{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:WC7RE22SNQ66ZYYQX57JRYC3IH","short_pith_number":"pith:WC7RE22S","canonical_record":{"source":{"id":"2012.04261","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-12-08T07:57:50Z","cross_cats_sorted":["astro-ph.IM","gr-qc"],"title_canon_sha256":"5fa201d9fc85dcf94e2e4b0745d16b907a6ff35b79543dfbb6883dd63412947e","abstract_canon_sha256":"67e9e8fcd846cd18a6f1454ed1166e4a17612159b46b2a756a393ea1107d34dd"},"schema_version":"1.0"},"canonical_sha256":"b0bf126b526c3dece310bf7e98e05b41d25ad3888a027407da62c005b72157a9","source":{"kind":"arxiv","id":"2012.04261","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.04261","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"arxiv_version","alias_value":"2012.04261v3","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.04261","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"pith_short_12","alias_value":"WC7RE22SNQ66","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"pith_short_16","alias_value":"WC7RE22SNQ66ZYYQ","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"pith_short_8","alias_value":"WC7RE22S","created_at":"2026-07-05T02:13:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:WC7RE22SNQ66ZYYQX57JRYC3IH","target":"record","payload":{"canonical_record":{"source":{"id":"2012.04261","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-12-08T07:57:50Z","cross_cats_sorted":["astro-ph.IM","gr-qc"],"title_canon_sha256":"5fa201d9fc85dcf94e2e4b0745d16b907a6ff35b79543dfbb6883dd63412947e","abstract_canon_sha256":"67e9e8fcd846cd18a6f1454ed1166e4a17612159b46b2a756a393ea1107d34dd"},"schema_version":"1.0"},"canonical_sha256":"b0bf126b526c3dece310bf7e98e05b41d25ad3888a027407da62c005b72157a9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:13:57.100744Z","signature_b64":"qzr9TX2R1qLuOrbFEjvLHQ9aImqHGTK56IuOiHHbvP31YsK9902lZQAXnrJxucqZjLy2UtUupuvhSPxklDPpBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b0bf126b526c3dece310bf7e98e05b41d25ad3888a027407da62c005b72157a9","last_reissued_at":"2026-07-05T02:13:57.099835Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:13:57.099835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.04261","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:13:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P7oB9YE42TDDH/Ph3yeZgkXdrkfoOVSV2VK1YybEBbxYQR0WxmEwc0y6ejd78EBM78m4VwDPbx5BvLRLWSL0AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T22:26:08.969385Z"},"content_sha256":"bca5359c129fe98ecc4625184d5390dd42cc59f1c690625012c2319954de98b1","schema_version":"1.0","event_id":"sha256:bca5359c129fe98ecc4625184d5390dd42cc59f1c690625012c2319954de98b1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:WC7RE22SNQ66ZYYQX57JRYC3IH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extending the frequency reach of pulsar timing array based gravitational wave search without high cadence observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Soumya D. Mohanty, Yan Wang, Zhoujian Cao","submitted_at":"2020-12-08T07:57:50Z","abstract_excerpt":"Gravitational wave (GW) searches using pulsar timing arrays (PTAs) are assumed to be limited by the typical average observational cadence of $1/(2~{\\rm weeks})$ for a single pulsar to GW frequencies $\\lesssim 4\\times 10^{-7}$ Hz. We show that this assumption is incorrect and that a PTA can detect signals with much higher frequencies, which are preserved in the data due to aliasing, by exploiting asynchronous observations from multiple pulsars. This allows an observation strategy that is scalable to future large-scale PTAs containing $O(10^3)$ pulsars, enabled by the Five-hundred meter Aperture"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.04261","kind":"arxiv","version":3},"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/2012.04261/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":"2026-07-05T02:13:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AvUF6nFuFjSJrTKNZLBMF0eh6vznGj+ec4syK8e0/7nUPbV+V+m0k10o/omeZj4JO1dp2r41Cz/E5b1Wj5RrAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T22:26:08.969940Z"},"content_sha256":"82f9f3d2c253cd5af14c33ca845d2ec15dd6b7ca206a1f656bc2b3bbd6ad64ef","schema_version":"1.0","event_id":"sha256:82f9f3d2c253cd5af14c33ca845d2ec15dd6b7ca206a1f656bc2b3bbd6ad64ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WC7RE22SNQ66ZYYQX57JRYC3IH/bundle.json","state_url":"https://pith.science/pith/WC7RE22SNQ66ZYYQX57JRYC3IH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WC7RE22SNQ66ZYYQX57JRYC3IH/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":"2026-08-13T22:26:08Z","links":{"resolver":"https://pith.science/pith/WC7RE22SNQ66ZYYQX57JRYC3IH","bundle":"https://pith.science/pith/WC7RE22SNQ66ZYYQX57JRYC3IH/bundle.json","state":"https://pith.science/pith/WC7RE22SNQ66ZYYQX57JRYC3IH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WC7RE22SNQ66ZYYQX57JRYC3IH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:WC7RE22SNQ66ZYYQX57JRYC3IH","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":"67e9e8fcd846cd18a6f1454ed1166e4a17612159b46b2a756a393ea1107d34dd","cross_cats_sorted":["astro-ph.IM","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-12-08T07:57:50Z","title_canon_sha256":"5fa201d9fc85dcf94e2e4b0745d16b907a6ff35b79543dfbb6883dd63412947e"},"schema_version":"1.0","source":{"id":"2012.04261","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.04261","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"arxiv_version","alias_value":"2012.04261v3","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.04261","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"pith_short_12","alias_value":"WC7RE22SNQ66","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"pith_short_16","alias_value":"WC7RE22SNQ66ZYYQ","created_at":"2026-07-05T02:13:57Z"},{"alias_kind":"pith_short_8","alias_value":"WC7RE22S","created_at":"2026-07-05T02:13:57Z"}],"graph_snapshots":[{"event_id":"sha256:82f9f3d2c253cd5af14c33ca845d2ec15dd6b7ca206a1f656bc2b3bbd6ad64ef","target":"graph","created_at":"2026-07-05T02:13:57Z","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/2012.04261/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational wave (GW) searches using pulsar timing arrays (PTAs) are assumed to be limited by the typical average observational cadence of $1/(2~{\\rm weeks})$ for a single pulsar to GW frequencies $\\lesssim 4\\times 10^{-7}$ Hz. We show that this assumption is incorrect and that a PTA can detect signals with much higher frequencies, which are preserved in the data due to aliasing, by exploiting asynchronous observations from multiple pulsars. This allows an observation strategy that is scalable to future large-scale PTAs containing $O(10^3)$ pulsars, enabled by the Five-hundred meter Aperture","authors_text":"Soumya D. Mohanty, Yan Wang, Zhoujian Cao","cross_cats":["astro-ph.IM","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-12-08T07:57:50Z","title":"Extending the frequency reach of pulsar timing array based gravitational wave search without high cadence observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.04261","kind":"arxiv","version":3},"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:bca5359c129fe98ecc4625184d5390dd42cc59f1c690625012c2319954de98b1","target":"record","created_at":"2026-07-05T02:13:57Z","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":"67e9e8fcd846cd18a6f1454ed1166e4a17612159b46b2a756a393ea1107d34dd","cross_cats_sorted":["astro-ph.IM","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-12-08T07:57:50Z","title_canon_sha256":"5fa201d9fc85dcf94e2e4b0745d16b907a6ff35b79543dfbb6883dd63412947e"},"schema_version":"1.0","source":{"id":"2012.04261","kind":"arxiv","version":3}},"canonical_sha256":"b0bf126b526c3dece310bf7e98e05b41d25ad3888a027407da62c005b72157a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b0bf126b526c3dece310bf7e98e05b41d25ad3888a027407da62c005b72157a9","first_computed_at":"2026-07-05T02:13:57.099835Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:13:57.099835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qzr9TX2R1qLuOrbFEjvLHQ9aImqHGTK56IuOiHHbvP31YsK9902lZQAXnrJxucqZjLy2UtUupuvhSPxklDPpBw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:13:57.100744Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.04261","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bca5359c129fe98ecc4625184d5390dd42cc59f1c690625012c2319954de98b1","sha256:82f9f3d2c253cd5af14c33ca845d2ec15dd6b7ca206a1f656bc2b3bbd6ad64ef"],"state_sha256":"9520c39879d4daa48e314e634bb77987d5bf1f096b73aecb90aae2d3f9c2b47a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iQQpgno7k0jflby+B7ibdOvnvJfcd6+Z5KFKs3foVXboi4dkuzPFeBjMPOvFL1/YokcXkmV8eMm8JsE+FwUsDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T22:26:08.974163Z","bundle_sha256":"18357addaf0f4ec8d6b58b3d40ae325fbee697a204048a52bc52094e38dc47c9"}}