{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:33O7XLEOOMZHAKDMB2SKGPQOI4","short_pith_number":"pith:33O7XLEO","canonical_record":{"source":{"id":"1810.13074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-31T02:19:27Z","cross_cats_sorted":[],"title_canon_sha256":"147c0b318d20c2ffc9669ff0b533da01510951c072702e347afd8225e72fb004","abstract_canon_sha256":"c4e7ed1a1198e22e94daa3660ee11306cc3c09c34186272d19e5e07e7be8430c"},"schema_version":"1.0"},"canonical_sha256":"deddfbac8e733270286c0ea4a33e0e47287577cfd38487bf7b423675c6bb0ee2","source":{"kind":"arxiv","id":"1810.13074","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.13074","created_at":"2026-05-18T00:01:52Z"},{"alias_kind":"arxiv_version","alias_value":"1810.13074v1","created_at":"2026-05-18T00:01:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.13074","created_at":"2026-05-18T00:01:52Z"},{"alias_kind":"pith_short_12","alias_value":"33O7XLEOOMZH","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"33O7XLEOOMZHAKDM","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"33O7XLEO","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:33O7XLEOOMZHAKDMB2SKGPQOI4","target":"record","payload":{"canonical_record":{"source":{"id":"1810.13074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-31T02:19:27Z","cross_cats_sorted":[],"title_canon_sha256":"147c0b318d20c2ffc9669ff0b533da01510951c072702e347afd8225e72fb004","abstract_canon_sha256":"c4e7ed1a1198e22e94daa3660ee11306cc3c09c34186272d19e5e07e7be8430c"},"schema_version":"1.0"},"canonical_sha256":"deddfbac8e733270286c0ea4a33e0e47287577cfd38487bf7b423675c6bb0ee2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:52.341392Z","signature_b64":"5Fuy79Yj3bVfqAiNAesaR9THhHdkkV3ktGLSOk5K4McA281kfsP3jpgjCvr8B2ZrBPCjgEmiDZUJ4W/lY2xuAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"deddfbac8e733270286c0ea4a33e0e47287577cfd38487bf7b423675c6bb0ee2","last_reissued_at":"2026-05-18T00:01:52.340972Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:52.340972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.13074","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v3fJIY3OfwJGvonBDOAFbjCdE2L5lanqk6iBZBB2e7P3E2p77P4VB8qF9Zmk05h+cWNI0qFgzP84nv5Ak7W4Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T11:43:41.883186Z"},"content_sha256":"4a824c74aae917654671abf542ba1fb88d77f0fff7162c0f49ec2c80cb88cc25","schema_version":"1.0","event_id":"sha256:4a824c74aae917654671abf542ba1fb88d77f0fff7162c0f49ec2c80cb88cc25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:33O7XLEOOMZHAKDMB2SKGPQOI4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Angular momentum evolution of galaxies: the perspective of hydrodynamical simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) ASTRO 3D, (3) DAWN), Claudia del P. Lagos ((1) ICRAR/UWA","submitted_at":"2018-10-31T02:19:27Z","abstract_excerpt":"Until a decade ago, galaxy formation simulations were unable to simultaneously reproduce the observed angular momentum (AM) of galaxy disks and bulges. Improvements in the interstellar medium and stellar feedback modelling, together with advances in computational capabilities, have allowed the current generation of cosmological galaxy formation simulations to reproduce the diversity of AM and morphology that is observed in local galaxies. In this review I discuss where we currently stand in this area from the perspective of hydrodynamical simulations, specifically how galaxies gain their AM, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.13074","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0UtErBVhSlEgX+ch/94gMUVlAfc6ObzXv4Wo5YuJnQbUDOIxup/IZMLAdsFB5Df758RCuFIunSdAZwfjUCJUAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T11:43:41.883533Z"},"content_sha256":"811e3f832e895750c572cd7e47b93514287666f6a525ecb447d3917572297144","schema_version":"1.0","event_id":"sha256:811e3f832e895750c572cd7e47b93514287666f6a525ecb447d3917572297144"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/33O7XLEOOMZHAKDMB2SKGPQOI4/bundle.json","state_url":"https://pith.science/pith/33O7XLEOOMZHAKDMB2SKGPQOI4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/33O7XLEOOMZHAKDMB2SKGPQOI4/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-04T11:43:41Z","links":{"resolver":"https://pith.science/pith/33O7XLEOOMZHAKDMB2SKGPQOI4","bundle":"https://pith.science/pith/33O7XLEOOMZHAKDMB2SKGPQOI4/bundle.json","state":"https://pith.science/pith/33O7XLEOOMZHAKDMB2SKGPQOI4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/33O7XLEOOMZHAKDMB2SKGPQOI4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:33O7XLEOOMZHAKDMB2SKGPQOI4","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":"c4e7ed1a1198e22e94daa3660ee11306cc3c09c34186272d19e5e07e7be8430c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-31T02:19:27Z","title_canon_sha256":"147c0b318d20c2ffc9669ff0b533da01510951c072702e347afd8225e72fb004"},"schema_version":"1.0","source":{"id":"1810.13074","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.13074","created_at":"2026-05-18T00:01:52Z"},{"alias_kind":"arxiv_version","alias_value":"1810.13074v1","created_at":"2026-05-18T00:01:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.13074","created_at":"2026-05-18T00:01:52Z"},{"alias_kind":"pith_short_12","alias_value":"33O7XLEOOMZH","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"33O7XLEOOMZHAKDM","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"33O7XLEO","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:811e3f832e895750c572cd7e47b93514287666f6a525ecb447d3917572297144","target":"graph","created_at":"2026-05-18T00:01:52Z","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":"Until a decade ago, galaxy formation simulations were unable to simultaneously reproduce the observed angular momentum (AM) of galaxy disks and bulges. Improvements in the interstellar medium and stellar feedback modelling, together with advances in computational capabilities, have allowed the current generation of cosmological galaxy formation simulations to reproduce the diversity of AM and morphology that is observed in local galaxies. In this review I discuss where we currently stand in this area from the perspective of hydrodynamical simulations, specifically how galaxies gain their AM, a","authors_text":"(2) ASTRO 3D, (3) DAWN), Claudia del P. Lagos ((1) ICRAR/UWA","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-31T02:19:27Z","title":"Angular momentum evolution of galaxies: the perspective of hydrodynamical simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.13074","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":"sha256:4a824c74aae917654671abf542ba1fb88d77f0fff7162c0f49ec2c80cb88cc25","target":"record","created_at":"2026-05-18T00:01:52Z","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":"c4e7ed1a1198e22e94daa3660ee11306cc3c09c34186272d19e5e07e7be8430c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-31T02:19:27Z","title_canon_sha256":"147c0b318d20c2ffc9669ff0b533da01510951c072702e347afd8225e72fb004"},"schema_version":"1.0","source":{"id":"1810.13074","kind":"arxiv","version":1}},"canonical_sha256":"deddfbac8e733270286c0ea4a33e0e47287577cfd38487bf7b423675c6bb0ee2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"deddfbac8e733270286c0ea4a33e0e47287577cfd38487bf7b423675c6bb0ee2","first_computed_at":"2026-05-18T00:01:52.340972Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:52.340972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5Fuy79Yj3bVfqAiNAesaR9THhHdkkV3ktGLSOk5K4McA281kfsP3jpgjCvr8B2ZrBPCjgEmiDZUJ4W/lY2xuAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:52.341392Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.13074","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4a824c74aae917654671abf542ba1fb88d77f0fff7162c0f49ec2c80cb88cc25","sha256:811e3f832e895750c572cd7e47b93514287666f6a525ecb447d3917572297144"],"state_sha256":"c6c2793053b4aee54cc0919cb26f63ecd8a0c88aac771d9708f268c124c0ac4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CUfMs99LAO7TPAZ8o//UDmgMg3rC1uWdE8oKzMvPNJQcajXSG9hjO/7WmlROBIbBlDhEr5sbWaa1emFfUzl4CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T11:43:41.885390Z","bundle_sha256":"e60e6b44e8cc51368de2859cbf050d7ee2e561c2dbe5966e663dd7b8ec84d6fc"}}