{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:FWKQ76ORYUTM5KXKYQ4JKOIEOV","short_pith_number":"pith:FWKQ76OR","schema_version":"1.0","canonical_sha256":"2d950ff9d1c526ceaaeac438953904754e3769aad5e107f565912cf4ded9ed02","source":{"kind":"arxiv","id":"0904.0083","version":1},"attestation_state":"computed","paper":{"title":"On the starting redshift for cosmological simulations: Focusing on halo properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"AIP), Alexander Knebe (UAM, Christian Wagner (AIP), Fabian Krause (AIP), Steffen Knollmann (UAM, Tobias Diekershoff (AIP)","submitted_at":"2009-04-01T07:50:26Z","abstract_excerpt":"We systematically study the effects of varying the starting redshift z_i for cosmological simulations in the highly non-linear regime. Our primary focus lies with the (individual) properties of dark matter halos -- namely the mass, spin, triaxiality, and concentration -- where we find that even substantial variations in z_i leave only a small imprint, at least for the probed mass range M \\in [10^{10}, 10^{13}] Msun/h and when investigated at redshift z=0. We further compare simulations started by using the standard Zel'dovich approximation to runs based upon initial conditions produced with se"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0904.0083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-01T07:50:26Z","cross_cats_sorted":[],"title_canon_sha256":"634009beb678a73f66a4d2f2e516524fa8d029b766740b312802c9f9850e32cb","abstract_canon_sha256":"8d1737c3d8805b182350ded9a0ab7f923cbf2e0cfcaf71c018f550794f809e89"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:15.460099Z","signature_b64":"BVITuE0KI1DnyTxshYEJGgOm0Yan4Cpl4imZs7XItO3K4rzeTeTE2/EZktl4TwWugSS7VaVVif6ex7J0nI+dDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d950ff9d1c526ceaaeac438953904754e3769aad5e107f565912cf4ded9ed02","last_reissued_at":"2026-05-18T04:29:15.459457Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:15.459457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the starting redshift for cosmological simulations: Focusing on halo properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"AIP), Alexander Knebe (UAM, Christian Wagner (AIP), Fabian Krause (AIP), Steffen Knollmann (UAM, Tobias Diekershoff (AIP)","submitted_at":"2009-04-01T07:50:26Z","abstract_excerpt":"We systematically study the effects of varying the starting redshift z_i for cosmological simulations in the highly non-linear regime. Our primary focus lies with the (individual) properties of dark matter halos -- namely the mass, spin, triaxiality, and concentration -- where we find that even substantial variations in z_i leave only a small imprint, at least for the probed mass range M \\in [10^{10}, 10^{13}] Msun/h and when investigated at redshift z=0. We further compare simulations started by using the standard Zel'dovich approximation to runs based upon initial conditions produced with se"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.0083","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0904.0083","created_at":"2026-05-18T04:29:15.459542+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.0083v1","created_at":"2026-05-18T04:29:15.459542+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.0083","created_at":"2026-05-18T04:29:15.459542+00:00"},{"alias_kind":"pith_short_12","alias_value":"FWKQ76ORYUTM","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"FWKQ76ORYUTM5KXK","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"FWKQ76OR","created_at":"2026-05-18T12:25:59.703012+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV","json":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV.json","graph_json":"https://pith.science/api/pith-number/FWKQ76ORYUTM5KXKYQ4JKOIEOV/graph.json","events_json":"https://pith.science/api/pith-number/FWKQ76ORYUTM5KXKYQ4JKOIEOV/events.json","paper":"https://pith.science/paper/FWKQ76OR"},"agent_actions":{"view_html":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV","download_json":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV.json","view_paper":"https://pith.science/paper/FWKQ76OR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.0083&json=true","fetch_graph":"https://pith.science/api/pith-number/FWKQ76ORYUTM5KXKYQ4JKOIEOV/graph.json","fetch_events":"https://pith.science/api/pith-number/FWKQ76ORYUTM5KXKYQ4JKOIEOV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV/action/storage_attestation","attest_author":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV/action/author_attestation","sign_citation":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV/action/citation_signature","submit_replication":"https://pith.science/pith/FWKQ76ORYUTM5KXKYQ4JKOIEOV/action/replication_record"}},"created_at":"2026-05-18T04:29:15.459542+00:00","updated_at":"2026-05-18T04:29:15.459542+00:00"}