{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:K7UZEYQXGFQ7ORCJ4RNSXDG342","short_pith_number":"pith:K7UZEYQX","schema_version":"1.0","canonical_sha256":"57e99262173161f74449e45b2b8cdbe681bba21721bfb08b692fed2a22b14d31","source":{"kind":"arxiv","id":"2606.04762","version":1},"attestation_state":"computed","paper":{"title":"Granular mass perturbations on the pulsar - supermassive black hole system","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Lijing Shao, Zexin Hu","submitted_at":"2026-06-03T11:47:09Z","abstract_excerpt":"Discovery and timing observations of a radio pulsar orbiting around Sagittarius A*, the supermassive black hole (SMBH) in our Galactic Centre (GC), will provide unprecedented opportunities of studying the SMBH spacetime, testing gravity theories, and probing the astrophysical environment in the GC. However, unknown mass distributions might cause timing residuals that are much larger than the timing precision. With extensive numerical simulations, for the first time we find that the perturbations caused by a granular cusp of stellar-mass black holes in the GC lead to post-fit timing residuals o"},"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":"2606.04762","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-03T11:47:09Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"46996047073eaaf727adb2b99770fe7a4b2944fe91f3303ce0494bdcc8f3f8fb","abstract_canon_sha256":"d6bda3294385f03d94b341b679330bb934e02ad45dc3863c2e7e2941fdf01189"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T01:09:28.992961Z","signature_b64":"6ELI7sM9NrrQTbd4k3NQeFAk2ivM7Yecf0CMmrmxRbglCI1YEcjHzsNYiSW39Kon0I8HfenV8mbkq8s909KZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57e99262173161f74449e45b2b8cdbe681bba21721bfb08b692fed2a22b14d31","last_reissued_at":"2026-06-04T01:09:28.992373Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T01:09:28.992373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Granular mass perturbations on the pulsar - supermassive black hole system","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Lijing Shao, Zexin Hu","submitted_at":"2026-06-03T11:47:09Z","abstract_excerpt":"Discovery and timing observations of a radio pulsar orbiting around Sagittarius A*, the supermassive black hole (SMBH) in our Galactic Centre (GC), will provide unprecedented opportunities of studying the SMBH spacetime, testing gravity theories, and probing the astrophysical environment in the GC. However, unknown mass distributions might cause timing residuals that are much larger than the timing precision. With extensive numerical simulations, for the first time we find that the perturbations caused by a granular cusp of stellar-mass black holes in the GC lead to post-fit timing residuals o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04762","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/2606.04762/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":"2606.04762","created_at":"2026-06-04T01:09:28.992483+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.04762v1","created_at":"2026-06-04T01:09:28.992483+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04762","created_at":"2026-06-04T01:09:28.992483+00:00"},{"alias_kind":"pith_short_12","alias_value":"K7UZEYQXGFQ7","created_at":"2026-06-04T01:09:28.992483+00:00"},{"alias_kind":"pith_short_16","alias_value":"K7UZEYQXGFQ7ORCJ","created_at":"2026-06-04T01:09:28.992483+00:00"},{"alias_kind":"pith_short_8","alias_value":"K7UZEYQX","created_at":"2026-06-04T01:09:28.992483+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/K7UZEYQXGFQ7ORCJ4RNSXDG342","json":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342.json","graph_json":"https://pith.science/api/pith-number/K7UZEYQXGFQ7ORCJ4RNSXDG342/graph.json","events_json":"https://pith.science/api/pith-number/K7UZEYQXGFQ7ORCJ4RNSXDG342/events.json","paper":"https://pith.science/paper/K7UZEYQX"},"agent_actions":{"view_html":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342","download_json":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342.json","view_paper":"https://pith.science/paper/K7UZEYQX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.04762&json=true","fetch_graph":"https://pith.science/api/pith-number/K7UZEYQXGFQ7ORCJ4RNSXDG342/graph.json","fetch_events":"https://pith.science/api/pith-number/K7UZEYQXGFQ7ORCJ4RNSXDG342/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342/action/timestamp_anchor","attest_storage":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342/action/storage_attestation","attest_author":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342/action/author_attestation","sign_citation":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342/action/citation_signature","submit_replication":"https://pith.science/pith/K7UZEYQXGFQ7ORCJ4RNSXDG342/action/replication_record"}},"created_at":"2026-06-04T01:09:28.992483+00:00","updated_at":"2026-06-04T01:09:28.992483+00:00"}