{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:Y2NSZGEOEUXQTA67ELSXTTEEHS","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":"3abf853ecaf3bb6d5065dfec5dd213b6fdcc545303183cc3591ab51237410c7e","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-08T21:00:17Z","title_canon_sha256":"4de67602a086e0c67970eea1b0f465ab82dc8e841331afc933baddc709281ede"},"schema_version":"1.0","source":{"id":"1512.02651","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.02651","created_at":"2026-05-18T01:21:51Z"},{"alias_kind":"arxiv_version","alias_value":"1512.02651v1","created_at":"2026-05-18T01:21:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.02651","created_at":"2026-05-18T01:21:51Z"},{"alias_kind":"pith_short_12","alias_value":"Y2NSZGEOEUXQ","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"Y2NSZGEOEUXQTA67","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"Y2NSZGEO","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:90d41f124f51b5f9f723e96d79b4a9306071c5ae5ef83e47365aa9b88814e714","target":"graph","created_at":"2026-05-18T01:21:51Z","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 rapid assembly of the massive black holes that power the luminous quasars observed at $z \\sim 6-7$ remains a puzzle. Various direct collapse models have been proposed to head-start black hole growth from initial seeds with masses $\\sim 10^5\\,\\rm M_\\odot$, which can then reach a billion solar mass while accreting at the Eddington limit. Here we propose an alternative scenario based on radiatively inefficient super-critical accretion of stellar-mass holes embedded in the gaseous circum-nuclear discs (CNDs) expected to exist in the cores of high redshift galaxies. Our sub-pc resolution hydrod","authors_text":"A. Lupi, D. Fiacconi, F. Haardt, L. Mayer, M. Dotti, P. Madau","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-08T21:00:17Z","title":"Growing massive black holes through super-critical accretion of stellar-mass seeds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.02651","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:f61a745371c13cacc1d34c705e9829529db818cef6cb244bf6799fc4d5d2d411","target":"record","created_at":"2026-05-18T01:21:51Z","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":"3abf853ecaf3bb6d5065dfec5dd213b6fdcc545303183cc3591ab51237410c7e","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-08T21:00:17Z","title_canon_sha256":"4de67602a086e0c67970eea1b0f465ab82dc8e841331afc933baddc709281ede"},"schema_version":"1.0","source":{"id":"1512.02651","kind":"arxiv","version":1}},"canonical_sha256":"c69b2c988e252f0983df22e579cc843c866fb0ad4c6b33896ac672647cf1541c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c69b2c988e252f0983df22e579cc843c866fb0ad4c6b33896ac672647cf1541c","first_computed_at":"2026-05-18T01:21:51.056624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:51.056624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JapqrzTDcqvwBjB3wGwnP9mvif72/MjVWotAb/Lb4sdCWB6KR7IrqEkDHHESn1iYoxX00tGoOWKO3n/vxU0KBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:51.057418Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.02651","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f61a745371c13cacc1d34c705e9829529db818cef6cb244bf6799fc4d5d2d411","sha256:90d41f124f51b5f9f723e96d79b4a9306071c5ae5ef83e47365aa9b88814e714"],"state_sha256":"ce16489fae148bea74ab60f90856fb31140511e0eafc4f56cab1fc54a342d8d5"}