{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:FFT4UHHKPT6KNJQYB7YHIAS557","short_pith_number":"pith:FFT4UHHK","schema_version":"1.0","canonical_sha256":"2967ca1cea7cfca6a6180ff074025defe15e8f2eeade974e7be39e5cdf4fb621","source":{"kind":"arxiv","id":"1810.12302","version":2},"attestation_state":"computed","paper":{"title":"Most Lensed Quasars at $z>6$ are Missed by Current Surveys","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":"Abraham Loeb, Fabio Pacucci","submitted_at":"2018-10-29T18:00:01Z","abstract_excerpt":"The discovery of the first strongly lensed $(\\mu \\approx 50)$ quasar at $z>6$ (J0439+1634) represents a breakthrough in our understanding of the early Universe. We derive the theoretical consequences of the new discovery. We predict that the observed population of $z > 6$ quasars should contain many sources with magnifications $\\mu \\lesssim 10$ and with image separations below the resolution threshold. Additionally, current selection criteria could have missed a substantial population of lensed $z > 6$ quasars, due to the contamination of the drop-out photometric bands by lens galaxies. We arg"},"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":"1810.12302","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-29T18:00:01Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"cf56a7fc5050c6932c6e5e7daedfe7537fd161086b433012dd0de41a660a4f35","abstract_canon_sha256":"fd0d6fd6d8a29ad7843fe925409fd398857f7fb4f7355e7a94169aad281b11b9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:52.700508Z","signature_b64":"EeDFUsUJJMNEkefZaLff8RmFuu8TRe4vXjkyhR18TuSnIn2uqDsMfhxGK66VJ70O5iE6GOY30jESvBTfF4RpDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2967ca1cea7cfca6a6180ff074025defe15e8f2eeade974e7be39e5cdf4fb621","last_reissued_at":"2026-05-17T23:56:52.700142Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:52.700142Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Most Lensed Quasars at $z>6$ are Missed by Current Surveys","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":"Abraham Loeb, Fabio Pacucci","submitted_at":"2018-10-29T18:00:01Z","abstract_excerpt":"The discovery of the first strongly lensed $(\\mu \\approx 50)$ quasar at $z>6$ (J0439+1634) represents a breakthrough in our understanding of the early Universe. We derive the theoretical consequences of the new discovery. We predict that the observed population of $z > 6$ quasars should contain many sources with magnifications $\\mu \\lesssim 10$ and with image separations below the resolution threshold. Additionally, current selection criteria could have missed a substantial population of lensed $z > 6$ quasars, due to the contamination of the drop-out photometric bands by lens galaxies. We arg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.12302","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":""},"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":"1810.12302","created_at":"2026-05-17T23:56:52.700205+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.12302v2","created_at":"2026-05-17T23:56:52.700205+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.12302","created_at":"2026-05-17T23:56:52.700205+00:00"},{"alias_kind":"pith_short_12","alias_value":"FFT4UHHKPT6K","created_at":"2026-05-18T12:32:22.470017+00:00"},{"alias_kind":"pith_short_16","alias_value":"FFT4UHHKPT6KNJQY","created_at":"2026-05-18T12:32:22.470017+00:00"},{"alias_kind":"pith_short_8","alias_value":"FFT4UHHK","created_at":"2026-05-18T12:32:22.470017+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/FFT4UHHKPT6KNJQYB7YHIAS557","json":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557.json","graph_json":"https://pith.science/api/pith-number/FFT4UHHKPT6KNJQYB7YHIAS557/graph.json","events_json":"https://pith.science/api/pith-number/FFT4UHHKPT6KNJQYB7YHIAS557/events.json","paper":"https://pith.science/paper/FFT4UHHK"},"agent_actions":{"view_html":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557","download_json":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557.json","view_paper":"https://pith.science/paper/FFT4UHHK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.12302&json=true","fetch_graph":"https://pith.science/api/pith-number/FFT4UHHKPT6KNJQYB7YHIAS557/graph.json","fetch_events":"https://pith.science/api/pith-number/FFT4UHHKPT6KNJQYB7YHIAS557/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557/action/storage_attestation","attest_author":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557/action/author_attestation","sign_citation":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557/action/citation_signature","submit_replication":"https://pith.science/pith/FFT4UHHKPT6KNJQYB7YHIAS557/action/replication_record"}},"created_at":"2026-05-17T23:56:52.700205+00:00","updated_at":"2026-05-17T23:56:52.700205+00:00"}