{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:QDFODSVFUQJDB2F2PA4FMSMHIS","short_pith_number":"pith:QDFODSVF","schema_version":"1.0","canonical_sha256":"80cae1caa5a41230e8ba78385649874490a09d9776c26e378cca7948ea2b1247","source":{"kind":"arxiv","id":"1310.1731","version":2},"attestation_state":"computed","paper":{"title":"On the cross-section of Dark Matter using substructure infall into galaxy clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andy Taylor, Daisuke Nagai, David Harvey, Eric Tittley, Erwin T. Lau, Richard Massey, Scott T. Kay, Simon R. Pike, Thomas D. Kitching","submitted_at":"2013-10-07T11:05:03Z","abstract_excerpt":"We develop a statistical method to measure the interaction cross-section of Dark Matter, exploiting the continuous minor merger events in which small substructures fall into galaxy clusters. We find that by taking the ratio of the distances between the galaxies and Dark Matter, and galaxies and gas in accreting sub-halos, we form a quantity that can be statistically averaged over a large sample of systems whilst removing any inherent line-of-sight projections. In order to interpret this ratio as a cross-section of Dark Matter we derive an analytical description of sub-halo infall which encompa"},"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":"1310.1731","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-07T11:05:03Z","cross_cats_sorted":[],"title_canon_sha256":"094656cca289c0e6a8cc2bfe341a468b07512b88ce58136c6f3c0fa749b8673f","abstract_canon_sha256":"e1070697ff36670fafbab7283f9abdf952d08b64e1ccd5ab1b8b2f9f47667229"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:14.555515Z","signature_b64":"IEGbLrxv1W1nnEV7eI5WAXKksohUdi9Tx5iOvsEJZHLyJowFUcElxQmytQNxN2C2BaGjktsKomyV6XwPfTTBCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80cae1caa5a41230e8ba78385649874490a09d9776c26e378cca7948ea2b1247","last_reissued_at":"2026-05-18T01:47:14.554749Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:14.554749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the cross-section of Dark Matter using substructure infall into galaxy clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andy Taylor, Daisuke Nagai, David Harvey, Eric Tittley, Erwin T. Lau, Richard Massey, Scott T. Kay, Simon R. Pike, Thomas D. Kitching","submitted_at":"2013-10-07T11:05:03Z","abstract_excerpt":"We develop a statistical method to measure the interaction cross-section of Dark Matter, exploiting the continuous minor merger events in which small substructures fall into galaxy clusters. We find that by taking the ratio of the distances between the galaxies and Dark Matter, and galaxies and gas in accreting sub-halos, we form a quantity that can be statistically averaged over a large sample of systems whilst removing any inherent line-of-sight projections. In order to interpret this ratio as a cross-section of Dark Matter we derive an analytical description of sub-halo infall which encompa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.1731","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":"1310.1731","created_at":"2026-05-18T01:47:14.554864+00:00"},{"alias_kind":"arxiv_version","alias_value":"1310.1731v2","created_at":"2026-05-18T01:47:14.554864+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.1731","created_at":"2026-05-18T01:47:14.554864+00:00"},{"alias_kind":"pith_short_12","alias_value":"QDFODSVFUQJD","created_at":"2026-05-18T12:27:57.521954+00:00"},{"alias_kind":"pith_short_16","alias_value":"QDFODSVFUQJDB2F2","created_at":"2026-05-18T12:27:57.521954+00:00"},{"alias_kind":"pith_short_8","alias_value":"QDFODSVF","created_at":"2026-05-18T12:27:57.521954+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/QDFODSVFUQJDB2F2PA4FMSMHIS","json":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS.json","graph_json":"https://pith.science/api/pith-number/QDFODSVFUQJDB2F2PA4FMSMHIS/graph.json","events_json":"https://pith.science/api/pith-number/QDFODSVFUQJDB2F2PA4FMSMHIS/events.json","paper":"https://pith.science/paper/QDFODSVF"},"agent_actions":{"view_html":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS","download_json":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS.json","view_paper":"https://pith.science/paper/QDFODSVF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1310.1731&json=true","fetch_graph":"https://pith.science/api/pith-number/QDFODSVFUQJDB2F2PA4FMSMHIS/graph.json","fetch_events":"https://pith.science/api/pith-number/QDFODSVFUQJDB2F2PA4FMSMHIS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS/action/storage_attestation","attest_author":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS/action/author_attestation","sign_citation":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS/action/citation_signature","submit_replication":"https://pith.science/pith/QDFODSVFUQJDB2F2PA4FMSMHIS/action/replication_record"}},"created_at":"2026-05-18T01:47:14.554864+00:00","updated_at":"2026-05-18T01:47:14.554864+00:00"}