{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EUIT6XSNTHEFLYVU3RGLJLLN7U","short_pith_number":"pith:EUIT6XSN","canonical_record":{"source":{"id":"1709.01598","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T21:13:21Z","cross_cats_sorted":[],"title_canon_sha256":"68811af115a00d43ad7bfa9e601844aa612e203141eddbd4c76a2eddac90585a","abstract_canon_sha256":"52a58f02654d2e4cd20d38bce2171ae32221dd66fd66fbde3b2b3a29338e9e93"},"schema_version":"1.0"},"canonical_sha256":"25113f5e4d99c855e2b4dc4cb4ad6dfd29546ef9565d69e4b495e2bc81c68c80","source":{"kind":"arxiv","id":"1709.01598","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01598","created_at":"2026-05-18T00:08:15Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01598v2","created_at":"2026-05-18T00:08:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01598","created_at":"2026-05-18T00:08:15Z"},{"alias_kind":"pith_short_12","alias_value":"EUIT6XSNTHEF","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EUIT6XSNTHEFLYVU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EUIT6XSN","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EUIT6XSNTHEFLYVU3RGLJLLN7U","target":"record","payload":{"canonical_record":{"source":{"id":"1709.01598","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T21:13:21Z","cross_cats_sorted":[],"title_canon_sha256":"68811af115a00d43ad7bfa9e601844aa612e203141eddbd4c76a2eddac90585a","abstract_canon_sha256":"52a58f02654d2e4cd20d38bce2171ae32221dd66fd66fbde3b2b3a29338e9e93"},"schema_version":"1.0"},"canonical_sha256":"25113f5e4d99c855e2b4dc4cb4ad6dfd29546ef9565d69e4b495e2bc81c68c80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:15.965067Z","signature_b64":"SfJKVIINIHlIi8bAapHvHASkGlaOqVmDBGedj0k5oe0A6ta/aDMOOdgIrCa721YBy+nrS36S4VA9HJGqmkd0Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25113f5e4d99c855e2b4dc4cb4ad6dfd29546ef9565d69e4b495e2bc81c68c80","last_reissued_at":"2026-05-18T00:08:15.964487Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:15.964487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.01598","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":"2026-05-18T00:08:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TmAhgqcSP0ezZ9/NMVbXYaIDcyExjEuitZ/bzWHldF8V+BQLZxvu0+iPCCGFmPNH5y2WdDfBLwPuISippkeNBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T07:49:20.304670Z"},"content_sha256":"2bc37f77ab8c9c86a7e8acf449b9e3fed949d5210f59898238719140b8eb3a13","schema_version":"1.0","event_id":"sha256:2bc37f77ab8c9c86a7e8acf449b9e3fed949d5210f59898238719140b8eb3a13"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EUIT6XSNTHEFLYVU3RGLJLLN7U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radial Velocity Measurements of an Orbiting Star Around Sgr A*","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Francisco Najarro, Haruka Gorin, Hiromi Saida, Masaaki Takahashi, Masashi Omiya, Mizuki Takahashi, Motohide Tamura, Rainer Schoedel, Satoshi Hamano, Schun Nagatomo, Shogo Nishiyama, Tetsuya Nagata, Yohsuke Takamori","submitted_at":"2017-09-05T21:13:21Z","abstract_excerpt":"During the next closest approach of the orbiting star S2/S0-2 to the Galactic supermassive black hole (SMBH), it is estimated that RV uncertainties of ~ 10 km/s allow us to detect post-Newtonian effects throughout 2018. To evaluate an achievable uncertainty in RV and its stability, we have carried out near-infrared, high resolution (R ~ 20,000) spectroscopic monitoring observations of S2 using the Subaru telescope and the near-infrared spectrograph IRCS from 2014 to 2016. The Br-gamma absorption lines are used to determine the RVs of S2. The RVs we obtained are 497 km/s, 877 km/s, and 1108 km/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01598","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":""},"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":"2026-05-18T00:08:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FAZDaSVn961IynOrJMXag5APHrAlCx62uspV06bZINwsyq3K4b7VqN4vBKnIFWNKgkBjSmAlx4UxFW1aMJvfBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T07:49:20.305298Z"},"content_sha256":"537b7694e138c791f2bbd83ed9ce44956ccb601c89c054a48153c5e3cb0f566b","schema_version":"1.0","event_id":"sha256:537b7694e138c791f2bbd83ed9ce44956ccb601c89c054a48153c5e3cb0f566b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U/bundle.json","state_url":"https://pith.science/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U/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":"2026-05-21T07:49:20Z","links":{"resolver":"https://pith.science/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U","bundle":"https://pith.science/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U/bundle.json","state":"https://pith.science/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EUIT6XSNTHEFLYVU3RGLJLLN7U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EUIT6XSNTHEFLYVU3RGLJLLN7U","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":"52a58f02654d2e4cd20d38bce2171ae32221dd66fd66fbde3b2b3a29338e9e93","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T21:13:21Z","title_canon_sha256":"68811af115a00d43ad7bfa9e601844aa612e203141eddbd4c76a2eddac90585a"},"schema_version":"1.0","source":{"id":"1709.01598","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01598","created_at":"2026-05-18T00:08:15Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01598v2","created_at":"2026-05-18T00:08:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01598","created_at":"2026-05-18T00:08:15Z"},{"alias_kind":"pith_short_12","alias_value":"EUIT6XSNTHEF","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EUIT6XSNTHEFLYVU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EUIT6XSN","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:537b7694e138c791f2bbd83ed9ce44956ccb601c89c054a48153c5e3cb0f566b","target":"graph","created_at":"2026-05-18T00:08:15Z","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":"During the next closest approach of the orbiting star S2/S0-2 to the Galactic supermassive black hole (SMBH), it is estimated that RV uncertainties of ~ 10 km/s allow us to detect post-Newtonian effects throughout 2018. To evaluate an achievable uncertainty in RV and its stability, we have carried out near-infrared, high resolution (R ~ 20,000) spectroscopic monitoring observations of S2 using the Subaru telescope and the near-infrared spectrograph IRCS from 2014 to 2016. The Br-gamma absorption lines are used to determine the RVs of S2. The RVs we obtained are 497 km/s, 877 km/s, and 1108 km/","authors_text":"Francisco Najarro, Haruka Gorin, Hiromi Saida, Masaaki Takahashi, Masashi Omiya, Mizuki Takahashi, Motohide Tamura, Rainer Schoedel, Satoshi Hamano, Schun Nagatomo, Shogo Nishiyama, Tetsuya Nagata, Yohsuke Takamori","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T21:13:21Z","title":"Radial Velocity Measurements of an Orbiting Star Around Sgr A*"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01598","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":"sha256:2bc37f77ab8c9c86a7e8acf449b9e3fed949d5210f59898238719140b8eb3a13","target":"record","created_at":"2026-05-18T00:08:15Z","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":"52a58f02654d2e4cd20d38bce2171ae32221dd66fd66fbde3b2b3a29338e9e93","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T21:13:21Z","title_canon_sha256":"68811af115a00d43ad7bfa9e601844aa612e203141eddbd4c76a2eddac90585a"},"schema_version":"1.0","source":{"id":"1709.01598","kind":"arxiv","version":2}},"canonical_sha256":"25113f5e4d99c855e2b4dc4cb4ad6dfd29546ef9565d69e4b495e2bc81c68c80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25113f5e4d99c855e2b4dc4cb4ad6dfd29546ef9565d69e4b495e2bc81c68c80","first_computed_at":"2026-05-18T00:08:15.964487Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:15.964487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SfJKVIINIHlIi8bAapHvHASkGlaOqVmDBGedj0k5oe0A6ta/aDMOOdgIrCa721YBy+nrS36S4VA9HJGqmkd0Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:15.965067Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.01598","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2bc37f77ab8c9c86a7e8acf449b9e3fed949d5210f59898238719140b8eb3a13","sha256:537b7694e138c791f2bbd83ed9ce44956ccb601c89c054a48153c5e3cb0f566b"],"state_sha256":"8849b2bd5b70b94f25e69cc27b63ce4c5f5035d1a93da073c86833f7b2e0343a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A18OqFqNA9mp/9CZILwGRo0caVAQRCKjFvZP9ZJn/gFDs7XzGqGv92JKfBUChb6VXlMXyLtFNwXSvIrDe8WGDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T07:49:20.308435Z","bundle_sha256":"16162cc6a940f36ae76a980d49d60d86a2bfb0c64a8d11105bf0ea8ccc741459"}}