{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:SBOYCGWUYYHBK7QR74UDEFOQBU","short_pith_number":"pith:SBOYCGWU","canonical_record":{"source":{"id":"1210.5313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-19T04:43:33Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3f03d6386fc36caee3ff530d37252a4fd2a0f2ff2e53926edd1e0dabb5f97419","abstract_canon_sha256":"c8c9d327e7031cb6b07cd6eb15c80be228d866a4007b8388725d10d93a58796b"},"schema_version":"1.0"},"canonical_sha256":"905d811ad4c60e157e11ff283215d00d07205b062e29fa62a9a72e456868f158","source":{"kind":"arxiv","id":"1210.5313","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.5313","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"arxiv_version","alias_value":"1210.5313v1","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.5313","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"pith_short_12","alias_value":"SBOYCGWUYYHB","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SBOYCGWUYYHBK7QR","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SBOYCGWU","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:SBOYCGWUYYHBK7QR74UDEFOQBU","target":"record","payload":{"canonical_record":{"source":{"id":"1210.5313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-19T04:43:33Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3f03d6386fc36caee3ff530d37252a4fd2a0f2ff2e53926edd1e0dabb5f97419","abstract_canon_sha256":"c8c9d327e7031cb6b07cd6eb15c80be228d866a4007b8388725d10d93a58796b"},"schema_version":"1.0"},"canonical_sha256":"905d811ad4c60e157e11ff283215d00d07205b062e29fa62a9a72e456868f158","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:46.128094Z","signature_b64":"/VMADX1WROa2p11u/1+Yftygq6bojQL+wzlsWdrLxGa0gRkrRVI6Wj3djtmCtB7soQPiXn6hY5IpX2iZ3uLWDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"905d811ad4c60e157e11ff283215d00d07205b062e29fa62a9a72e456868f158","last_reissued_at":"2026-05-18T01:53:46.127442Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:46.127442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.5313","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":"2026-05-18T01:53:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M0E5xSRL4A9U+r+flZQWcldFhA2Dip4XTdJqFM37ePyarNpi9ot75U26n9Mnt2WUgUXsRGynjcWTp6xgQOVzCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:46:36.469354Z"},"content_sha256":"9ede4da5b8a5466e1342a299f2137b4a870ac284433103e521421ec38b056a91","schema_version":"1.0","event_id":"sha256:9ede4da5b8a5466e1342a299f2137b4a870ac284433103e521421ec38b056a91"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:SBOYCGWUYYHBK7QR74UDEFOQBU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search for the gravitational wave memory effect with the Parkes Pulsar Timing Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"G. Hobbs, Jingbo Wang, Na Wang","submitted_at":"2012-10-19T04:43:33Z","abstract_excerpt":"Gravitational wave bursts produced by supermassive binary black hole mergers will leave a persistent imprint on the space-time metric. Such gravitational wave memory signals are detectable by pulsar timing arrays as a glitch event that would seem to occur simultaneously for all pulsars. In this paper, we describe an initial algorithm which can be used to search for gravitational wave memory signals. We apply this algorithm to the Parkes Pulsar Timing Array data set. No significant gravitational wave memory signal is founded in the data set."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.5313","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":"2026-05-18T01:53:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uj2lUygV8TpbJanxBqwFTc2nXCKZLdfkgpaCAN6kx/4pYKR4EuYG+wbmgluDyc30TPINZ+9XF5KUChiFpwWgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:46:36.469838Z"},"content_sha256":"4283b07f85d4a4404a401394cd37021112e88868254f130e248530031a3d88af","schema_version":"1.0","event_id":"sha256:4283b07f85d4a4404a401394cd37021112e88868254f130e248530031a3d88af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SBOYCGWUYYHBK7QR74UDEFOQBU/bundle.json","state_url":"https://pith.science/pith/SBOYCGWUYYHBK7QR74UDEFOQBU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SBOYCGWUYYHBK7QR74UDEFOQBU/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":"2026-08-20T08:46:36Z","links":{"resolver":"https://pith.science/pith/SBOYCGWUYYHBK7QR74UDEFOQBU","bundle":"https://pith.science/pith/SBOYCGWUYYHBK7QR74UDEFOQBU/bundle.json","state":"https://pith.science/pith/SBOYCGWUYYHBK7QR74UDEFOQBU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SBOYCGWUYYHBK7QR74UDEFOQBU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:SBOYCGWUYYHBK7QR74UDEFOQBU","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":"c8c9d327e7031cb6b07cd6eb15c80be228d866a4007b8388725d10d93a58796b","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-19T04:43:33Z","title_canon_sha256":"3f03d6386fc36caee3ff530d37252a4fd2a0f2ff2e53926edd1e0dabb5f97419"},"schema_version":"1.0","source":{"id":"1210.5313","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.5313","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"arxiv_version","alias_value":"1210.5313v1","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.5313","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"pith_short_12","alias_value":"SBOYCGWUYYHB","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SBOYCGWUYYHBK7QR","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SBOYCGWU","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:4283b07f85d4a4404a401394cd37021112e88868254f130e248530031a3d88af","target":"graph","created_at":"2026-05-18T01:53:46Z","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":"Gravitational wave bursts produced by supermassive binary black hole mergers will leave a persistent imprint on the space-time metric. Such gravitational wave memory signals are detectable by pulsar timing arrays as a glitch event that would seem to occur simultaneously for all pulsars. In this paper, we describe an initial algorithm which can be used to search for gravitational wave memory signals. We apply this algorithm to the Parkes Pulsar Timing Array data set. No significant gravitational wave memory signal is founded in the data set.","authors_text":"G. Hobbs, Jingbo Wang, Na Wang","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-19T04:43:33Z","title":"Search for the gravitational wave memory effect with the Parkes Pulsar Timing Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.5313","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":"sha256:9ede4da5b8a5466e1342a299f2137b4a870ac284433103e521421ec38b056a91","target":"record","created_at":"2026-05-18T01:53:46Z","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":"c8c9d327e7031cb6b07cd6eb15c80be228d866a4007b8388725d10d93a58796b","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-19T04:43:33Z","title_canon_sha256":"3f03d6386fc36caee3ff530d37252a4fd2a0f2ff2e53926edd1e0dabb5f97419"},"schema_version":"1.0","source":{"id":"1210.5313","kind":"arxiv","version":1}},"canonical_sha256":"905d811ad4c60e157e11ff283215d00d07205b062e29fa62a9a72e456868f158","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"905d811ad4c60e157e11ff283215d00d07205b062e29fa62a9a72e456868f158","first_computed_at":"2026-05-18T01:53:46.127442Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:46.127442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/VMADX1WROa2p11u/1+Yftygq6bojQL+wzlsWdrLxGa0gRkrRVI6Wj3djtmCtB7soQPiXn6hY5IpX2iZ3uLWDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:46.128094Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.5313","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ede4da5b8a5466e1342a299f2137b4a870ac284433103e521421ec38b056a91","sha256:4283b07f85d4a4404a401394cd37021112e88868254f130e248530031a3d88af"],"state_sha256":"a297c68956b57ab82c164d6f96cfa640830f1bb33e3113a5716778d1d04c6724"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j5GK5Ep79S66GSrOQ+SDVWZWwUrBf5Z3LLO78/paLCYmXDTxK4y581OxWgfnqep0iWev2Vsi8zY+ViPFz+SjAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T08:46:36.475289Z","bundle_sha256":"9a1cddfaece059aa191eac29af7a9710e88902fe25f1ea799222281bc60c3c83"}}