{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:QXN4IA4PA6LDNC4RIYYER3ZTQZ","short_pith_number":"pith:QXN4IA4P","schema_version":"1.0","canonical_sha256":"85dbc4038f0796368b91463048ef33867117aa57903bb49f6f2bd7242f51c3ad","source":{"kind":"arxiv","id":"2607.20123","version":1},"attestation_state":"computed","paper":{"title":"Modeling the HI-Halo Connection: Evolution, Scatter, and a Halo-based Prescription for 21-cm Mock Catalogs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Fabio Fontanot, Gabriella De Lucia, Lizhi Xie, Marta Spinelli, Michaela Hirschmann, Mohd Kamran","submitted_at":"2026-07-22T13:26:39Z","abstract_excerpt":"The redshifted 21-cm line of neutral hydrogen (HI) is a powerful tracer of large-scale structure, and post-reionization HI intensity mapping is emerging as a competitive cosmological probe whose interpretation requires a description of how HI populates galaxies and dark matter halos. We characterize the HI--halo mass relation, its redshift evolution, and its intrinsic scatter, identifying its secondary dependences. We use the updated GAlaxy Evolution and Assembly (GAEA) semi-analytic model, applied to the Millennium-I and Millennium-II simulations, to predict the HI mass function (HIMF) and th"},"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":"2607.20123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-22T13:26:39Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"21492edb96b6634ab2da9635e506b48ff5aa4c537d35f473319688b6f52d5a25","abstract_canon_sha256":"fc5c079dd2f26bf396690456aa78c1fba5e72ee69c1a00a7a937773b7cc1b746"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-23T01:25:02.627963Z","signature_b64":"hufEPehrSVgPGRSEvJENfkhy8spW6amMVAbuX4MqOcfkFx662ptNRBozZ+nnxx3u0rRnVNB5kBs8Tg+oCiIECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85dbc4038f0796368b91463048ef33867117aa57903bb49f6f2bd7242f51c3ad","last_reissued_at":"2026-07-23T01:25:02.627152Z","signature_status":"signed_v1","first_computed_at":"2026-07-23T01:25:02.627152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Modeling the HI-Halo Connection: Evolution, Scatter, and a Halo-based Prescription for 21-cm Mock Catalogs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Fabio Fontanot, Gabriella De Lucia, Lizhi Xie, Marta Spinelli, Michaela Hirschmann, Mohd Kamran","submitted_at":"2026-07-22T13:26:39Z","abstract_excerpt":"The redshifted 21-cm line of neutral hydrogen (HI) is a powerful tracer of large-scale structure, and post-reionization HI intensity mapping is emerging as a competitive cosmological probe whose interpretation requires a description of how HI populates galaxies and dark matter halos. We characterize the HI--halo mass relation, its redshift evolution, and its intrinsic scatter, identifying its secondary dependences. We use the updated GAlaxy Evolution and Assembly (GAEA) semi-analytic model, applied to the Millennium-I and Millennium-II simulations, to predict the HI mass function (HIMF) and th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.20123","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/2607.20123/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":"2607.20123","created_at":"2026-07-23T01:25:02.627572+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.20123v1","created_at":"2026-07-23T01:25:02.627572+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.20123","created_at":"2026-07-23T01:25:02.627572+00:00"},{"alias_kind":"pith_short_12","alias_value":"QXN4IA4PA6LD","created_at":"2026-07-23T01:25:02.627572+00:00"},{"alias_kind":"pith_short_16","alias_value":"QXN4IA4PA6LDNC4R","created_at":"2026-07-23T01:25:02.627572+00:00"},{"alias_kind":"pith_short_8","alias_value":"QXN4IA4P","created_at":"2026-07-23T01:25:02.627572+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/QXN4IA4PA6LDNC4RIYYER3ZTQZ","json":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ.json","graph_json":"https://pith.science/api/pith-number/QXN4IA4PA6LDNC4RIYYER3ZTQZ/graph.json","events_json":"https://pith.science/api/pith-number/QXN4IA4PA6LDNC4RIYYER3ZTQZ/events.json","paper":"https://pith.science/paper/QXN4IA4P"},"agent_actions":{"view_html":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ","download_json":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ.json","view_paper":"https://pith.science/paper/QXN4IA4P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.20123&json=true","fetch_graph":"https://pith.science/api/pith-number/QXN4IA4PA6LDNC4RIYYER3ZTQZ/graph.json","fetch_events":"https://pith.science/api/pith-number/QXN4IA4PA6LDNC4RIYYER3ZTQZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ/action/storage_attestation","attest_author":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ/action/author_attestation","sign_citation":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ/action/citation_signature","submit_replication":"https://pith.science/pith/QXN4IA4PA6LDNC4RIYYER3ZTQZ/action/replication_record"}},"created_at":"2026-07-23T01:25:02.627572+00:00","updated_at":"2026-07-23T01:25:02.627572+00:00"}