{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6CAH34C6PKIGFHQ27PVSKOVUFI","short_pith_number":"pith:6CAH34C6","canonical_record":{"source":{"id":"1204.4218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-04-18T22:22:33Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5f5293eb2d11be53aa8217ab70b0e94919f064d88fb9c03aecdc903bf9e1d074","abstract_canon_sha256":"ad68cd2d17bc4eaadab344157b96a71f7e695e2184a092c3b571444b1c1ce353"},"schema_version":"1.0"},"canonical_sha256":"f0807df05e7a90629e1afbeb253ab42a0afd4e5b232bb921ed470613ca905851","source":{"kind":"arxiv","id":"1204.4218","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4218","created_at":"2026-05-18T01:57:49Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4218v1","created_at":"2026-05-18T01:57:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4218","created_at":"2026-05-18T01:57:49Z"},{"alias_kind":"pith_short_12","alias_value":"6CAH34C6PKIG","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6CAH34C6PKIGFHQ2","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6CAH34C6","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6CAH34C6PKIGFHQ27PVSKOVUFI","target":"record","payload":{"canonical_record":{"source":{"id":"1204.4218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-04-18T22:22:33Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5f5293eb2d11be53aa8217ab70b0e94919f064d88fb9c03aecdc903bf9e1d074","abstract_canon_sha256":"ad68cd2d17bc4eaadab344157b96a71f7e695e2184a092c3b571444b1c1ce353"},"schema_version":"1.0"},"canonical_sha256":"f0807df05e7a90629e1afbeb253ab42a0afd4e5b232bb921ed470613ca905851","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:49.031141Z","signature_b64":"cC3r37eb+t5svtRpTAXH0S7iEH6C9B12gOsrOJDcle9ud978xItvdRndifGcnIG263QE/B/cywpmSynQToJ5Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0807df05e7a90629e1afbeb253ab42a0afd4e5b232bb921ed470613ca905851","last_reissued_at":"2026-05-18T01:57:49.030595Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:49.030595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.4218","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FmHs5I1VeQZY7PZ8M9SMJSpRBkz7K3qj6gdbPQN9fc2sNx2+RRy0iPkV14NjDj+U/7uHmJj2+WubyKgb4DRiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T18:53:21.076450Z"},"content_sha256":"8244b52b6f49bced1acfb1da1d5f91d32eb4d878469ba799ff7e7cce9118317b","schema_version":"1.0","event_id":"sha256:8244b52b6f49bced1acfb1da1d5f91d32eb4d878469ba799ff7e7cce9118317b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6CAH34C6PKIGFHQ27PVSKOVUFI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimal strategies for continuous gravitational wave detection in pulsar timing arrays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.IM","authors_text":"Jolien Creighton, Justin Ellis, Xavier Siemens","submitted_at":"2012-04-18T22:22:33Z","abstract_excerpt":"Supermassive black hole binaries (SMBHBs) are expected to emit continuous gravitational waves in the pulsar timing array (PTA) frequency band ($10^{-9}$--$10^{-7}$ Hz). The development of data analysis techniques aimed at efficient detection and characterization of these signals is critical to the gravitational wave detection effort. In this paper we leverage methods developed for LIGO continuous wave gravitational searches, and explore the use of the $\\mathcal{F}$-statistic for such searches in pulsar timing data. Babak & Sesana 2012 have already used this approach in the context of PTAs to s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4218","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b+nWk476MgN9qslMAQaOnbqdxigDaHHBM3j3jMUWCxOg5b5sHDbvtdWdVNeurtsu6EvRqdId1CteZuyMK5dECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T18:53:21.076801Z"},"content_sha256":"19cd3a9d3203fa4f663333666debaf4789571ff4ff664754ac41a0291b9946cc","schema_version":"1.0","event_id":"sha256:19cd3a9d3203fa4f663333666debaf4789571ff4ff664754ac41a0291b9946cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6CAH34C6PKIGFHQ27PVSKOVUFI/bundle.json","state_url":"https://pith.science/pith/6CAH34C6PKIGFHQ27PVSKOVUFI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6CAH34C6PKIGFHQ27PVSKOVUFI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-29T18:53:21Z","links":{"resolver":"https://pith.science/pith/6CAH34C6PKIGFHQ27PVSKOVUFI","bundle":"https://pith.science/pith/6CAH34C6PKIGFHQ27PVSKOVUFI/bundle.json","state":"https://pith.science/pith/6CAH34C6PKIGFHQ27PVSKOVUFI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6CAH34C6PKIGFHQ27PVSKOVUFI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6CAH34C6PKIGFHQ27PVSKOVUFI","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":"ad68cd2d17bc4eaadab344157b96a71f7e695e2184a092c3b571444b1c1ce353","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-04-18T22:22:33Z","title_canon_sha256":"5f5293eb2d11be53aa8217ab70b0e94919f064d88fb9c03aecdc903bf9e1d074"},"schema_version":"1.0","source":{"id":"1204.4218","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4218","created_at":"2026-05-18T01:57:49Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4218v1","created_at":"2026-05-18T01:57:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4218","created_at":"2026-05-18T01:57:49Z"},{"alias_kind":"pith_short_12","alias_value":"6CAH34C6PKIG","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6CAH34C6PKIGFHQ2","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6CAH34C6","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:19cd3a9d3203fa4f663333666debaf4789571ff4ff664754ac41a0291b9946cc","target":"graph","created_at":"2026-05-18T01:57:49Z","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"},"paper":{"abstract_excerpt":"Supermassive black hole binaries (SMBHBs) are expected to emit continuous gravitational waves in the pulsar timing array (PTA) frequency band ($10^{-9}$--$10^{-7}$ Hz). The development of data analysis techniques aimed at efficient detection and characterization of these signals is critical to the gravitational wave detection effort. In this paper we leverage methods developed for LIGO continuous wave gravitational searches, and explore the use of the $\\mathcal{F}$-statistic for such searches in pulsar timing data. Babak & Sesana 2012 have already used this approach in the context of PTAs to s","authors_text":"Jolien Creighton, Justin Ellis, Xavier Siemens","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-04-18T22:22:33Z","title":"Optimal strategies for continuous gravitational wave detection in pulsar timing arrays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4218","kind":"arxiv","version":1},"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":"sha256:8244b52b6f49bced1acfb1da1d5f91d32eb4d878469ba799ff7e7cce9118317b","target":"record","created_at":"2026-05-18T01:57:49Z","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":"ad68cd2d17bc4eaadab344157b96a71f7e695e2184a092c3b571444b1c1ce353","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-04-18T22:22:33Z","title_canon_sha256":"5f5293eb2d11be53aa8217ab70b0e94919f064d88fb9c03aecdc903bf9e1d074"},"schema_version":"1.0","source":{"id":"1204.4218","kind":"arxiv","version":1}},"canonical_sha256":"f0807df05e7a90629e1afbeb253ab42a0afd4e5b232bb921ed470613ca905851","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0807df05e7a90629e1afbeb253ab42a0afd4e5b232bb921ed470613ca905851","first_computed_at":"2026-05-18T01:57:49.030595Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:49.030595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cC3r37eb+t5svtRpTAXH0S7iEH6C9B12gOsrOJDcle9ud978xItvdRndifGcnIG263QE/B/cywpmSynQToJ5Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:49.031141Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.4218","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8244b52b6f49bced1acfb1da1d5f91d32eb4d878469ba799ff7e7cce9118317b","sha256:19cd3a9d3203fa4f663333666debaf4789571ff4ff664754ac41a0291b9946cc"],"state_sha256":"4b1bad52fb5d645eb58b0f1b2226db064fdaf3e4c41fd85fe6c08f24fc60e661"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P1ea+4sFOoZcu0xyJVQGHa8ySiUkU6njdmfcJ/zlAMTrqRwUJqIN+N6bmykMog9dWD9MtQkbI/wr+7nsYymMCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T18:53:21.078689Z","bundle_sha256":"a155fb5a022308eccecefb4ed44b4aae816ee879e11417b0afff53c371f97828"}}