{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ILGBLLOPD3V5KELSDE7BAUPZBK","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":"5c309c1ff7bb77fdc7ef0a9044727849466d44622b932b79d65160f61cba0e5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T19:44:13Z","title_canon_sha256":"08a7cd3d1c06bf64815813fea28ad0b0b26b5509ada777867a4d36326aa65815"},"schema_version":"1.0","source":{"id":"1510.06018","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06018","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06018v3","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06018","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"ILGBLLOPD3V5","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"ILGBLLOPD3V5KELS","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"ILGBLLOP","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:31f9c948b396ce613888435dc8b424033f95917e1e73d6c7d8470052d42bd9ad","target":"graph","created_at":"2026-05-18T01:01:29Z","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 characterize the physical properties of the cool T ~10^4 K circumgalactic medium surrounding z ~2-3 quasar host galaxies, which are predicted to evolve into present day massive ellipticals. Using a statistical sample of 14 quasar pairs with projected separation < 300 kpc and high dispersion, high S/N spectra, we find extreme kinematics with low metal ion lines typically spanning ~ 500 km/s, exceeding any previously studied galactic population. The CGM is significantly enriched, even beyond the virial radius, with a median metallicity [M/H] ~ -0.6. The alpha/Fe abundance ratio is enhanced, s","authors_text":"(2) Max Planck Institute for Astronomy), Joseph F. Hennawi (2) ((1) UCO/Lick Observatory, J. Xavier Prochaska (1), Marie Wingyee Lau (1), UC Santa Cruz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T19:44:13Z","title":"Quasars Probing Quasars VIII. The Physical Properties of the Cool Circumgalactic Medium Surrounding z ~ 2-3 Massive Galaxies Hosting Quasars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06018","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:dd23074abd11e43ebd6f6435fa35ce6de9e087c8d8598758771985b2df049fef","target":"record","created_at":"2026-05-18T01:01:29Z","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":"5c309c1ff7bb77fdc7ef0a9044727849466d44622b932b79d65160f61cba0e5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-10-20T19:44:13Z","title_canon_sha256":"08a7cd3d1c06bf64815813fea28ad0b0b26b5509ada777867a4d36326aa65815"},"schema_version":"1.0","source":{"id":"1510.06018","kind":"arxiv","version":3}},"canonical_sha256":"42cc15adcf1eebd51172193e1051f90aa02ec5451af23589a078daa333a8da2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42cc15adcf1eebd51172193e1051f90aa02ec5451af23589a078daa333a8da2b","first_computed_at":"2026-05-18T01:01:29.010926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:29.010926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M1fU5bKRSipPaCAYYIkMOJGzle3XoDnOnLGWvd8bx5rwj/d8d2QvrmlFwrJEFbH2KD8M4uSPsBAKfFlP4qggDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:29.011417Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.06018","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd23074abd11e43ebd6f6435fa35ce6de9e087c8d8598758771985b2df049fef","sha256:31f9c948b396ce613888435dc8b424033f95917e1e73d6c7d8470052d42bd9ad"],"state_sha256":"8b95b4ac7930b94bdfdfd246decbc4d0492863b7daab925a7757bb1b16da850c"}