{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:6T663GNTMAFFPFUE47XDLGB4ZA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"6c47e03b3e6e873a03dc95005b8157d2272f10a59ca67c408ec59c5ec3ebaa29","cross_cats_sorted":["astro-ph.HE","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-07-06T18:00:01Z","title_canon_sha256":"fd049a0377864b2fea731a3d3fdeb485b8b90f8bc399654610237141f9517582"},"schema_version":"1.0","source":{"id":"2007.02943","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.02943","created_at":"2026-07-05T02:17:27Z"},{"alias_kind":"arxiv_version","alias_value":"2007.02943v2","created_at":"2026-07-05T02:17:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.02943","created_at":"2026-07-05T02:17:27Z"},{"alias_kind":"pith_short_12","alias_value":"6T663GNTMAFF","created_at":"2026-07-05T02:17:27Z"},{"alias_kind":"pith_short_16","alias_value":"6T663GNTMAFFPFUE","created_at":"2026-07-05T02:17:27Z"},{"alias_kind":"pith_short_8","alias_value":"6T663GNT","created_at":"2026-07-05T02:17:27Z"}],"graph_snapshots":[{"event_id":"sha256:3173fa50a5d87873a0b06ff15a62fe30cd3a2f34978b5ab723973c27bdeb614d","target":"graph","created_at":"2026-07-05T02:17:27Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2007.02943/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational waves can provide an accurate measurement of the luminosity distance to the source, but cannot provide the source redshift unless the degeneracy between mass and redshift can be broken. This makes it essential to infer the redshift of the source independently to measure the expansion history of the Universe. We show that by exploiting the clustering scale of the gravitational wave sources with galaxies of known redshift, we can infer the expansion history from redshift unknown gravitational wave sources. By using gravitational wave sources of unknown redshift that are detectable ","authors_text":"Alessandra Silvestri, Benjamin D. Wandelt, Samaya M. Nissanke, Suvodip Mukherjee","cross_cats":["astro-ph.HE","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-07-06T18:00:01Z","title":"Accurate precision Cosmology with redshift unknown gravitational wave sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.02943","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:7e09502908bb1c46c9a5d14b05ce04e7995efa2f9034da9018796be9a05228f5","target":"record","created_at":"2026-07-05T02:17:27Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"6c47e03b3e6e873a03dc95005b8157d2272f10a59ca67c408ec59c5ec3ebaa29","cross_cats_sorted":["astro-ph.HE","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-07-06T18:00:01Z","title_canon_sha256":"fd049a0377864b2fea731a3d3fdeb485b8b90f8bc399654610237141f9517582"},"schema_version":"1.0","source":{"id":"2007.02943","kind":"arxiv","version":2}},"canonical_sha256":"f4fded99b3600a579684e7ee35983cc812ac1d8f04bb812fb4a5c6f864d37dc6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4fded99b3600a579684e7ee35983cc812ac1d8f04bb812fb4a5c6f864d37dc6","first_computed_at":"2026-07-05T02:17:27.640408Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:17:27.640408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M2YmyzS11UUdTj7M3LEyhvdNwlQGd91cS+0QU8643dDFgY/KaXk8kv8iOq4s2UAP5tc7OfLa/gcovDiF6AXaCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:17:27.640889Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.02943","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e09502908bb1c46c9a5d14b05ce04e7995efa2f9034da9018796be9a05228f5","sha256:3173fa50a5d87873a0b06ff15a62fe30cd3a2f34978b5ab723973c27bdeb614d"],"state_sha256":"a46bd16ed184a1411808c6b210c667e6c30282f9372cfd359266bf7ddfafb197"}