{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:URLTLI3DRDMXCZWWVYZ2NLCCJP","short_pith_number":"pith:URLTLI3D","schema_version":"1.0","canonical_sha256":"a45735a36388d97166d6ae33a6ac424bc9c6837672f7d3b6d030ea384f11971c","source":{"kind":"arxiv","id":"2308.10519","version":1},"attestation_state":"computed","paper":{"title":"Preliminary Exploration of Areal Density of Angular Momentum for Spiral Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Baifei Shen, David Salzmann, Feilu Wang, Gang Zhao, Lan Zhang, Xiangxiang Xue, Zehao Zhong","submitted_at":"2023-08-21T07:12:55Z","abstract_excerpt":"The specific angular momenta ($j_t$) of stars, baryons as a whole and dark matter haloes contain clues of vital importance about how galaxies form and evolve. Using a sample of 70 spiral galaxies, we perform a preliminary analysis of $j_t$, and introduce a new quantity, e.g., areal density of angular momentum (ADAM) ($j_t~M_\\star/4R_d^2$) as an indication for the existence of jet in spiral galaxies. The percentage of spiral galaxies having jet(s) shows strong correlation with the ADAM, although the present sample is incomplete."},"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":"2308.10519","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-21T07:12:55Z","cross_cats_sorted":[],"title_canon_sha256":"68449f3840674ce137b06d775ef0254f553a7a3f793e731ff3f1578b6521ff25","abstract_canon_sha256":"f61f8d796439759eb937dc9d9739be72b2d4cd3a47bf9e5a2e1eb252687cadec"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:43:10.518117Z","signature_b64":"kSobCM3plxfWC+8uVsvh5NOTqNO3eHNWZ5wNdY9mbbCew0EWX58ib2KBPDcsEmQlA+ICVOd1CUx3V8/sfjYZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a45735a36388d97166d6ae33a6ac424bc9c6837672f7d3b6d030ea384f11971c","last_reissued_at":"2026-07-05T06:43:10.517659Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:43:10.517659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Preliminary Exploration of Areal Density of Angular Momentum for Spiral Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Baifei Shen, David Salzmann, Feilu Wang, Gang Zhao, Lan Zhang, Xiangxiang Xue, Zehao Zhong","submitted_at":"2023-08-21T07:12:55Z","abstract_excerpt":"The specific angular momenta ($j_t$) of stars, baryons as a whole and dark matter haloes contain clues of vital importance about how galaxies form and evolve. Using a sample of 70 spiral galaxies, we perform a preliminary analysis of $j_t$, and introduce a new quantity, e.g., areal density of angular momentum (ADAM) ($j_t~M_\\star/4R_d^2$) as an indication for the existence of jet in spiral galaxies. The percentage of spiral galaxies having jet(s) shows strong correlation with the ADAM, although the present sample is incomplete."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.10519","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/2308.10519/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":"2308.10519","created_at":"2026-07-05T06:43:10.517715+00:00"},{"alias_kind":"arxiv_version","alias_value":"2308.10519v1","created_at":"2026-07-05T06:43:10.517715+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.10519","created_at":"2026-07-05T06:43:10.517715+00:00"},{"alias_kind":"pith_short_12","alias_value":"URLTLI3DRDMX","created_at":"2026-07-05T06:43:10.517715+00:00"},{"alias_kind":"pith_short_16","alias_value":"URLTLI3DRDMXCZWW","created_at":"2026-07-05T06:43:10.517715+00:00"},{"alias_kind":"pith_short_8","alias_value":"URLTLI3D","created_at":"2026-07-05T06:43:10.517715+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/URLTLI3DRDMXCZWWVYZ2NLCCJP","json":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP.json","graph_json":"https://pith.science/api/pith-number/URLTLI3DRDMXCZWWVYZ2NLCCJP/graph.json","events_json":"https://pith.science/api/pith-number/URLTLI3DRDMXCZWWVYZ2NLCCJP/events.json","paper":"https://pith.science/paper/URLTLI3D"},"agent_actions":{"view_html":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP","download_json":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP.json","view_paper":"https://pith.science/paper/URLTLI3D","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2308.10519&json=true","fetch_graph":"https://pith.science/api/pith-number/URLTLI3DRDMXCZWWVYZ2NLCCJP/graph.json","fetch_events":"https://pith.science/api/pith-number/URLTLI3DRDMXCZWWVYZ2NLCCJP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP/action/storage_attestation","attest_author":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP/action/author_attestation","sign_citation":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP/action/citation_signature","submit_replication":"https://pith.science/pith/URLTLI3DRDMXCZWWVYZ2NLCCJP/action/replication_record"}},"created_at":"2026-07-05T06:43:10.517715+00:00","updated_at":"2026-07-05T06:43:10.517715+00:00"}