{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:4AUVFHRMYQ6BTLTZLBZY2D5OMH","short_pith_number":"pith:4AUVFHRM","schema_version":"1.0","canonical_sha256":"e029529e2cc43c19ae7958738d0fae61d6a0ec398cf09ead7efb2ebf70f19658","source":{"kind":"arxiv","id":"2106.08935","version":2},"attestation_state":"computed","paper":{"title":"A Gravitationally Lensed Supernova with an Observable Two-Decade Time Delay","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gabriel B. Brammer, Johan Richard, Justin D. R. Pierel, Katherine Whitaker, Kyle F. O'Connor, Mohammad Akhshik, Steven A. Rodney, Sune Toft","submitted_at":"2021-06-16T16:45:39Z","abstract_excerpt":"When the light from a distant object passes very near to a foreground galaxy or cluster, gravitational lensing can cause it to appear as multiple images on the sky. If the source is variable, it can be used to constrain the cosmic expansion rate and dark energy models. Achieving these cosmological goals requires many lensed transients with precise time delay measurements. Lensed supernovae (SN) are attractive for this purpose because they have relatively simple photometric behavior, with well-understood light curve shapes and colours $-$ in contrast to the stochastic variation of quasars. Here"},"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":"2106.08935","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-06-16T16:45:39Z","cross_cats_sorted":[],"title_canon_sha256":"4de9f24a70f68fc16fbf13a69ce2f37d5568915e2f9af07a1a81b9be23dfb47a","abstract_canon_sha256":"f28868dc595ac7876f452372d215af49893877f2fc55f9618dbed1248d8082e8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:56:58.733616Z","signature_b64":"l9QFxvhW8V883SWIir85A3obE5zFEj+rULiP3zAV3r6w+NGJtPQFB/0ItJWAkAULvmm7H552MFBc6//pr7OxCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e029529e2cc43c19ae7958738d0fae61d6a0ec398cf09ead7efb2ebf70f19658","last_reissued_at":"2026-07-05T02:56:58.733074Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:56:58.733074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Gravitationally Lensed Supernova with an Observable Two-Decade Time Delay","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gabriel B. Brammer, Johan Richard, Justin D. R. Pierel, Katherine Whitaker, Kyle F. O'Connor, Mohammad Akhshik, Steven A. Rodney, Sune Toft","submitted_at":"2021-06-16T16:45:39Z","abstract_excerpt":"When the light from a distant object passes very near to a foreground galaxy or cluster, gravitational lensing can cause it to appear as multiple images on the sky. If the source is variable, it can be used to constrain the cosmic expansion rate and dark energy models. Achieving these cosmological goals requires many lensed transients with precise time delay measurements. Lensed supernovae (SN) are attractive for this purpose because they have relatively simple photometric behavior, with well-understood light curve shapes and colours $-$ in contrast to the stochastic variation of quasars. Here"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.08935","kind":"arxiv","version":2},"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/2106.08935/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":"2106.08935","created_at":"2026-07-05T02:56:58.733126+00:00"},{"alias_kind":"arxiv_version","alias_value":"2106.08935v2","created_at":"2026-07-05T02:56:58.733126+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.08935","created_at":"2026-07-05T02:56:58.733126+00:00"},{"alias_kind":"pith_short_12","alias_value":"4AUVFHRMYQ6B","created_at":"2026-07-05T02:56:58.733126+00:00"},{"alias_kind":"pith_short_16","alias_value":"4AUVFHRMYQ6BTLTZ","created_at":"2026-07-05T02:56:58.733126+00:00"},{"alias_kind":"pith_short_8","alias_value":"4AUVFHRM","created_at":"2026-07-05T02:56:58.733126+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.08090","citing_title":"Multi-wavelength Constraints on the Transient EP250905a","ref_index":13,"is_internal_anchor":true},{"citing_arxiv_id":"2203.06142","citing_title":"Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies","ref_index":11,"is_internal_anchor":false},{"citing_arxiv_id":"2604.27511","citing_title":"Finding Strongly Lensed Supernovae from Blended Light Curves","ref_index":22,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH","json":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH.json","graph_json":"https://pith.science/api/pith-number/4AUVFHRMYQ6BTLTZLBZY2D5OMH/graph.json","events_json":"https://pith.science/api/pith-number/4AUVFHRMYQ6BTLTZLBZY2D5OMH/events.json","paper":"https://pith.science/paper/4AUVFHRM"},"agent_actions":{"view_html":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH","download_json":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH.json","view_paper":"https://pith.science/paper/4AUVFHRM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2106.08935&json=true","fetch_graph":"https://pith.science/api/pith-number/4AUVFHRMYQ6BTLTZLBZY2D5OMH/graph.json","fetch_events":"https://pith.science/api/pith-number/4AUVFHRMYQ6BTLTZLBZY2D5OMH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH/action/storage_attestation","attest_author":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH/action/author_attestation","sign_citation":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH/action/citation_signature","submit_replication":"https://pith.science/pith/4AUVFHRMYQ6BTLTZLBZY2D5OMH/action/replication_record"}},"created_at":"2026-07-05T02:56:58.733126+00:00","updated_at":"2026-07-05T02:56:58.733126+00:00"}