json","events_json":"https://pith.science/api/pith-number/AX47QU6R4CDJGZNRB6G7CGZPZ5/events.json","paper":"https://pith.science/paper/AX47QU6R"},"agent_actions":{"view_html":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5","download_json":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5.json","view_paper":"https://pith.science/paper/AX47QU6R","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2005.04202&json=true","fetch_graph":"https://pith.science/api/pith-number/AX47QU6R4CDJGZNRB6G7CGZPZ5/graph.json","fetch_events":"https://pith.science/api/pith-number/AX47QU6R4CDJGZNRB6G7CGZPZ5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5/action/storage_attestation","attest_author":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5/action/author_attestation","sign_citation":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5/action/citation_signature","submit_replication":"https://pith.science/pith/AX47QU6R4CDJGZNRB6G7CGZPZ5/action/replication_record"}},"created_at":"2026-07-05T01:14:49.997372+00:00","updated_at":"2026-07-05T01:14:49.997372+00:00"}