{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:NQRI4R7OMQKYY5OKUFB4K7J54C","short_pith_number":"pith:NQRI4R7O","schema_version":"1.0","canonical_sha256":"6c228e47ee64158c75caa143c57d3de0b642f49990ca33ab3c0e7dced2adea6b","source":{"kind":"arxiv","id":"1010.6197","version":2},"attestation_state":"computed","paper":{"title":"A Halo Expansion (HEX) Technique for Approximating Simulated Dark Matter Haloes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Adrian Jenkins, Ben Lowing, Carlos Frenk, Vincent Eke","submitted_at":"2010-10-29T13:05:57Z","abstract_excerpt":"We apply a basis function expansion method to create a time-evolving density/potential approximation of the late growth of simulated N-body dark matter haloes. We demonstrate how the potential of a halo from the Aquarius Project can be accurately represented by a small number of basis functions, and show that the halo expansion (HEX) method provides a way to replay simulations. We explore the level of accuracy of the technique as well as some of its limitations. We find that the number of terms included in the expansion must be large enough to resolve the large-scale distribution and shape of "},"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":"1010.6197","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-29T13:05:57Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"639ca013ed1ece8fa836cfbe93dc5822580190d89451b6e601151048a669e73b","abstract_canon_sha256":"e872ea90a1044c02b10fa7b5794c1d15a40b6aced593e0e548731bbf0ba579a3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:54.969264Z","signature_b64":"iFZuiIVfBg7lIa8gKJzoJcVPCbkD2DXFoxMqTP465XlkVWcwWEKO9vBV/zqKS++TE9iFbESjtXoc/0Qz0D8JDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c228e47ee64158c75caa143c57d3de0b642f49990ca33ab3c0e7dced2adea6b","last_reissued_at":"2026-05-18T02:04:54.968543Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:54.968543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Halo Expansion (HEX) Technique for Approximating Simulated Dark Matter Haloes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Adrian Jenkins, Ben Lowing, Carlos Frenk, Vincent Eke","submitted_at":"2010-10-29T13:05:57Z","abstract_excerpt":"We apply a basis function expansion method to create a time-evolving density/potential approximation of the late growth of simulated N-body dark matter haloes. We demonstrate how the potential of a halo from the Aquarius Project can be accurately represented by a small number of basis functions, and show that the halo expansion (HEX) method provides a way to replay simulations. We explore the level of accuracy of the technique as well as some of its limitations. We find that the number of terms included in the expansion must be large enough to resolve the large-scale distribution and shape of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.6197","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1010.6197","created_at":"2026-05-18T02:04:54.968669+00:00"},{"alias_kind":"arxiv_version","alias_value":"1010.6197v2","created_at":"2026-05-18T02:04:54.968669+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.6197","created_at":"2026-05-18T02:04:54.968669+00:00"},{"alias_kind":"pith_short_12","alias_value":"NQRI4R7OMQKY","created_at":"2026-05-18T12:26:10.704358+00:00"},{"alias_kind":"pith_short_16","alias_value":"NQRI4R7OMQKYY5OK","created_at":"2026-05-18T12:26:10.704358+00:00"},{"alias_kind":"pith_short_8","alias_value":"NQRI4R7O","created_at":"2026-05-18T12:26:10.704358+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/NQRI4R7OMQKYY5OKUFB4K7J54C","json":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C.json","graph_json":"https://pith.science/api/pith-number/NQRI4R7OMQKYY5OKUFB4K7J54C/graph.json","events_json":"https://pith.science/api/pith-number/NQRI4R7OMQKYY5OKUFB4K7J54C/events.json","paper":"https://pith.science/paper/NQRI4R7O"},"agent_actions":{"view_html":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C","download_json":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C.json","view_paper":"https://pith.science/paper/NQRI4R7O","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1010.6197&json=true","fetch_graph":"https://pith.science/api/pith-number/NQRI4R7OMQKYY5OKUFB4K7J54C/graph.json","fetch_events":"https://pith.science/api/pith-number/NQRI4R7OMQKYY5OKUFB4K7J54C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C/action/storage_attestation","attest_author":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C/action/author_attestation","sign_citation":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C/action/citation_signature","submit_replication":"https://pith.science/pith/NQRI4R7OMQKYY5OKUFB4K7J54C/action/replication_record"}},"created_at":"2026-05-18T02:04:54.968669+00:00","updated_at":"2026-05-18T02:04:54.968669+00:00"}