{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:HL5RKK7H3EJYUIDMJHDKSSYFJO","short_pith_number":"pith:HL5RKK7H","schema_version":"1.0","canonical_sha256":"3afb152be7d9138a206c49c6a94b054bb7b98bc671305c8392e0a0555379bee4","source":{"kind":"arxiv","id":"1107.2401","version":2},"attestation_state":"computed","paper":{"title":"Interaction between dark matter sub-halos & galactic gaseous disk","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Andrea V. Macci\\`o, Anna Pasquali, Benjamin P. Moster, Fabian Walter, Rahul Kannan","submitted_at":"2011-07-12T20:00:02Z","abstract_excerpt":"We investigate the idea that the interaction of Dark Matter (DM) sub-halos with the gaseous disk of galaxies can be the origin for the observed holes and shells found in their neutral hydrogen (HI) distributions. We use high resolution hydrodynamic simulations to show that pure DM sub-halos impacting a galactic disk are not able to produce holes; on the contrary, they result in high density regions in the disk. However, sub-halos containing a small amount of gas (a few percent of the total DM mass of the sub-halo) are able to displace the gas in the disk and form holes and shells. The size and"},"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":"1107.2401","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-07-12T20:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"79f666ccebb68b956fd56828b24173e198010673f3b07ab14c98f0344a4e9e1a","abstract_canon_sha256":"fbdc5bc8b329dc7a91404c66497c406a299b5e37f0563fb03fb68d865a8fd4cb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:19.396648Z","signature_b64":"2eOtqEeeRk00YQkhhfwz8YOggcixa5s7Q6qlwZYAA51UcV69RF8mPzO83/5WyFCk/S44U/4DhkVo9dMlUWTzAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3afb152be7d9138a206c49c6a94b054bb7b98bc671305c8392e0a0555379bee4","last_reissued_at":"2026-05-18T02:01:19.395906Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:19.395906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Interaction between dark matter sub-halos & galactic gaseous disk","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Andrea V. Macci\\`o, Anna Pasquali, Benjamin P. Moster, Fabian Walter, Rahul Kannan","submitted_at":"2011-07-12T20:00:02Z","abstract_excerpt":"We investigate the idea that the interaction of Dark Matter (DM) sub-halos with the gaseous disk of galaxies can be the origin for the observed holes and shells found in their neutral hydrogen (HI) distributions. We use high resolution hydrodynamic simulations to show that pure DM sub-halos impacting a galactic disk are not able to produce holes; on the contrary, they result in high density regions in the disk. However, sub-halos containing a small amount of gas (a few percent of the total DM mass of the sub-halo) are able to displace the gas in the disk and form holes and shells. The size and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.2401","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":"1107.2401","created_at":"2026-05-18T02:01:19.396024+00:00"},{"alias_kind":"arxiv_version","alias_value":"1107.2401v2","created_at":"2026-05-18T02:01:19.396024+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.2401","created_at":"2026-05-18T02:01:19.396024+00:00"},{"alias_kind":"pith_short_12","alias_value":"HL5RKK7H3EJY","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_16","alias_value":"HL5RKK7H3EJYUIDM","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_8","alias_value":"HL5RKK7H","created_at":"2026-05-18T12:26:30.835961+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/HL5RKK7H3EJYUIDMJHDKSSYFJO","json":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO.json","graph_json":"https://pith.science/api/pith-number/HL5RKK7H3EJYUIDMJHDKSSYFJO/graph.json","events_json":"https://pith.science/api/pith-number/HL5RKK7H3EJYUIDMJHDKSSYFJO/events.json","paper":"https://pith.science/paper/HL5RKK7H"},"agent_actions":{"view_html":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO","download_json":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO.json","view_paper":"https://pith.science/paper/HL5RKK7H","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1107.2401&json=true","fetch_graph":"https://pith.science/api/pith-number/HL5RKK7H3EJYUIDMJHDKSSYFJO/graph.json","fetch_events":"https://pith.science/api/pith-number/HL5RKK7H3EJYUIDMJHDKSSYFJO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO/action/storage_attestation","attest_author":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO/action/author_attestation","sign_citation":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO/action/citation_signature","submit_replication":"https://pith.science/pith/HL5RKK7H3EJYUIDMJHDKSSYFJO/action/replication_record"}},"created_at":"2026-05-18T02:01:19.396024+00:00","updated_at":"2026-05-18T02:01:19.396024+00:00"}