{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:H6STHPRFTYOMN7EPFYOEBCT7QQ","short_pith_number":"pith:H6STHPRF","schema_version":"1.0","canonical_sha256":"3fa533be259e1cc6fc8f2e1c408a7f841fe3e781f75db91274a8fed8e629a5e0","source":{"kind":"arxiv","id":"2606.07679","version":1},"attestation_state":"computed","paper":{"title":"PyCBC Live Search for Compact Binary Mergers in Advanced LIGO and Virgo's Fourth Observing Run","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc"],"primary_cat":"astro-ph.IM","authors_text":"Arthur Tolley, Gareth S. Cabourn Davies, Ian Harry, Max Trevor, Stephanie Hoang, Thomas Dent, Tito Dal Canton","submitted_at":"2026-06-04T20:44:12Z","abstract_excerpt":"PyCBC Live is a low-latency search pipeline that identifies gravitational waves from compact binary coalescences and provides alerts for electromagnetic follow-up. This paper presents improvements to PyCBC Live that were implemented for the fourth observing run (O4) of the LIGO-Virgo-KAGRA network, which operated from May 2023 to November 2025. The ranking statistic was enhanced to incorporate time-dependent background modeling using data quality streams and daily updates of the noise model. Follow-up capabilities were improved through refined probability of astrophysical origin calculations, "},"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":"2606.07679","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-04T20:44:12Z","cross_cats_sorted":["astro-ph.HE","gr-qc"],"title_canon_sha256":"37da6dd15d98129d71b6f81d886f6f0f07bcbea336028014bda7906eb9ab5341","abstract_canon_sha256":"5dc762a8e15a20b675b9afcd044e8095614628e1d9ea95cf36ff3488fd91d951"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T00:04:46.568562Z","signature_b64":"LGcmTVlGgYzzKEsxXgBh9dpleCq9XHIpWdAM1bNH8uV0mguBBCKgG0YlbJBbMDIx7HCC5FHPM7UPwY12ad7FCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fa533be259e1cc6fc8f2e1c408a7f841fe3e781f75db91274a8fed8e629a5e0","last_reissued_at":"2026-06-09T00:04:46.568163Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T00:04:46.568163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"PyCBC Live Search for Compact Binary Mergers in Advanced LIGO and Virgo's Fourth Observing Run","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc"],"primary_cat":"astro-ph.IM","authors_text":"Arthur Tolley, Gareth S. Cabourn Davies, Ian Harry, Max Trevor, Stephanie Hoang, Thomas Dent, Tito Dal Canton","submitted_at":"2026-06-04T20:44:12Z","abstract_excerpt":"PyCBC Live is a low-latency search pipeline that identifies gravitational waves from compact binary coalescences and provides alerts for electromagnetic follow-up. This paper presents improvements to PyCBC Live that were implemented for the fourth observing run (O4) of the LIGO-Virgo-KAGRA network, which operated from May 2023 to November 2025. The ranking statistic was enhanced to incorporate time-dependent background modeling using data quality streams and daily updates of the noise model. Follow-up capabilities were improved through refined probability of astrophysical origin calculations, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.07679","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/2606.07679/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":"2606.07679","created_at":"2026-06-09T00:04:46.568227+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.07679v1","created_at":"2026-06-09T00:04:46.568227+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.07679","created_at":"2026-06-09T00:04:46.568227+00:00"},{"alias_kind":"pith_short_12","alias_value":"H6STHPRFTYOM","created_at":"2026-06-09T00:04:46.568227+00:00"},{"alias_kind":"pith_short_16","alias_value":"H6STHPRFTYOMN7EP","created_at":"2026-06-09T00:04:46.568227+00:00"},{"alias_kind":"pith_short_8","alias_value":"H6STHPRF","created_at":"2026-06-09T00:04:46.568227+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/H6STHPRFTYOMN7EPFYOEBCT7QQ","json":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ.json","graph_json":"https://pith.science/api/pith-number/H6STHPRFTYOMN7EPFYOEBCT7QQ/graph.json","events_json":"https://pith.science/api/pith-number/H6STHPRFTYOMN7EPFYOEBCT7QQ/events.json","paper":"https://pith.science/paper/H6STHPRF"},"agent_actions":{"view_html":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ","download_json":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ.json","view_paper":"https://pith.science/paper/H6STHPRF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.07679&json=true","fetch_graph":"https://pith.science/api/pith-number/H6STHPRFTYOMN7EPFYOEBCT7QQ/graph.json","fetch_events":"https://pith.science/api/pith-number/H6STHPRFTYOMN7EPFYOEBCT7QQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ/action/storage_attestation","attest_author":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ/action/author_attestation","sign_citation":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ/action/citation_signature","submit_replication":"https://pith.science/pith/H6STHPRFTYOMN7EPFYOEBCT7QQ/action/replication_record"}},"created_at":"2026-06-09T00:04:46.568227+00:00","updated_at":"2026-06-09T00:04:46.568227+00:00"}