{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:PLFHQTRKRAK2AJNVADN75VOMYP","short_pith_number":"pith:PLFHQTRK","schema_version":"1.0","canonical_sha256":"7aca784e2a8815a025b500dbfed5ccc3cc14a67c5dcfd26e23113c0b49244f3f","source":{"kind":"arxiv","id":"2606.23808","version":1},"attestation_state":"computed","paper":{"title":"First measurement of narrow-line flux ratios for a lensed quasar with JWST/NIRSpec IFS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Anna M. Nierenberg, Anowar J. Shajib, Daniel Gilman, Hadrien Paugnat, Shawn Knabel, Tommaso Treu","submitted_at":"2026-06-22T18:00:10Z","abstract_excerpt":"Strong gravitational lensing is a powerful probe of dark matter (DM) structure on subgalactic scales: in particular, statistics of flux-ratio anomalies (discrepancies between mass model predictions and observed flux ratios) in quadruply imaged quasars are sensitive to perturbations by low-mass DM halos down to $\\sim 10^6 M_\\odot$. Studies leveraging these anomalies require high-quality flux-ratio measurements from an emission region insensitive to stellar microlensing. In this paper, we present the first measurement of narrow-line flux ratios for a gravitationally lensed quasar using JWST/NIRS"},"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":"2606.23808","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-22T18:00:10Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"37de89d99bd50a1fcae2f322da406f18ee6e87728bef04502698efe6ebce5d37","abstract_canon_sha256":"380283a84d04fe534039f1a446d8a569e0abac6ac8f7ba652b7bbc46028da39f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-24T00:14:27.507800Z","signature_b64":"iVeg4iM2NDHti0ioJi8n3Enqsc+nMij3JtF28BRf31psvxSsm9ZFqH90VZyOVjypzz3Wk0WDwbCDPiMe+rWfAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7aca784e2a8815a025b500dbfed5ccc3cc14a67c5dcfd26e23113c0b49244f3f","last_reissued_at":"2026-06-24T00:14:27.507439Z","signature_status":"signed_v1","first_computed_at":"2026-06-24T00:14:27.507439Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"First measurement of narrow-line flux ratios for a lensed quasar with JWST/NIRSpec IFS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Anna M. Nierenberg, Anowar J. Shajib, Daniel Gilman, Hadrien Paugnat, Shawn Knabel, Tommaso Treu","submitted_at":"2026-06-22T18:00:10Z","abstract_excerpt":"Strong gravitational lensing is a powerful probe of dark matter (DM) structure on subgalactic scales: in particular, statistics of flux-ratio anomalies (discrepancies between mass model predictions and observed flux ratios) in quadruply imaged quasars are sensitive to perturbations by low-mass DM halos down to $\\sim 10^6 M_\\odot$. Studies leveraging these anomalies require high-quality flux-ratio measurements from an emission region insensitive to stellar microlensing. In this paper, we present the first measurement of narrow-line flux ratios for a gravitationally lensed quasar using JWST/NIRS"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23808","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/2606.23808/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":"2606.23808","created_at":"2026-06-24T00:14:27.507498+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.23808v1","created_at":"2026-06-24T00:14:27.507498+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23808","created_at":"2026-06-24T00:14:27.507498+00:00"},{"alias_kind":"pith_short_12","alias_value":"PLFHQTRKRAK2","created_at":"2026-06-24T00:14:27.507498+00:00"},{"alias_kind":"pith_short_16","alias_value":"PLFHQTRKRAK2AJNV","created_at":"2026-06-24T00:14:27.507498+00:00"},{"alias_kind":"pith_short_8","alias_value":"PLFHQTRK","created_at":"2026-06-24T00:14:27.507498+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/PLFHQTRKRAK2AJNVADN75VOMYP","json":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP.json","graph_json":"https://pith.science/api/pith-number/PLFHQTRKRAK2AJNVADN75VOMYP/graph.json","events_json":"https://pith.science/api/pith-number/PLFHQTRKRAK2AJNVADN75VOMYP/events.json","paper":"https://pith.science/paper/PLFHQTRK"},"agent_actions":{"view_html":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP","download_json":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP.json","view_paper":"https://pith.science/paper/PLFHQTRK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.23808&json=true","fetch_graph":"https://pith.science/api/pith-number/PLFHQTRKRAK2AJNVADN75VOMYP/graph.json","fetch_events":"https://pith.science/api/pith-number/PLFHQTRKRAK2AJNVADN75VOMYP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP/action/storage_attestation","attest_author":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP/action/author_attestation","sign_citation":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP/action/citation_signature","submit_replication":"https://pith.science/pith/PLFHQTRKRAK2AJNVADN75VOMYP/action/replication_record"}},"created_at":"2026-06-24T00:14:27.507498+00:00","updated_at":"2026-06-24T00:14:27.507498+00:00"}