{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:K4FDQOPVEJSWPTQZPONYTE3YGI","short_pith_number":"pith:K4FDQOPV","schema_version":"1.0","canonical_sha256":"570a3839f5226567ce197b9b8993783237f41ec09c5d8a626ae31bc7121e5772","source":{"kind":"arxiv","id":"1805.03658","version":2},"attestation_state":"computed","paper":{"title":"Bar resilience to flybys in a cosmological framework","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Francesco Haardt, Lucio Mayer, Massimo Dotti, Pedro R. Capelo, Sijing Shen, Silvia Bonoli, Tommaso Zana","submitted_at":"2018-05-09T18:00:03Z","abstract_excerpt":"It has been proposed that close interactions with satellite galaxies can significantly perturb the morphology of the main galaxy. However, the dynamics of an already formed bar following the interaction with the external environment has not been studied in detail in a fully cosmological context. In this work, analysing the cosmological zoom-in simulation Eris2k, we study the effects that a very unequal-mass flyby crossing the stellar disc has on the stability of the pre-existing bar. We characterize the evolution of the bar strength and length showing that the perturbation exerted by the flyby"},"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":"1805.03658","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-09T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"5cdd0910843ae33b5a0fa7c65c2a5143e7afd88c8c9b23ecc634d483a325f54d","abstract_canon_sha256":"3b6374bb269b25311b0ad8e9f418a757d842dbd19f8b310ecf01862401df3363"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:16.772904Z","signature_b64":"aHbkZbdpRLjSyiz3opSPxqw+KZjN6Fdn7gCdlEzavoqn/qmu8Yb96nHkn/X3XapC18b6zCzIexj/3Ir/uQ1wAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"570a3839f5226567ce197b9b8993783237f41ec09c5d8a626ae31bc7121e5772","last_reissued_at":"2026-05-18T00:10:16.772421Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:16.772421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Bar resilience to flybys in a cosmological framework","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Francesco Haardt, Lucio Mayer, Massimo Dotti, Pedro R. Capelo, Sijing Shen, Silvia Bonoli, Tommaso Zana","submitted_at":"2018-05-09T18:00:03Z","abstract_excerpt":"It has been proposed that close interactions with satellite galaxies can significantly perturb the morphology of the main galaxy. However, the dynamics of an already formed bar following the interaction with the external environment has not been studied in detail in a fully cosmological context. In this work, analysing the cosmological zoom-in simulation Eris2k, we study the effects that a very unequal-mass flyby crossing the stellar disc has on the stability of the pre-existing bar. We characterize the evolution of the bar strength and length showing that the perturbation exerted by the flyby"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03658","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":"1805.03658","created_at":"2026-05-18T00:10:16.772500+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.03658v2","created_at":"2026-05-18T00:10:16.772500+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03658","created_at":"2026-05-18T00:10:16.772500+00:00"},{"alias_kind":"pith_short_12","alias_value":"K4FDQOPVEJSW","created_at":"2026-05-18T12:32:33.847187+00:00"},{"alias_kind":"pith_short_16","alias_value":"K4FDQOPVEJSWPTQZ","created_at":"2026-05-18T12:32:33.847187+00:00"},{"alias_kind":"pith_short_8","alias_value":"K4FDQOPV","created_at":"2026-05-18T12:32:33.847187+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/K4FDQOPVEJSWPTQZPONYTE3YGI","json":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI.json","graph_json":"https://pith.science/api/pith-number/K4FDQOPVEJSWPTQZPONYTE3YGI/graph.json","events_json":"https://pith.science/api/pith-number/K4FDQOPVEJSWPTQZPONYTE3YGI/events.json","paper":"https://pith.science/paper/K4FDQOPV"},"agent_actions":{"view_html":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI","download_json":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI.json","view_paper":"https://pith.science/paper/K4FDQOPV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.03658&json=true","fetch_graph":"https://pith.science/api/pith-number/K4FDQOPVEJSWPTQZPONYTE3YGI/graph.json","fetch_events":"https://pith.science/api/pith-number/K4FDQOPVEJSWPTQZPONYTE3YGI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI/action/storage_attestation","attest_author":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI/action/author_attestation","sign_citation":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI/action/citation_signature","submit_replication":"https://pith.science/pith/K4FDQOPVEJSWPTQZPONYTE3YGI/action/replication_record"}},"created_at":"2026-05-18T00:10:16.772500+00:00","updated_at":"2026-05-18T00:10:16.772500+00:00"}