{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:T7HKVHOD4DX5VVZH2NWSII4NTI","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":"a2a5d7cabbe7888982b5f44e0e8634efd24c2c806703c13773c504d1875dc759","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-01-05T19:00:38Z","title_canon_sha256":"8874722c08cf7e444371a05b073fe2ceb12f95aea53dcd26410ab95ff2e3dea0"},"schema_version":"1.0","source":{"id":"1801.01889","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.01889","created_at":"2026-05-18T00:25:15Z"},{"alias_kind":"arxiv_version","alias_value":"1801.01889v1","created_at":"2026-05-18T00:25:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.01889","created_at":"2026-05-18T00:25:15Z"},{"alias_kind":"pith_short_12","alias_value":"T7HKVHOD4DX5","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"T7HKVHOD4DX5VVZH","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"T7HKVHOD","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:df2ec0805a94cb63f84cf17e122fa8d32410ad0171da5b87a6b869e3719d8fc0","target":"graph","created_at":"2026-05-18T00:25:15Z","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":"We present the discovery and interpretation of ionized nebulae around two ultraluminous X-ray sources in M 51; both sources share the rare property of showing X-ray eclipses by their companion stars, and are therefore prime targets for follow-up studies. Using archival Hubble Space Telescope images, we found an elongated, 100-pc-long emission-line structure associated with one X-ray source (CXOM51 J132940.0+471237; ULX-1 for simplicity), and a more circular, ionized nebula at the location of the second source (CXOM51 J132939.5+471244; ULX-2 for simplicity). We observed both nebulae with the La","authors_text":"A. Schwope, C. Motch, G. E. Anderson, H. M. Johnston, J. C. A. Miller-Jones, M.W. Pakull, R. Soria, R. Urquhart","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-01-05T19:00:38Z","title":"Multiband counterparts of two eclipsing ultraluminous X-ray sources in M 51"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01889","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:c670b3a34cc7f4f81cbfd1bc57e7c5b36579656a48de9382ef7eff0681590d35","target":"record","created_at":"2026-05-18T00:25:15Z","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":"a2a5d7cabbe7888982b5f44e0e8634efd24c2c806703c13773c504d1875dc759","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-01-05T19:00:38Z","title_canon_sha256":"8874722c08cf7e444371a05b073fe2ceb12f95aea53dcd26410ab95ff2e3dea0"},"schema_version":"1.0","source":{"id":"1801.01889","kind":"arxiv","version":1}},"canonical_sha256":"9fceaa9dc3e0efdad727d36d24238d9a105d4f00981af13951164fbfb8ed6a1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fceaa9dc3e0efdad727d36d24238d9a105d4f00981af13951164fbfb8ed6a1f","first_computed_at":"2026-05-18T00:25:15.364108Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:15.364108Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FdmNw8NVRV/FdYlTNVZeW97P9aGNruro3wx8xHRJNGOwUJ9+8dwrfUjgTASRx4ixmnqbuoazbxzqnX1kVVsoBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:15.364721Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.01889","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c670b3a34cc7f4f81cbfd1bc57e7c5b36579656a48de9382ef7eff0681590d35","sha256:df2ec0805a94cb63f84cf17e122fa8d32410ad0171da5b87a6b869e3719d8fc0"],"state_sha256":"031512f0feff78fc2b3c0462f16414d78b2885c5e4797fabbf1e19b7126b029c"}