{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:FM2F5KNH2GILRMQ3O3RQ7J4APW","short_pith_number":"pith:FM2F5KNH","schema_version":"1.0","canonical_sha256":"2b345ea9a7d190b8b21b76e30fa7807dbbcba4a3edbc66f5348ea730209b4da6","source":{"kind":"arxiv","id":"2304.02066","version":1},"attestation_state":"computed","paper":{"title":"Direct formation of massive black holes via dynamical collapse in metal-enriched merging galaxies at $z \\sim 10$: fully cosmological simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Lorenz Zwick, Lucio Mayer, Pedro R. Capelo, Tiziana Di Matteo","submitted_at":"2023-04-04T18:34:46Z","abstract_excerpt":"We present the results of the first fully cosmological hydrodynamical simulations studying the merger-driven model for massive black hole (BH) seed formation via direct collapse. Using the zoom-in technique as well as particle splitting, we achieve a final spatial resolution of $2$ pc. We show that the major merger of two massive galaxies at redshift $z \\sim 8$ results in the formation of a nuclear supermassive disk (SMD) of only $4$ pc in radius, owing to a prodigious gas inflow sustained at $100$-$1000$ $M_{\\odot}$ yr$^{-1}$. The core of the merger remnant is metal-rich, well above solar abu"},"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":"2304.02066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-04-04T18:34:46Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"0f552024e31ad78c9a244758c0fa0e03c02aaa3e38b3f2a708fbb4727cc87afa","abstract_canon_sha256":"5ac5686fde1ad00a6badc1ea63d9cea246cb573dc3c6d9058e3240186828ce99"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:58:21.548841Z","signature_b64":"BWNY8MqtfgmoWUQ0OQAZoDe6KyluyPXZCNRxOI2DYhTjUJzvXcJ418cGak4bRW6CgMeHelbu9w4X9YSkrbb8CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b345ea9a7d190b8b21b76e30fa7807dbbcba4a3edbc66f5348ea730209b4da6","last_reissued_at":"2026-07-05T05:58:21.548362Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:58:21.548362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Direct formation of massive black holes via dynamical collapse in metal-enriched merging galaxies at $z \\sim 10$: fully cosmological simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Lorenz Zwick, Lucio Mayer, Pedro R. Capelo, Tiziana Di Matteo","submitted_at":"2023-04-04T18:34:46Z","abstract_excerpt":"We present the results of the first fully cosmological hydrodynamical simulations studying the merger-driven model for massive black hole (BH) seed formation via direct collapse. Using the zoom-in technique as well as particle splitting, we achieve a final spatial resolution of $2$ pc. We show that the major merger of two massive galaxies at redshift $z \\sim 8$ results in the formation of a nuclear supermassive disk (SMD) of only $4$ pc in radius, owing to a prodigious gas inflow sustained at $100$-$1000$ $M_{\\odot}$ yr$^{-1}$. The core of the merger remnant is metal-rich, well above solar abu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.02066","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/2304.02066/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":"2304.02066","created_at":"2026-07-05T05:58:21.548421+00:00"},{"alias_kind":"arxiv_version","alias_value":"2304.02066v1","created_at":"2026-07-05T05:58:21.548421+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.02066","created_at":"2026-07-05T05:58:21.548421+00:00"},{"alias_kind":"pith_short_12","alias_value":"FM2F5KNH2GIL","created_at":"2026-07-05T05:58:21.548421+00:00"},{"alias_kind":"pith_short_16","alias_value":"FM2F5KNH2GILRMQ3","created_at":"2026-07-05T05:58:21.548421+00:00"},{"alias_kind":"pith_short_8","alias_value":"FM2F5KNH","created_at":"2026-07-05T05:58:21.548421+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2607.00349","citing_title":"Variability in Supermassive Black-Hole Accretion Rates in Fuzzy Dark Matter Cores due to Black-Hole Wandering","ref_index":13,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW","json":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW.json","graph_json":"https://pith.science/api/pith-number/FM2F5KNH2GILRMQ3O3RQ7J4APW/graph.json","events_json":"https://pith.science/api/pith-number/FM2F5KNH2GILRMQ3O3RQ7J4APW/events.json","paper":"https://pith.science/paper/FM2F5KNH"},"agent_actions":{"view_html":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW","download_json":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW.json","view_paper":"https://pith.science/paper/FM2F5KNH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2304.02066&json=true","fetch_graph":"https://pith.science/api/pith-number/FM2F5KNH2GILRMQ3O3RQ7J4APW/graph.json","fetch_events":"https://pith.science/api/pith-number/FM2F5KNH2GILRMQ3O3RQ7J4APW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW/action/storage_attestation","attest_author":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW/action/author_attestation","sign_citation":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW/action/citation_signature","submit_replication":"https://pith.science/pith/FM2F5KNH2GILRMQ3O3RQ7J4APW/action/replication_record"}},"created_at":"2026-07-05T05:58:21.548421+00:00","updated_at":"2026-07-05T05:58:21.548421+00:00"}