{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:I2HIB44TISPP5KJX5GDN2TENM3","short_pith_number":"pith:I2HIB44T","schema_version":"1.0","canonical_sha256":"468e80f393449efea937e986dd4c8d66d616816cddc1965b2d1ed1cca2cbf42d","source":{"kind":"arxiv","id":"2505.08856","version":1},"attestation_state":"computed","paper":{"title":"Expanding Ejecta Method: II. Framework for Cosmological Distance Measurements via Intensity Interferometry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"David Dunsky, I-Kai Chen, Junwu Huang, Ken Van Tilburg, Robert V. Wagoner","submitted_at":"2025-05-13T18:00:00Z","abstract_excerpt":"We explore the potential of the expanding ejecta method (EEM) as a cosmological probe, leveraging its ability to measure angular diameter distances to supernovae (SNe) with intensity interferometry. We propose three distinct applications of the EEM: (1) using Type IIP SNe as moderate-distance geometric anchors to calibrate Cepheids, replacing other local distance indicators; (2) directly calibrating Type Ia SNe, bypassing conventional calibration methods; (3) constructing a fully independent Hubble diagram with Type IIP (Type Ia) SNe, entirely decoupled from the traditional distance ladder. In"},"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":"2505.08856","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-05-13T18:00:00Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"2fc130e819777f539dcb1ab4bfd4d6c20d74aa83fa954f6f1bf3211ebd5b3fd7","abstract_canon_sha256":"6ccdb4093724c0a48b4cb1f9855305cd0d2f2ea8a145d3e53736b48b9914b2aa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:02:45.854572Z","signature_b64":"hSGnM7Y82oxQkzTJ5HoY7H9eDnN6tnJcewu8JzFn7xSzOdz9vSge7xjjKoVTc7DGnb6KsmrweliojqVgDs02Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"468e80f393449efea937e986dd4c8d66d616816cddc1965b2d1ed1cca2cbf42d","last_reissued_at":"2026-07-05T11:02:45.854049Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:02:45.854049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Expanding Ejecta Method: II. Framework for Cosmological Distance Measurements via Intensity Interferometry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"David Dunsky, I-Kai Chen, Junwu Huang, Ken Van Tilburg, Robert V. Wagoner","submitted_at":"2025-05-13T18:00:00Z","abstract_excerpt":"We explore the potential of the expanding ejecta method (EEM) as a cosmological probe, leveraging its ability to measure angular diameter distances to supernovae (SNe) with intensity interferometry. We propose three distinct applications of the EEM: (1) using Type IIP SNe as moderate-distance geometric anchors to calibrate Cepheids, replacing other local distance indicators; (2) directly calibrating Type Ia SNe, bypassing conventional calibration methods; (3) constructing a fully independent Hubble diagram with Type IIP (Type Ia) SNe, entirely decoupled from the traditional distance ladder. In"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.08856","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/2505.08856/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":"2505.08856","created_at":"2026-07-05T11:02:45.854118+00:00"},{"alias_kind":"arxiv_version","alias_value":"2505.08856v1","created_at":"2026-07-05T11:02:45.854118+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.08856","created_at":"2026-07-05T11:02:45.854118+00:00"},{"alias_kind":"pith_short_12","alias_value":"I2HIB44TISPP","created_at":"2026-07-05T11:02:45.854118+00:00"},{"alias_kind":"pith_short_16","alias_value":"I2HIB44TISPP5KJX","created_at":"2026-07-05T11:02:45.854118+00:00"},{"alias_kind":"pith_short_8","alias_value":"I2HIB44T","created_at":"2026-07-05T11:02:45.854118+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/I2HIB44TISPP5KJX5GDN2TENM3","json":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3.json","graph_json":"https://pith.science/api/pith-number/I2HIB44TISPP5KJX5GDN2TENM3/graph.json","events_json":"https://pith.science/api/pith-number/I2HIB44TISPP5KJX5GDN2TENM3/events.json","paper":"https://pith.science/paper/I2HIB44T"},"agent_actions":{"view_html":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3","download_json":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3.json","view_paper":"https://pith.science/paper/I2HIB44T","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2505.08856&json=true","fetch_graph":"https://pith.science/api/pith-number/I2HIB44TISPP5KJX5GDN2TENM3/graph.json","fetch_events":"https://pith.science/api/pith-number/I2HIB44TISPP5KJX5GDN2TENM3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3/action/storage_attestation","attest_author":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3/action/author_attestation","sign_citation":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3/action/citation_signature","submit_replication":"https://pith.science/pith/I2HIB44TISPP5KJX5GDN2TENM3/action/replication_record"}},"created_at":"2026-07-05T11:02:45.854118+00:00","updated_at":"2026-07-05T11:02:45.854118+00:00"}