{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:HQGHTFT2HN5P5E73B6QSOTSQSA","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":"8345eb3c45bd0315151c8be2e362af9667b89edc5158b13324a68e22e1544bd4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-01-31T18:46:39Z","title_canon_sha256":"ee24fcb3b3a9f3f8115b9ee33c183dee875418f6b24e2c081314161fbaefeb89"},"schema_version":"1.0","source":{"id":"2201.13434","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.13434","created_at":"2026-07-05T04:45:00Z"},{"alias_kind":"arxiv_version","alias_value":"2201.13434v2","created_at":"2026-07-05T04:45:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.13434","created_at":"2026-07-05T04:45:00Z"},{"alias_kind":"pith_short_12","alias_value":"HQGHTFT2HN5P","created_at":"2026-07-05T04:45:00Z"},{"alias_kind":"pith_short_16","alias_value":"HQGHTFT2HN5P5E73","created_at":"2026-07-05T04:45:00Z"},{"alias_kind":"pith_short_8","alias_value":"HQGHTFT2","created_at":"2026-07-05T04:45:00Z"}],"graph_snapshots":[{"event_id":"sha256:12c299cd65b6a2665a911a5bbee5524753fe76d51026bd9a8efd64c2c97c8842","target":"graph","created_at":"2026-07-05T04:45:00Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2201.13434/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Eridanus II (EriII) 'ultra-faint' dwarf has a large ($15\\,\\text{pc}$) and low mass ($4.3\\times10^3\\,\\text{M}_\\odot$) star cluster (SC) offset from its centre by $23\\pm3\\,\\text{pc}$ in projection. Its size and offset are naturally explained if EriII has a central dark matter core, but such a core may be challenging to explain in a $\\Lambda$CDM cosmology. In this paper, we revisit the survival and evolution of EriII's SC, focussing for the first time on its puzzlingly large ellipticity ($0.31^{+0.05}_{-0.06}$). We perform a suite of 960 direct $N$-body simulations of SCs, orbiting within a r","authors_text":"Alex Goater, Andrew Pontzen, Ethan Taylor, Justin I. Read, Martin P. Rey, Matthew D. A. Orkney, Maxime Delorme, Oscar Agertz, Stacy Y. Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-01-31T18:46:39Z","title":"EDGE: the puzzling ellipticity of Eridanus II's star cluster and its implications for dark matter at the heart of an ultra-faint dwarf"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.13434","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:a6cfec4ffcca67ac8cb864403719d06e274411af5cb530a6a7ec7b450bd8b462","target":"record","created_at":"2026-07-05T04:45:00Z","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":"8345eb3c45bd0315151c8be2e362af9667b89edc5158b13324a68e22e1544bd4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-01-31T18:46:39Z","title_canon_sha256":"ee24fcb3b3a9f3f8115b9ee33c183dee875418f6b24e2c081314161fbaefeb89"},"schema_version":"1.0","source":{"id":"2201.13434","kind":"arxiv","version":2}},"canonical_sha256":"3c0c79967a3b7afe93fb0fa1274e509038e9776594ddf1b2ac283f2a027f15c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3c0c79967a3b7afe93fb0fa1274e509038e9776594ddf1b2ac283f2a027f15c0","first_computed_at":"2026-07-05T04:45:00.202130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:45:00.202130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K99jDfIr2x0r7fz9p1PbSzN3OBgziYtc7h28NSTPiNE4sZsIz0fxqXqHppkLOotBMwnYrsN42E/BT5cacbpaDg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:45:00.202630Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.13434","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6cfec4ffcca67ac8cb864403719d06e274411af5cb530a6a7ec7b450bd8b462","sha256:12c299cd65b6a2665a911a5bbee5524753fe76d51026bd9a8efd64c2c97c8842"],"state_sha256":"91bb0a62f924de5b98a08205a305f7780f87aaca09c66b936d7148543be87a59"}