{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2VLW6G2MQHS7AMEHZVZDVJALYI","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":"b1e1560b9a177b5655a2ece00c1317a5f4e4b5a58034da7571119cb0d8915ff3","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-11-18T21:00:07Z","title_canon_sha256":"e7be73b6db17ffbf9ef566044005e4effd64095cebe6821580b1f2f6a4d67ebf"},"schema_version":"1.0","source":{"id":"1411.5030","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.5030","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"arxiv_version","alias_value":"1411.5030v3","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.5030","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"pith_short_12","alias_value":"2VLW6G2MQHS7","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2VLW6G2MQHS7AMEH","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2VLW6G2M","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:fe534c3243dbe00769f0a9296bbd5a713c0a3419fe58de2a3fd2202e2ce59200","target":"graph","created_at":"2026-05-18T01:30:49Z","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":"Galaxy mergers lead to the formation of massive black hole binaries which can accelerate background stars close to the speed of light. We estimate the comoving density of ejected stars with a peculiar velocity in excess of $0.1c$ or $0.5c$ to be $\\sim 10^{10}$ and $10^5$ Gpc$^{-3}$ respectively, in the present-day Universe. Semi-relativistic giant stars will be detectable with forthcoming telescopes out to a distance of a few Mpc, where their proper motion, radial velocity, and age, can be spectroscopically measured. In difference from traditional cosmological messengers, such as photons, neut","authors_text":"Abraham Loeb (1), James Guillochon (1) ((1) Harvard ITC)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-11-18T21:00:07Z","title":"Observational Cosmology With Semi-Relativistic Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.5030","kind":"arxiv","version":3},"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":"sha256:28b81b83386ba928051a5ea37d129f578fc163469e00ee8a9c57b277ec6ea364","target":"record","created_at":"2026-05-18T01:30:49Z","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":"b1e1560b9a177b5655a2ece00c1317a5f4e4b5a58034da7571119cb0d8915ff3","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-11-18T21:00:07Z","title_canon_sha256":"e7be73b6db17ffbf9ef566044005e4effd64095cebe6821580b1f2f6a4d67ebf"},"schema_version":"1.0","source":{"id":"1411.5030","kind":"arxiv","version":3}},"canonical_sha256":"d5576f1b4c81e5f03087cd723aa40bc20d0be410db162a06657977526b6d6347","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5576f1b4c81e5f03087cd723aa40bc20d0be410db162a06657977526b6d6347","first_computed_at":"2026-05-18T01:30:49.144168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:49.144168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sa3m7xHalXx46pmp/54dmV/Oi8WohRQkDuZYWo2ZokTEMfWl/y2tgyMxRemuZtxTGQtq8Y8GmLqiBt5HymfVAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:49.144760Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.5030","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28b81b83386ba928051a5ea37d129f578fc163469e00ee8a9c57b277ec6ea364","sha256:fe534c3243dbe00769f0a9296bbd5a713c0a3419fe58de2a3fd2202e2ce59200"],"state_sha256":"39d2999173e880fc64101521145a92cf4fe46496fba4a14d9d76fc96a04c2ca2"}