{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:BRNKQCKCGQT2BUHOTLTT3REFL7","short_pith_number":"pith:BRNKQCKC","schema_version":"1.0","canonical_sha256":"0c5aa809423427a0d0ee9ae73dc4855fc170401738a0a4f3c7b1b8f3c4410cc3","source":{"kind":"arxiv","id":"1903.09612","version":1},"attestation_state":"computed","paper":{"title":"The Origins of Protostellar Core Angular Momenta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Aleksandra Kuznetsova, Fabian Heitsch, Lee Hartmann","submitted_at":"2019-03-22T17:13:13Z","abstract_excerpt":"We present the results of a suite of numerical simulations designed to explore the origin of the angular momenta of protostellar cores. Using the hydrodynamic grid code \\emph{Athena} with a sink implementation, we follow the formation of protostellar cores and protostars (sinks) from the subvirial collapse of molecular clouds on larger scales to investigate the range and relative distribution of core properties. We find that the core angular momenta are relatively unaffected by large-scale rotation of the parent cloud; instead, we infer that angular momenta are mainly imparted by torques betwe"},"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":"1903.09612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-22T17:13:13Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"fd1021e21c75845b9e06b36c5899ac894255450c57d4432888618d0bd0eaa34d","abstract_canon_sha256":"e0ff21a9f8d504e4b3c8e7a7b9447bd4d1b4cac0896bf36360d7d566b74fb034"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:52.620917Z","signature_b64":"XQLrwdviYuEZs3Zt42pFBzJWkjJQ9WwPMQ48QcfuRIpvJ2yfMIdebVgAbqRZ5NNscuPVuyYO1o/B+1sViGwiCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c5aa809423427a0d0ee9ae73dc4855fc170401738a0a4f3c7b1b8f3c4410cc3","last_reissued_at":"2026-05-17T23:46:52.620258Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:52.620258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Origins of Protostellar Core Angular Momenta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Aleksandra Kuznetsova, Fabian Heitsch, Lee Hartmann","submitted_at":"2019-03-22T17:13:13Z","abstract_excerpt":"We present the results of a suite of numerical simulations designed to explore the origin of the angular momenta of protostellar cores. Using the hydrodynamic grid code \\emph{Athena} with a sink implementation, we follow the formation of protostellar cores and protostars (sinks) from the subvirial collapse of molecular clouds on larger scales to investigate the range and relative distribution of core properties. We find that the core angular momenta are relatively unaffected by large-scale rotation of the parent cloud; instead, we infer that angular momenta are mainly imparted by torques betwe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.09612","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":"1903.09612","created_at":"2026-05-17T23:46:52.620376+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.09612v1","created_at":"2026-05-17T23:46:52.620376+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.09612","created_at":"2026-05-17T23:46:52.620376+00:00"},{"alias_kind":"pith_short_12","alias_value":"BRNKQCKCGQT2","created_at":"2026-05-18T12:33:12.712433+00:00"},{"alias_kind":"pith_short_16","alias_value":"BRNKQCKCGQT2BUHO","created_at":"2026-05-18T12:33:12.712433+00:00"},{"alias_kind":"pith_short_8","alias_value":"BRNKQCKC","created_at":"2026-05-18T12:33:12.712433+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.12595","citing_title":"Global and Local Infall in the ASHES Sample (GLASHES). II. Asymmetric Line Profiles around Dense Cores in 70 $\\mu$m Dark Massive Clumps","ref_index":245,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7","json":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7.json","graph_json":"https://pith.science/api/pith-number/BRNKQCKCGQT2BUHOTLTT3REFL7/graph.json","events_json":"https://pith.science/api/pith-number/BRNKQCKCGQT2BUHOTLTT3REFL7/events.json","paper":"https://pith.science/paper/BRNKQCKC"},"agent_actions":{"view_html":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7","download_json":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7.json","view_paper":"https://pith.science/paper/BRNKQCKC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.09612&json=true","fetch_graph":"https://pith.science/api/pith-number/BRNKQCKCGQT2BUHOTLTT3REFL7/graph.json","fetch_events":"https://pith.science/api/pith-number/BRNKQCKCGQT2BUHOTLTT3REFL7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7/action/storage_attestation","attest_author":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7/action/author_attestation","sign_citation":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7/action/citation_signature","submit_replication":"https://pith.science/pith/BRNKQCKCGQT2BUHOTLTT3REFL7/action/replication_record"}},"created_at":"2026-05-17T23:46:52.620376+00:00","updated_at":"2026-05-17T23:46:52.620376+00:00"}