{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BMLJAKOG6LOKSFU4DAFZH6FQHU","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":"ab2dd1886fde826bfeecb88d6d7848c8bdf0e63dd279e8bcfac64902a6e44a39","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-14T21:00:22Z","title_canon_sha256":"0c1a01c29c2f2e1315ab3c07a9087292cd7887d5644fddab92c93a4de2cdc1bf"},"schema_version":"1.0","source":{"id":"1301.3143","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3143","created_at":"2026-05-18T03:17:34Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3143v2","created_at":"2026-05-18T03:17:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3143","created_at":"2026-05-18T03:17:34Z"},{"alias_kind":"pith_short_12","alias_value":"BMLJAKOG6LOK","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BMLJAKOG6LOKSFU4","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BMLJAKOG","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:61792e1602c88556bb9a8f71e1716a3cc0919a16120956b46e5dcef9919f3389","target":"graph","created_at":"2026-05-18T03:17:34Z","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 use high-resolution cosmological hydrodynamic simulations to study the angular momentum acquisition of gaseous halos around Milky Way sized galaxies. We find that cold mode accreted gas enters a galaxy halo with ~70% more specific angular momentum than dark matter averaged over cosmic time (though with a very large dispersion). In fact, we find that all matter has a higher spin parameter when measured at accretion than when averaged over the entire halo lifetime, and is well characterized by \\lambda~0.1, at accretion. Combined with the fact that cold flow gas spends a relatively short time ","authors_text":"2), (2) JPL, (3) UW-Madison, (4) UC Irvine, (5) NYCCT, (6) Univ. Zurich, (7) McMaster), Alyson M. Brooks (3), Ariyeh H. Maller (5), James S. Bullock (4), James Wadsley (7), Juerg Diemand (6), Kyle R. Stewart (1, Leonidas A. Moustakas (2) ((1) CBU","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-14T21:00:22Z","title":"Angular Momentum Acquisition in Galaxy Halos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3143","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:f90e1264f8c766a0c0778642e6a9abf47d2ff0a4e298b1b4fe50698091102885","target":"record","created_at":"2026-05-18T03:17:34Z","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":"ab2dd1886fde826bfeecb88d6d7848c8bdf0e63dd279e8bcfac64902a6e44a39","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-14T21:00:22Z","title_canon_sha256":"0c1a01c29c2f2e1315ab3c07a9087292cd7887d5644fddab92c93a4de2cdc1bf"},"schema_version":"1.0","source":{"id":"1301.3143","kind":"arxiv","version":2}},"canonical_sha256":"0b169029c6f2dca9169c180b93f8b03d0d3dec69ec5f3ad26ffe8f3c98d603e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b169029c6f2dca9169c180b93f8b03d0d3dec69ec5f3ad26ffe8f3c98d603e1","first_computed_at":"2026-05-18T03:17:34.102250Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:34.102250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bGtPC/Go/Xq+XZlqvf7n4s16AwSYw4E+B6obj2sLKJ6eOeXvLQ0uTicMeQySXDL2TA85XdHy+G2SuvwxS0jwBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:34.102908Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.3143","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f90e1264f8c766a0c0778642e6a9abf47d2ff0a4e298b1b4fe50698091102885","sha256:61792e1602c88556bb9a8f71e1716a3cc0919a16120956b46e5dcef9919f3389"],"state_sha256":"a755980ef5ab4db73270ebdb1e6322542172c81eb913277a3ad5adef2bc299f8"}