{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:ODEGRCZTEWWXNJDYC3T2FGPARM","short_pith_number":"pith:ODEGRCZT","canonical_record":{"source":{"id":"0809.1866","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-10T20:05:31Z","cross_cats_sorted":[],"title_canon_sha256":"b78a8eb17f5ff9677d5bd1791d012dc8a0024cd98e826ff71206ba01cec7fd5e","abstract_canon_sha256":"fd415095e8e96a3388c8d6464a00ea9edc2fd55262f62e0420721c250b7c0dfe"},"schema_version":"1.0"},"canonical_sha256":"70c8688b3325ad76a47816e7a299e08b065211ea87f7a7eac0257c6a9c69cac3","source":{"kind":"arxiv","id":"0809.1866","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.1866","created_at":"2026-05-18T04:29:32Z"},{"alias_kind":"arxiv_version","alias_value":"0809.1866v1","created_at":"2026-05-18T04:29:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.1866","created_at":"2026-05-18T04:29:32Z"},{"alias_kind":"pith_short_12","alias_value":"ODEGRCZTEWWX","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"ODEGRCZTEWWXNJDY","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"ODEGRCZT","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:ODEGRCZTEWWXNJDYC3T2FGPARM","target":"record","payload":{"canonical_record":{"source":{"id":"0809.1866","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-10T20:05:31Z","cross_cats_sorted":[],"title_canon_sha256":"b78a8eb17f5ff9677d5bd1791d012dc8a0024cd98e826ff71206ba01cec7fd5e","abstract_canon_sha256":"fd415095e8e96a3388c8d6464a00ea9edc2fd55262f62e0420721c250b7c0dfe"},"schema_version":"1.0"},"canonical_sha256":"70c8688b3325ad76a47816e7a299e08b065211ea87f7a7eac0257c6a9c69cac3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:32.776212Z","signature_b64":"82PSm+s1E4EKz28Dp+XgpWRAiq5Ybdy5kvWLDQtQsMv5BXv6x3nz6DI+TyiCMyJp2O5yTNBtx7gBYg9rYQFpCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70c8688b3325ad76a47816e7a299e08b065211ea87f7a7eac0257c6a9c69cac3","last_reissued_at":"2026-05-18T04:29:32.775562Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:32.775562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0809.1866","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":"2026-05-18T04:29:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rs8AWSM3dYUYeGFEGA8mQw3WmnQZXoIPyAC/V4zv6meBmHZy0k8PGu8JXRDc0YcaK2XyNY4aCtRT1NwPY58gCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:34:17.490574Z"},"content_sha256":"531c638bbc292af3fb776d4b02487533db9f93e0fa43ae15b2808d46a7f2484b","schema_version":"1.0","event_id":"sha256:531c638bbc292af3fb776d4b02487533db9f93e0fa43ae15b2808d46a7f2484b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:ODEGRCZTEWWXNJDYC3T2FGPARM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frame-dragging and the kinematics of Galactic-Center stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Prasenjit Saha, Rahul Kannan","submitted_at":"2008-09-10T20:05:31Z","abstract_excerpt":"We calculate the effects of frame dragging on the Galactic-Center stars. Assuming the stars are only slightly relativistic, we derive an approximation to the Kerr metric, which turns out to be a weak field Schwarzschild metric plus a frame dragging term. By numerically integrating the resulting geodesic equations, we compute the effect on keplerian elements and the kinematics. We find that the kinematic effect at pericenter passage is proportional to (a(1-e^2))^{-2}. For known Galactic-center stars it is of order 10 m/s. If observed this would provide a measurement of the spin of the black hol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.1866","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":"2026-05-18T04:29:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0fQCDyLCBK/fhTsJNvqhyuySC2Jv45ktjnjR172IpDaJcngpujE+ON0UmxQLkZeCtFow/XF1QgJNfEK+JWnZDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:34:17.491154Z"},"content_sha256":"fa433c39b4b74a0f58ead793af59019210ba28634eba3a92d1f768ca406a4b5c","schema_version":"1.0","event_id":"sha256:fa433c39b4b74a0f58ead793af59019210ba28634eba3a92d1f768ca406a4b5c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODEGRCZTEWWXNJDYC3T2FGPARM/bundle.json","state_url":"https://pith.science/pith/ODEGRCZTEWWXNJDYC3T2FGPARM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODEGRCZTEWWXNJDYC3T2FGPARM/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":"2026-06-01T14:34:17Z","links":{"resolver":"https://pith.science/pith/ODEGRCZTEWWXNJDYC3T2FGPARM","bundle":"https://pith.science/pith/ODEGRCZTEWWXNJDYC3T2FGPARM/bundle.json","state":"https://pith.science/pith/ODEGRCZTEWWXNJDYC3T2FGPARM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODEGRCZTEWWXNJDYC3T2FGPARM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:ODEGRCZTEWWXNJDYC3T2FGPARM","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":"fd415095e8e96a3388c8d6464a00ea9edc2fd55262f62e0420721c250b7c0dfe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-10T20:05:31Z","title_canon_sha256":"b78a8eb17f5ff9677d5bd1791d012dc8a0024cd98e826ff71206ba01cec7fd5e"},"schema_version":"1.0","source":{"id":"0809.1866","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.1866","created_at":"2026-05-18T04:29:32Z"},{"alias_kind":"arxiv_version","alias_value":"0809.1866v1","created_at":"2026-05-18T04:29:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.1866","created_at":"2026-05-18T04:29:32Z"},{"alias_kind":"pith_short_12","alias_value":"ODEGRCZTEWWX","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"ODEGRCZTEWWXNJDY","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"ODEGRCZT","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:fa433c39b4b74a0f58ead793af59019210ba28634eba3a92d1f768ca406a4b5c","target":"graph","created_at":"2026-05-18T04:29:32Z","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":"We calculate the effects of frame dragging on the Galactic-Center stars. Assuming the stars are only slightly relativistic, we derive an approximation to the Kerr metric, which turns out to be a weak field Schwarzschild metric plus a frame dragging term. By numerically integrating the resulting geodesic equations, we compute the effect on keplerian elements and the kinematics. We find that the kinematic effect at pericenter passage is proportional to (a(1-e^2))^{-2}. For known Galactic-center stars it is of order 10 m/s. If observed this would provide a measurement of the spin of the black hol","authors_text":"Prasenjit Saha, Rahul Kannan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-10T20:05:31Z","title":"Frame-dragging and the kinematics of Galactic-Center stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.1866","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":"sha256:531c638bbc292af3fb776d4b02487533db9f93e0fa43ae15b2808d46a7f2484b","target":"record","created_at":"2026-05-18T04:29:32Z","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":"fd415095e8e96a3388c8d6464a00ea9edc2fd55262f62e0420721c250b7c0dfe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-10T20:05:31Z","title_canon_sha256":"b78a8eb17f5ff9677d5bd1791d012dc8a0024cd98e826ff71206ba01cec7fd5e"},"schema_version":"1.0","source":{"id":"0809.1866","kind":"arxiv","version":1}},"canonical_sha256":"70c8688b3325ad76a47816e7a299e08b065211ea87f7a7eac0257c6a9c69cac3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70c8688b3325ad76a47816e7a299e08b065211ea87f7a7eac0257c6a9c69cac3","first_computed_at":"2026-05-18T04:29:32.775562Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:32.775562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"82PSm+s1E4EKz28Dp+XgpWRAiq5Ybdy5kvWLDQtQsMv5BXv6x3nz6DI+TyiCMyJp2O5yTNBtx7gBYg9rYQFpCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:32.776212Z","signed_message":"canonical_sha256_bytes"},"source_id":"0809.1866","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:531c638bbc292af3fb776d4b02487533db9f93e0fa43ae15b2808d46a7f2484b","sha256:fa433c39b4b74a0f58ead793af59019210ba28634eba3a92d1f768ca406a4b5c"],"state_sha256":"f5d6b82e38f6ac7aaf38c3c8722d02a5f41de69f6b62dde0901c238dc4d36a08"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bTpq5mnbo+py0QQcGq3rSSw7elLFce1ovT8cIp4nRCu/QWaZlgo00Lqt1cOwwYBBiA0IOFBnxtFFgCJVfihoDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T14:34:17.493496Z","bundle_sha256":"da221f202a4cc20834867c01b9a870fcdb1f456db103d5c0040144924529001d"}}