{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:UTGEVXMZBDDEFETFKWD3PNQMZP","short_pith_number":"pith:UTGEVXMZ","schema_version":"1.0","canonical_sha256":"a4cc4add9908c64292655587b7b60ccbd218584af5c3920fad4ae5159c3c62c2","source":{"kind":"arxiv","id":"2603.05597","version":2},"attestation_state":"computed","paper":{"title":"Weighing gas-rich starless halos: dark matter parameters inference from their gas distributions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Virial masses of starless dark matter halos are reliably recovered from their neutral hydrogen gas distributions","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alejandro Benitez-Llambay (1) ((1) University of Milano-Bicocca), Francesco Turini (1)","submitted_at":"2026-03-05T19:00:12Z","abstract_excerpt":"Reionization-Limited $H_{I}$ Clouds (RELHICs) are starless dark matter halos retaining a significant neutral hydrogen($H_{I}$ ) reservoir. The gas resides in near hydrostatic equilibrium within the dark matter potential and in thermal equilibrium with the cosmic ultraviolet background. This simplicity allows analytic frameworks to link observable $H_{I}$ column densities directly to fundamental dark matter halo structural parameters. We systematically assess the accuracy of inferring host halo parameters from RELHIC gas distributions on an object-by-object basis, quantifying biases, intrinsic "},"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":true,"formal_links_present":false},"canonical_record":{"source":{"id":"2603.05597","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-03-05T19:00:12Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e107e28306abe123c066f73c550f89ddc164f2e8c02aa14cf01a0d0caab5f321","abstract_canon_sha256":"f5cd7c1c059f93607eb565f456871e9839ffe0fa6821f83c7ed8a009db49a485"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:15.863083Z","signature_b64":"Rp3RUKl8/55FPAxIOfh0xZbgljE4EiPpjT9TNVaR6QlhWgifmGWT+IrSPirTiNqEO/I59PJFQgFOmi2vDoWzCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a4cc4add9908c64292655587b7b60ccbd218584af5c3920fad4ae5159c3c62c2","last_reissued_at":"2026-05-17T23:39:15.862354Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:15.862354Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Weighing gas-rich starless halos: dark matter parameters inference from their gas distributions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Virial masses of starless dark matter halos are reliably recovered from their neutral hydrogen gas distributions","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alejandro Benitez-Llambay (1) ((1) University of Milano-Bicocca), Francesco Turini (1)","submitted_at":"2026-03-05T19:00:12Z","abstract_excerpt":"Reionization-Limited $H_{I}$ Clouds (RELHICs) are starless dark matter halos retaining a significant neutral hydrogen($H_{I}$ ) reservoir. The gas resides in near hydrostatic equilibrium within the dark matter potential and in thermal equilibrium with the cosmic ultraviolet background. This simplicity allows analytic frameworks to link observable $H_{I}$ column densities directly to fundamental dark matter halo structural parameters. We systematically assess the accuracy of inferring host halo parameters from RELHIC gas distributions on an object-by-object basis, quantifying biases, intrinsic "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"the virial mass is exceptionally well constrained, establishing a highly reliable framework for weighing starless halos in upcoming surveys","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The gas resides in near hydrostatic equilibrium within the dark matter potential and in thermal equilibrium with the cosmic ultraviolet background. This simplicity allows analytic frameworks to link observable HI column densities directly to fundamental dark matter halo structural parameters.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Virial masses of RELHICs are robustly recovered from their HI gas profiles via Bayesian nested sampling, with environmental density as a free parameter eliminating systematic mass biases from mass-concentration degeneracies.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Virial masses of starless dark matter halos are reliably recovered from their neutral hydrogen gas distributions","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"8f730e5dc1c92326c432f9e1536b70e60b834f3a27bf2580cefa9493a68a333b"},"source":{"id":"2603.05597","kind":"arxiv","version":2},"verdict":{"id":"5708f853-0b67-49a4-96d9-e84afbb6e703","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T14:40:15.338041Z","strongest_claim":"the virial mass is exceptionally well constrained, establishing a highly reliable framework for weighing starless halos in upcoming surveys","one_line_summary":"Virial masses of RELHICs are robustly recovered from their HI gas profiles via Bayesian nested sampling, with environmental density as a free parameter eliminating systematic mass biases from mass-concentration degeneracies.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The gas resides in near hydrostatic equilibrium within the dark matter potential and in thermal equilibrium with the cosmic ultraviolet background. This simplicity allows analytic frameworks to link observable HI column densities directly to fundamental dark matter halo structural parameters.","pith_extraction_headline":"Virial masses of starless dark matter halos are reliably recovered from their neutral hydrogen gas distributions"},"references":{"count":53,"sample":[{"doi":"","year":2025,"title":"S., Ben´ ıtez-Llambay, A., Beaton, R., et al","work_id":"b69547f0-3f3e-4a08-b51d-5a1bd8435f8f","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2012,"title":"E., Springel, V ., White, S","work_id":"1a032b15-7a44-4804-b796-c73f1d588c9e","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2015,"title":"Benitez-Llambay, A. 2015, py-sphviewer: Py-SPHViewer v1.0.0 Benítez-Llambay, A., Dutta, R., Fumagalli, M., & Navarro, J. F. 2024, ApJ, 973, 61","work_id":"b2412cd7-ef6f-4def-ba42-a008db54c9bd","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"Benitez-Llambay, A. & Frenk, C. 2020, MNRAS, 498, 4887 Benítez-Llambay, A., Frenk, C. S., Ludlow, A. D., & Navarro, J. F. 2019, MN- RAS, 488, 2387","work_id":"5da4d044-2c13-457c-97f6-bb60cfc0b040","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2021,"title":"Benitez-Llambay, A. & Fumagalli, M. 2021, ApJ, 921, L9","work_id":"7c7d3b2d-5e89-4ae9-ad74-42774379109c","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":53,"snapshot_sha256":"d1ae2fb4f1989f056c93f668237dc8b2de7f0fe252662c93a763dbeb2f6c364f","internal_anchors":1},"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":"2603.05597","created_at":"2026-05-17T23:39:15.862482+00:00"},{"alias_kind":"arxiv_version","alias_value":"2603.05597v2","created_at":"2026-05-17T23:39:15.862482+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.05597","created_at":"2026-05-17T23:39:15.862482+00:00"},{"alias_kind":"pith_short_12","alias_value":"UTGEVXMZBDDE","created_at":"2026-05-18T12:33:37.589309+00:00"},{"alias_kind":"pith_short_16","alias_value":"UTGEVXMZBDDEFETF","created_at":"2026-05-18T12:33:37.589309+00:00"},{"alias_kind":"pith_short_8","alias_value":"UTGEVXMZ","created_at":"2026-05-18T12:33:37.589309+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2604.27047","citing_title":"Beyond Cloud-9: The case for discovering more HI-rich failed halos","ref_index":44,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP","json":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP.json","graph_json":"https://pith.science/api/pith-number/UTGEVXMZBDDEFETFKWD3PNQMZP/graph.json","events_json":"https://pith.science/api/pith-number/UTGEVXMZBDDEFETFKWD3PNQMZP/events.json","paper":"https://pith.science/paper/UTGEVXMZ"},"agent_actions":{"view_html":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP","download_json":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP.json","view_paper":"https://pith.science/paper/UTGEVXMZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2603.05597&json=true","fetch_graph":"https://pith.science/api/pith-number/UTGEVXMZBDDEFETFKWD3PNQMZP/graph.json","fetch_events":"https://pith.science/api/pith-number/UTGEVXMZBDDEFETFKWD3PNQMZP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP/action/storage_attestation","attest_author":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP/action/author_attestation","sign_citation":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP/action/citation_signature","submit_replication":"https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP/action/replication_record"}},"created_at":"2026-05-17T23:39:15.862482+00:00","updated_at":"2026-05-17T23:39:15.862482+00:00"}