{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5TRYS6P6DLEZTCRVSZOJIKZBAU","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":"23029cd92b30a5acd63b951757cf72b8297b662b4e81d937520d381848418aca","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-23T20:00:05Z","title_canon_sha256":"fb756dfbe6fc9b997f3f80af558412b88f357f77536cd3f875713a04f47f446f"},"schema_version":"1.0","source":{"id":"1307.6217","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.6217","created_at":"2026-05-18T01:48:40Z"},{"alias_kind":"arxiv_version","alias_value":"1307.6217v1","created_at":"2026-05-18T01:48:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.6217","created_at":"2026-05-18T01:48:40Z"},{"alias_kind":"pith_short_12","alias_value":"5TRYS6P6DLEZ","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5TRYS6P6DLEZTCRV","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5TRYS6P6","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:6d6a7898cbf77c317a2d88012e6408850cc8d742b4d6a2b074788ad5f75b0c57","target":"graph","created_at":"2026-05-18T01:48:40Z","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 report a sensitive X-ray search for the proposed intermediate mass black hole (IMBH) in the massive Galactic cluster, Omega Centauri (NGC 5139). Combining Chandra X-ray Observatory data from Cycles 1 and 13, we obtain a deep (~291 ks) exposure of the central regions of the cluster. We find no evidence for an X-ray point source near any of the cluster's proposed dynamical centers, and place an upper limit on the X-ray flux from a central source of f_X(0.5-7.0 keV) <= 5.0x10^-16 erg cm^-2 s^-1, after correcting for absorption. This corresponds to an unabsorbed X-ray luminosity of L_X(0.5-7.0 ","authors_text":"Adrienne M. Cool, Craig O. Heinke, Daryl Haggard, Haldan N. Cohn, Jay Anderson, Phyllis M. Lugger, Roeland van der Marel","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-23T20:00:05Z","title":"A Deep Chandra X-ray Limit on the Putative IMBH in Omega Centauri"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.6217","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":"sha256:651e7b01c69d236c70f838af2c554052be5092ae03b268b82b4ceed241686010","target":"record","created_at":"2026-05-18T01:48:40Z","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":"23029cd92b30a5acd63b951757cf72b8297b662b4e81d937520d381848418aca","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-23T20:00:05Z","title_canon_sha256":"fb756dfbe6fc9b997f3f80af558412b88f357f77536cd3f875713a04f47f446f"},"schema_version":"1.0","source":{"id":"1307.6217","kind":"arxiv","version":1}},"canonical_sha256":"ece38979fe1ac9998a35965c942b210517972a853de9bd98168dda450421f8ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ece38979fe1ac9998a35965c942b210517972a853de9bd98168dda450421f8ed","first_computed_at":"2026-05-18T01:48:40.964261Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:40.964261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ObBYkxMqhFES0kcSaoIy+mEskI3ljxL/jNo59M5hCiYLmQ4NEvc5n+a2T4OAPceVTk9wtCgajQGiFHf5Cz3UDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:40.964883Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.6217","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:651e7b01c69d236c70f838af2c554052be5092ae03b268b82b4ceed241686010","sha256:6d6a7898cbf77c317a2d88012e6408850cc8d742b4d6a2b074788ad5f75b0c57"],"state_sha256":"bc06151c700fb0ab14f090757bec4ab9db445e061d5a11f174c7d3e501f22ec0"}