{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QZFFFUG633K777IMWXH4BHVAPI","short_pith_number":"pith:QZFFFUG6","canonical_record":{"source":{"id":"1805.06938","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-17T19:17:07Z","cross_cats_sorted":[],"title_canon_sha256":"5192cc2209d276d206e764f3e46915669ef8c4c285eaf33c1e2f862c46476744","abstract_canon_sha256":"1c59bd6e2078526c1d0dad72276a0700f3cdee5caf14a18d85a4e156409bc014"},"schema_version":"1.0"},"canonical_sha256":"864a52d0deded5fffd0cb5cfc09ea07a275adfc91129160ff26fe7db7eff6e30","source":{"kind":"arxiv","id":"1805.06938","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.06938","created_at":"2026-05-18T00:08:06Z"},{"alias_kind":"arxiv_version","alias_value":"1805.06938v2","created_at":"2026-05-18T00:08:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.06938","created_at":"2026-05-18T00:08:06Z"},{"alias_kind":"pith_short_12","alias_value":"QZFFFUG633K7","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QZFFFUG633K777IM","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QZFFFUG6","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QZFFFUG633K777IMWXH4BHVAPI","target":"record","payload":{"canonical_record":{"source":{"id":"1805.06938","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-17T19:17:07Z","cross_cats_sorted":[],"title_canon_sha256":"5192cc2209d276d206e764f3e46915669ef8c4c285eaf33c1e2f862c46476744","abstract_canon_sha256":"1c59bd6e2078526c1d0dad72276a0700f3cdee5caf14a18d85a4e156409bc014"},"schema_version":"1.0"},"canonical_sha256":"864a52d0deded5fffd0cb5cfc09ea07a275adfc91129160ff26fe7db7eff6e30","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:06.945371Z","signature_b64":"vJzUO7Iy3wB+Pn6SnsGEQq5ek0TCpslPk3AW3SZ9iVTabboF25QdcoJiWoUyFiLvY7vfkdIPH1vdwtYRL3aMAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"864a52d0deded5fffd0cb5cfc09ea07a275adfc91129160ff26fe7db7eff6e30","last_reissued_at":"2026-05-18T00:08:06.944185Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:06.944185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.06938","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:08:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AMQe3fy5QOXn8F+3RpUg+bn/NwOAhI+NYMYeRewMXp25AapXJ9LAJiaP5qBel5+kpoyEJaEBcFazO/fuU7YBBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:09:44.407207Z"},"content_sha256":"98ad5f2b873739c139b8979b7073454cc8fd729baf38a4ebd518b92d49aefadf","schema_version":"1.0","event_id":"sha256:98ad5f2b873739c139b8979b7073454cc8fd729baf38a4ebd518b92d49aefadf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QZFFFUG633K777IMWXH4BHVAPI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The impact of assembly bias on the halo occupation in hydrodynamical simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Idit Zehavi, M. Celeste Artale, Peder Norberg, Sergio Contreras","submitted_at":"2018-05-17T19:17:07Z","abstract_excerpt":"We investigate the variations in galaxy occupancy of the dark matter haloes with the large-scale environment and halo formation time, using two state-of-the-art hydrodynamical cosmological simulations, EAGLE and Illustris. For both simulations, we use three galaxy samples with a fixed number density ranked by stellar mass. For these samples we find that low-mass haloes in the most dense environments are more likely to host a central galaxy than those in the least dense environments. When splitting the halo population by formation time, these relations are stronger. Hence, at a fixed low halo m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06938","kind":"arxiv","version":2},"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":"2026-05-18T00:08:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8hMZixHolT3XGWMJc2B6bUQKOB+KgSlaBFkwVn5BpisQ7CkBfKdotjnf4Rv9TEKP1XmVd8VljVPVq98Pj2XOBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:09:44.407949Z"},"content_sha256":"01f039a5f282ebf1d9320376679c224170eee28c1c75e46a2a79333b9abd0a2e","schema_version":"1.0","event_id":"sha256:01f039a5f282ebf1d9320376679c224170eee28c1c75e46a2a79333b9abd0a2e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QZFFFUG633K777IMWXH4BHVAPI/bundle.json","state_url":"https://pith.science/pith/QZFFFUG633K777IMWXH4BHVAPI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QZFFFUG633K777IMWXH4BHVAPI/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":"2026-05-25T17:09:44Z","links":{"resolver":"https://pith.science/pith/QZFFFUG633K777IMWXH4BHVAPI","bundle":"https://pith.science/pith/QZFFFUG633K777IMWXH4BHVAPI/bundle.json","state":"https://pith.science/pith/QZFFFUG633K777IMWXH4BHVAPI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QZFFFUG633K777IMWXH4BHVAPI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QZFFFUG633K777IMWXH4BHVAPI","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":"1c59bd6e2078526c1d0dad72276a0700f3cdee5caf14a18d85a4e156409bc014","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-17T19:17:07Z","title_canon_sha256":"5192cc2209d276d206e764f3e46915669ef8c4c285eaf33c1e2f862c46476744"},"schema_version":"1.0","source":{"id":"1805.06938","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.06938","created_at":"2026-05-18T00:08:06Z"},{"alias_kind":"arxiv_version","alias_value":"1805.06938v2","created_at":"2026-05-18T00:08:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.06938","created_at":"2026-05-18T00:08:06Z"},{"alias_kind":"pith_short_12","alias_value":"QZFFFUG633K7","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QZFFFUG633K777IM","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QZFFFUG6","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:01f039a5f282ebf1d9320376679c224170eee28c1c75e46a2a79333b9abd0a2e","target":"graph","created_at":"2026-05-18T00:08:06Z","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 investigate the variations in galaxy occupancy of the dark matter haloes with the large-scale environment and halo formation time, using two state-of-the-art hydrodynamical cosmological simulations, EAGLE and Illustris. For both simulations, we use three galaxy samples with a fixed number density ranked by stellar mass. For these samples we find that low-mass haloes in the most dense environments are more likely to host a central galaxy than those in the least dense environments. When splitting the halo population by formation time, these relations are stronger. Hence, at a fixed low halo m","authors_text":"Idit Zehavi, M. Celeste Artale, Peder Norberg, Sergio Contreras","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-17T19:17:07Z","title":"The impact of assembly bias on the halo occupation in hydrodynamical simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06938","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":"sha256:98ad5f2b873739c139b8979b7073454cc8fd729baf38a4ebd518b92d49aefadf","target":"record","created_at":"2026-05-18T00:08:06Z","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":"1c59bd6e2078526c1d0dad72276a0700f3cdee5caf14a18d85a4e156409bc014","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-17T19:17:07Z","title_canon_sha256":"5192cc2209d276d206e764f3e46915669ef8c4c285eaf33c1e2f862c46476744"},"schema_version":"1.0","source":{"id":"1805.06938","kind":"arxiv","version":2}},"canonical_sha256":"864a52d0deded5fffd0cb5cfc09ea07a275adfc91129160ff26fe7db7eff6e30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"864a52d0deded5fffd0cb5cfc09ea07a275adfc91129160ff26fe7db7eff6e30","first_computed_at":"2026-05-18T00:08:06.944185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:06.944185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vJzUO7Iy3wB+Pn6SnsGEQq5ek0TCpslPk3AW3SZ9iVTabboF25QdcoJiWoUyFiLvY7vfkdIPH1vdwtYRL3aMAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:06.945371Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.06938","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98ad5f2b873739c139b8979b7073454cc8fd729baf38a4ebd518b92d49aefadf","sha256:01f039a5f282ebf1d9320376679c224170eee28c1c75e46a2a79333b9abd0a2e"],"state_sha256":"b80716c98678fab7a08659a565ad68c42e8b63a433a35cb73d9d0e9ea5b51adb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"79on5w9UEXdyRVjzE9R9P0t9W/IiOS+P7x/lJavroj9FDK20h/Kh9tu6q0OI3/3npuzaK8JQJA4bZdI0tbjnDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:09:44.411992Z","bundle_sha256":"5967773aa991b00470c363af2bf32a9979cd768c0ac2f3b44a652f6fb074508a"}}