{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:YMDRA7MLTWJ6TQJ7BRQSASTEIP","short_pith_number":"pith:YMDRA7ML","schema_version":"1.0","canonical_sha256":"c307107d8b9d93e9c13f0c61204a6443fc9fa94d6fd1494b4044913364bed0ec","source":{"kind":"arxiv","id":"1608.03441","version":2},"attestation_state":"computed","paper":{"title":"Tidal origin of spiral arms in galaxies orbiting a cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Andres del Pino, Ewa L. Lokas, Marcin Semczuk","submitted_at":"2016-08-11T12:50:29Z","abstract_excerpt":"One of the scenarios for the formation of grand-design spiral arms in disky galaxies involves their interactions with a satellite or another galaxy. Here we consider another possibility, where the perturbation is instead due to the potential of a galaxy cluster. Using $N$-body simulations we investigate the formation and evolution of spiral arms in a Milky Way-like galaxy orbiting a Virgo-like cluster. The galaxy is placed on a few orbits of different size but similar eccentricity and its evolution is followed for 10 Gyr. The tidally induced, two-armed, approximately logarithmic spiral structu"},"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":"1608.03441","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-08-11T12:50:29Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"81e745a6961459ab5711b62e74318f2a407d63cfc9ed4feabf825969c822f6e2","abstract_canon_sha256":"928c763592c5f22fede176d649cf0028dbf47db71426ed969f853c15ffbd5188"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:53:59.365331Z","signature_b64":"yF8v27/ubLQdArNNabgrLkupc64F8s5TYsJaltQGhyI2rdYp87XkmfsuPuHfBymPEbsl/JfkPmL6hu5zJVfqAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c307107d8b9d93e9c13f0c61204a6443fc9fa94d6fd1494b4044913364bed0ec","last_reissued_at":"2026-05-18T00:53:59.364694Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:53:59.364694Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Tidal origin of spiral arms in galaxies orbiting a cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Andres del Pino, Ewa L. Lokas, Marcin Semczuk","submitted_at":"2016-08-11T12:50:29Z","abstract_excerpt":"One of the scenarios for the formation of grand-design spiral arms in disky galaxies involves their interactions with a satellite or another galaxy. Here we consider another possibility, where the perturbation is instead due to the potential of a galaxy cluster. Using $N$-body simulations we investigate the formation and evolution of spiral arms in a Milky Way-like galaxy orbiting a Virgo-like cluster. The galaxy is placed on a few orbits of different size but similar eccentricity and its evolution is followed for 10 Gyr. The tidally induced, two-armed, approximately logarithmic spiral structu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.03441","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":"1608.03441","created_at":"2026-05-18T00:53:59.364798+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.03441v2","created_at":"2026-05-18T00:53:59.364798+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.03441","created_at":"2026-05-18T00:53:59.364798+00:00"},{"alias_kind":"pith_short_12","alias_value":"YMDRA7MLTWJ6","created_at":"2026-05-18T12:30:53.716459+00:00"},{"alias_kind":"pith_short_16","alias_value":"YMDRA7MLTWJ6TQJ7","created_at":"2026-05-18T12:30:53.716459+00:00"},{"alias_kind":"pith_short_8","alias_value":"YMDRA7ML","created_at":"2026-05-18T12:30:53.716459+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/YMDRA7MLTWJ6TQJ7BRQSASTEIP","json":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP.json","graph_json":"https://pith.science/api/pith-number/YMDRA7MLTWJ6TQJ7BRQSASTEIP/graph.json","events_json":"https://pith.science/api/pith-number/YMDRA7MLTWJ6TQJ7BRQSASTEIP/events.json","paper":"https://pith.science/paper/YMDRA7ML"},"agent_actions":{"view_html":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP","download_json":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP.json","view_paper":"https://pith.science/paper/YMDRA7ML","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.03441&json=true","fetch_graph":"https://pith.science/api/pith-number/YMDRA7MLTWJ6TQJ7BRQSASTEIP/graph.json","fetch_events":"https://pith.science/api/pith-number/YMDRA7MLTWJ6TQJ7BRQSASTEIP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP/action/storage_attestation","attest_author":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP/action/author_attestation","sign_citation":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP/action/citation_signature","submit_replication":"https://pith.science/pith/YMDRA7MLTWJ6TQJ7BRQSASTEIP/action/replication_record"}},"created_at":"2026-05-18T00:53:59.364798+00:00","updated_at":"2026-05-18T00:53:59.364798+00:00"}