{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:53YQQLGYHWCX6G47FQ7TNN22J5","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":"885f00abda808d0b8b03c820be892f72b944dded498c5f7b8ae67a757f60646d","cross_cats_sorted":["hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-29T00:12:12Z","title_canon_sha256":"14fd526de42609f6b04569318ea03d188e2c99805f691f30df9301996533c2eb"},"schema_version":"1.0","source":{"id":"2409.19493","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.19493","created_at":"2026-07-05T09:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"2409.19493v2","created_at":"2026-07-05T09:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.19493","created_at":"2026-07-05T09:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"53YQQLGYHWCX","created_at":"2026-07-05T09:54:47Z"},{"alias_kind":"pith_short_16","alias_value":"53YQQLGYHWCX6G47","created_at":"2026-07-05T09:54:47Z"},{"alias_kind":"pith_short_8","alias_value":"53YQQLGY","created_at":"2026-07-05T09:54:47Z"}],"graph_snapshots":[{"event_id":"sha256:2b5437accfa6943539a250906cc7137f2961730662d24414735d7cfba4249185","target":"graph","created_at":"2026-07-05T09:54:47Z","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/2409.19493/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model. In self-interacting dark matter (SIDM), however, a halo could evolve into a phase of gravothermal collapse, resulting in a higher central density than its CDM counterpart. We conduct high-resolution controlled N-body simulations to show that a collapsed SIDM halo could account for the GD-1 perturber's high density. We model a progenitor halo with ","authors_text":"Daneng Yang, Ethan O. Nadler, Hai-Bo Yu, Xingyu Zhang","cross_cats":["hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-29T00:12:12Z","title":"The GD-1 stellar stream perturber as a core-collapsed self-interacting dark matter halo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.19493","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":"sha256:16c070bf38a20305eae1db450d72b7c389a70ccb8a47ee339cf09661b3ede80d","target":"record","created_at":"2026-07-05T09:54:47Z","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":"885f00abda808d0b8b03c820be892f72b944dded498c5f7b8ae67a757f60646d","cross_cats_sorted":["hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-29T00:12:12Z","title_canon_sha256":"14fd526de42609f6b04569318ea03d188e2c99805f691f30df9301996533c2eb"},"schema_version":"1.0","source":{"id":"2409.19493","kind":"arxiv","version":2}},"canonical_sha256":"eef1082cd83d857f1b9f2c3f36b75a4f54c517cfdab1df89b925cf06ab0d0ba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eef1082cd83d857f1b9f2c3f36b75a4f54c517cfdab1df89b925cf06ab0d0ba9","first_computed_at":"2026-07-05T09:54:47.533518Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:54:47.533518Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1BginPYPc7N4UgdI1oTCVAltPbMKjgN7cf68gg04yt6jQ2VqKGEkOS4z8jnqSQJMbKsN2uJpPooA+ky0iUGQBA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:54:47.533932Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.19493","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16c070bf38a20305eae1db450d72b7c389a70ccb8a47ee339cf09661b3ede80d","sha256:2b5437accfa6943539a250906cc7137f2961730662d24414735d7cfba4249185"],"state_sha256":"0873b4066e648d3b1c9aa2700094de428fb47b4a6e95d27be63fca7a79ac9405"}