{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:EFB7D5A7E3WEHI6WDQCKCHAAYI","short_pith_number":"pith:EFB7D5A7","canonical_record":{"source":{"id":"astro-ph/0207408","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-18T23:19:33Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"8625c7e8bc8962f470acaaeb10c4eccb9dda823f67f183032eb9712160f102c1","abstract_canon_sha256":"cf351afae750226009122b0c266b77ba723916539ebe5c0dad61e21cf0355d99"},"schema_version":"1.0"},"canonical_sha256":"2143f1f41f26ec43a3d61c04a11c00c21cda9b0889b45c0b06c10ab7f36641a3","source":{"kind":"arxiv","id":"astro-ph/0207408","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0207408","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0207408v2","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0207408","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"pith_short_12","alias_value":"EFB7D5A7E3WE","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"pith_short_16","alias_value":"EFB7D5A7E3WEHI6W","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"pith_short_8","alias_value":"EFB7D5A7","created_at":"2026-07-04T16:30:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:EFB7D5A7E3WEHI6WDQCKCHAAYI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0207408","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-18T23:19:33Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"8625c7e8bc8962f470acaaeb10c4eccb9dda823f67f183032eb9712160f102c1","abstract_canon_sha256":"cf351afae750226009122b0c266b77ba723916539ebe5c0dad61e21cf0355d99"},"schema_version":"1.0"},"canonical_sha256":"2143f1f41f26ec43a3d61c04a11c00c21cda9b0889b45c0b06c10ab7f36641a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:30:23.953113Z","signature_b64":"c04MBgS96hzy7becZuWU+X7XNfQX4b1xjfGfXNy4x28fEaeuKfP62sLlgJUp3wznzYVLk3M+tkRDi+exi0LLCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2143f1f41f26ec43a3d61c04a11c00c21cda9b0889b45c0b06c10ab7f36641a3","last_reissued_at":"2026-07-04T16:30:23.952706Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:30:23.952706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0207408","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:30:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w5BDezHc/aQ2xgQcz3G85U5j8tLAt1ZMYjrWCwoQZZlJNmrFwm0bOxvSBGIlmt8lD9LxA3ORM0tSPKSx0ch5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T06:09:56.219126Z"},"content_sha256":"be040865ecfed084ccb37e617c6942aa50e9306086d4f14a5af7ab5b8457025c","schema_version":"1.0","event_id":"sha256:be040865ecfed084ccb37e617c6942aa50e9306086d4f14a5af7ab5b8457025c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:EFB7D5A7E3WEHI6WDQCKCHAAYI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Probability Distribution of Binary Pulsar Coalescence Rates. I. Double Neutron Star Systems in the Galactic Field","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph","authors_text":"C. Kim, D. R. Lorimer, V. Kalogera","submitted_at":"2002-07-18T23:19:33Z","abstract_excerpt":"Estimates of the Galactic coalescence rate (R) of close binaries with two neutron stars (NS-NS) are known to be uncertain by large factors (about two orders of magnitude) mainly due to the small number of systems detected as binary radio pulsars. We present an analysis method that allows us to estimate the Galactic NS-NS coalescence rate using the current observed sample and, importantly, to assign a statistical significance to these estimates and to calculate the allowed ranges of values at various confidence levels. The method involves the simulation of selection effects inherent in all rele"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0207408","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0207408/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:30:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WMfvs1SN/WcgHO5MrCnrFs7yRiiHXRiIiikKkzQ/k/JynsV6L1L2NgUK9aYhZYi9gCPpmchrDpNZjrtAVS0uAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T06:09:56.219669Z"},"content_sha256":"291affc886b4c38e829e1c1d8effb3d413e51c130d089cce58adc6fd9aa7cdbd","schema_version":"1.0","event_id":"sha256:291affc886b4c38e829e1c1d8effb3d413e51c130d089cce58adc6fd9aa7cdbd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI/bundle.json","state_url":"https://pith.science/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI/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":"2026-08-19T06:09:56Z","links":{"resolver":"https://pith.science/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI","bundle":"https://pith.science/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI/bundle.json","state":"https://pith.science/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFB7D5A7E3WEHI6WDQCKCHAAYI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:EFB7D5A7E3WEHI6WDQCKCHAAYI","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":"cf351afae750226009122b0c266b77ba723916539ebe5c0dad61e21cf0355d99","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-18T23:19:33Z","title_canon_sha256":"8625c7e8bc8962f470acaaeb10c4eccb9dda823f67f183032eb9712160f102c1"},"schema_version":"1.0","source":{"id":"astro-ph/0207408","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0207408","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0207408v2","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0207408","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"pith_short_12","alias_value":"EFB7D5A7E3WE","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"pith_short_16","alias_value":"EFB7D5A7E3WEHI6W","created_at":"2026-07-04T16:30:23Z"},{"alias_kind":"pith_short_8","alias_value":"EFB7D5A7","created_at":"2026-07-04T16:30:23Z"}],"graph_snapshots":[{"event_id":"sha256:291affc886b4c38e829e1c1d8effb3d413e51c130d089cce58adc6fd9aa7cdbd","target":"graph","created_at":"2026-07-04T16:30:23Z","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/astro-ph/0207408/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Estimates of the Galactic coalescence rate (R) of close binaries with two neutron stars (NS-NS) are known to be uncertain by large factors (about two orders of magnitude) mainly due to the small number of systems detected as binary radio pulsars. We present an analysis method that allows us to estimate the Galactic NS-NS coalescence rate using the current observed sample and, importantly, to assign a statistical significance to these estimates and to calculate the allowed ranges of values at various confidence levels. The method involves the simulation of selection effects inherent in all rele","authors_text":"C. Kim, D. R. Lorimer, V. Kalogera","cross_cats":["gr-qc"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-07-18T23:19:33Z","title":"The Probability Distribution of Binary Pulsar Coalescence Rates. I. Double Neutron Star Systems in the Galactic Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0207408","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:be040865ecfed084ccb37e617c6942aa50e9306086d4f14a5af7ab5b8457025c","target":"record","created_at":"2026-07-04T16:30:23Z","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":"cf351afae750226009122b0c266b77ba723916539ebe5c0dad61e21cf0355d99","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-18T23:19:33Z","title_canon_sha256":"8625c7e8bc8962f470acaaeb10c4eccb9dda823f67f183032eb9712160f102c1"},"schema_version":"1.0","source":{"id":"astro-ph/0207408","kind":"arxiv","version":2}},"canonical_sha256":"2143f1f41f26ec43a3d61c04a11c00c21cda9b0889b45c0b06c10ab7f36641a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2143f1f41f26ec43a3d61c04a11c00c21cda9b0889b45c0b06c10ab7f36641a3","first_computed_at":"2026-07-04T16:30:23.952706Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:30:23.952706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c04MBgS96hzy7becZuWU+X7XNfQX4b1xjfGfXNy4x28fEaeuKfP62sLlgJUp3wznzYVLk3M+tkRDi+exi0LLCA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:30:23.953113Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0207408","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be040865ecfed084ccb37e617c6942aa50e9306086d4f14a5af7ab5b8457025c","sha256:291affc886b4c38e829e1c1d8effb3d413e51c130d089cce58adc6fd9aa7cdbd"],"state_sha256":"97bb8004c6e087f029d289e4c47a9690ca3209dac8e0942fc0c718e1063f13a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xFsOP7dhhRAKcPwlAy4/KQrbZaIox84KcgZgvkcKjVKqEISBN0ouT/Pzes82q+a+RVYJMr76p7A0SHX6ZqpOAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T06:09:56.224887Z","bundle_sha256":"00be9c660d29b21fa914fc44f6e75143934bcd80deaca90ac4bfa75ac4b631f9"}}