{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:2A45BKS7IN2MSAKXHGGAOWSIOQ","short_pith_number":"pith:2A45BKS7","schema_version":"1.0","canonical_sha256":"d039d0aa5f4374c90157398c075a48743229cd3e3c7fb5deaa1100ac81822794","source":{"kind":"arxiv","id":"2112.01540","version":2},"attestation_state":"computed","paper":{"title":"Galactic tides and the Crater II dwarf spheroidal: a challenge to LCDM?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexandra Borukhovetskaya, Azadeh Fattahi, Julio F. Navarro, Raphael Errani","submitted_at":"2021-12-02T19:00:00Z","abstract_excerpt":"The unusually low velocity dispersion and large size of Crater II pose a challenge to our understanding of dwarf galaxies in the Lambda Cold Dark Matter (LCDM) cosmogony. The low velocity dispersion suggests either a dark halo mass much lower than the minimum expected from hydrogen cooling limit arguments, or one that is in the late stages of extreme tidal stripping. The tidal interpretation has been favoured in recent work and is supported by the small pericentric distances consistent with available kinematic estimates. We use N-body simulations to examine this interpretation in detail, assum"},"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":"2112.01540","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-12-02T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"7173a5af887f63c2a3385686869e2a62f37583f40e2225dd6d3a5f927d90ad40","abstract_canon_sha256":"51b416357ffca5fa7a1236fe74491b056fc35a99122c42a3ff7c1f9c52c000d0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:17:18.856687Z","signature_b64":"yAE03tM4GwHElto++WBGaSm4OUMMXUaSmDw4RLEahJtz5A2hVoGU5jTue9b+MOm6DCzsCR1Ozlqv1mu6vZt9DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d039d0aa5f4374c90157398c075a48743229cd3e3c7fb5deaa1100ac81822794","last_reissued_at":"2026-07-05T04:17:18.856217Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:17:18.856217Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Galactic tides and the Crater II dwarf spheroidal: a challenge to LCDM?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexandra Borukhovetskaya, Azadeh Fattahi, Julio F. Navarro, Raphael Errani","submitted_at":"2021-12-02T19:00:00Z","abstract_excerpt":"The unusually low velocity dispersion and large size of Crater II pose a challenge to our understanding of dwarf galaxies in the Lambda Cold Dark Matter (LCDM) cosmogony. The low velocity dispersion suggests either a dark halo mass much lower than the minimum expected from hydrogen cooling limit arguments, or one that is in the late stages of extreme tidal stripping. The tidal interpretation has been favoured in recent work and is supported by the small pericentric distances consistent with available kinematic estimates. We use N-body simulations to examine this interpretation in detail, assum"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.01540","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.01540/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2112.01540","created_at":"2026-07-05T04:17:18.856273+00:00"},{"alias_kind":"arxiv_version","alias_value":"2112.01540v2","created_at":"2026-07-05T04:17:18.856273+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.01540","created_at":"2026-07-05T04:17:18.856273+00:00"},{"alias_kind":"pith_short_12","alias_value":"2A45BKS7IN2M","created_at":"2026-07-05T04:17:18.856273+00:00"},{"alias_kind":"pith_short_16","alias_value":"2A45BKS7IN2MSAKX","created_at":"2026-07-05T04:17:18.856273+00:00"},{"alias_kind":"pith_short_8","alias_value":"2A45BKS7","created_at":"2026-07-05T04:17:18.856273+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2605.31335","citing_title":"Gravothermal Collapse: Robust Against Baryonic Feedback","ref_index":82,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ","json":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ.json","graph_json":"https://pith.science/api/pith-number/2A45BKS7IN2MSAKXHGGAOWSIOQ/graph.json","events_json":"https://pith.science/api/pith-number/2A45BKS7IN2MSAKXHGGAOWSIOQ/events.json","paper":"https://pith.science/paper/2A45BKS7"},"agent_actions":{"view_html":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ","download_json":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ.json","view_paper":"https://pith.science/paper/2A45BKS7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2112.01540&json=true","fetch_graph":"https://pith.science/api/pith-number/2A45BKS7IN2MSAKXHGGAOWSIOQ/graph.json","fetch_events":"https://pith.science/api/pith-number/2A45BKS7IN2MSAKXHGGAOWSIOQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ/action/storage_attestation","attest_author":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ/action/author_attestation","sign_citation":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ/action/citation_signature","submit_replication":"https://pith.science/pith/2A45BKS7IN2MSAKXHGGAOWSIOQ/action/replication_record"}},"created_at":"2026-07-05T04:17:18.856273+00:00","updated_at":"2026-07-05T04:17:18.856273+00:00"}