{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:CEQ3AX2B7PGBQLEL334FSCGA3D","short_pith_number":"pith:CEQ3AX2B","schema_version":"1.0","canonical_sha256":"1121b05f41fbcc182c8bdef85908c0d8f64ea92cef2a1ef35803067cd9ca14e9","source":{"kind":"arxiv","id":"astro-ph/0701494","version":1},"attestation_state":"computed","paper":{"title":"Wind anisotropies and GRB progenitors","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andre Maeder, Georges Meynet","submitted_at":"2007-01-17T09:43:28Z","abstract_excerpt":"We study the effect of wind anisotropies on the stellar evolution leading to collapsars. Rotating models of a 60 M$_\\odot$ star with $\\Omega/\\Omega_{\\rm crit}=0.75$ on the ZAMS, accounting for shellular rotation and a magnetic field, with and without wind anisotropies, are computed at $Z$=0.002 until the end of the core He-burning phase. Only the models accounting for the effects of the wind anisotropies retain enough angular momentum in their core to produce a Gamma Ray Burst (GRB). The chemical composition is such that a type Ic supernova event occurs. Wind anisotropies appear to be a key ph"},"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":"astro-ph/0701494","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-17T09:43:28Z","cross_cats_sorted":[],"title_canon_sha256":"b3ddf16f2491fd13247b06f970d6487a3fb011913d732a0845d017e3e6e14530","abstract_canon_sha256":"1f2bc4b7b2d9663c679a0bb50a43fc076ab9fa9ffc3db79bb724f9dbb5baa323"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:27.081709Z","signature_b64":"Rl3O7XRbSAplT5zWtop3ggWdGoBhoplXrC5hUsP+ZkUM1zzyByy2YVopu57rZ5AvA39wRw7MabzPyLRSV3ALDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1121b05f41fbcc182c8bdef85908c0d8f64ea92cef2a1ef35803067cd9ca14e9","last_reissued_at":"2026-05-18T01:40:27.081081Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:27.081081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Wind anisotropies and GRB progenitors","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andre Maeder, Georges Meynet","submitted_at":"2007-01-17T09:43:28Z","abstract_excerpt":"We study the effect of wind anisotropies on the stellar evolution leading to collapsars. Rotating models of a 60 M$_\\odot$ star with $\\Omega/\\Omega_{\\rm crit}=0.75$ on the ZAMS, accounting for shellular rotation and a magnetic field, with and without wind anisotropies, are computed at $Z$=0.002 until the end of the core He-burning phase. Only the models accounting for the effects of the wind anisotropies retain enough angular momentum in their core to produce a Gamma Ray Burst (GRB). The chemical composition is such that a type Ic supernova event occurs. Wind anisotropies appear to be a key ph"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0701494","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":"astro-ph/0701494","created_at":"2026-05-18T01:40:27.081164+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0701494v1","created_at":"2026-05-18T01:40:27.081164+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0701494","created_at":"2026-05-18T01:40:27.081164+00:00"},{"alias_kind":"pith_short_12","alias_value":"CEQ3AX2B7PGB","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_16","alias_value":"CEQ3AX2B7PGBQLEL","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_8","alias_value":"CEQ3AX2B","created_at":"2026-05-18T12:25:55.427421+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/CEQ3AX2B7PGBQLEL334FSCGA3D","json":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D.json","graph_json":"https://pith.science/api/pith-number/CEQ3AX2B7PGBQLEL334FSCGA3D/graph.json","events_json":"https://pith.science/api/pith-number/CEQ3AX2B7PGBQLEL334FSCGA3D/events.json","paper":"https://pith.science/paper/CEQ3AX2B"},"agent_actions":{"view_html":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D","download_json":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D.json","view_paper":"https://pith.science/paper/CEQ3AX2B","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0701494&json=true","fetch_graph":"https://pith.science/api/pith-number/CEQ3AX2B7PGBQLEL334FSCGA3D/graph.json","fetch_events":"https://pith.science/api/pith-number/CEQ3AX2B7PGBQLEL334FSCGA3D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D/action/storage_attestation","attest_author":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D/action/author_attestation","sign_citation":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D/action/citation_signature","submit_replication":"https://pith.science/pith/CEQ3AX2B7PGBQLEL334FSCGA3D/action/replication_record"}},"created_at":"2026-05-18T01:40:27.081164+00:00","updated_at":"2026-05-18T01:40:27.081164+00:00"}