{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:WKYVMPQD45XCRAOBOKZDDVOOAL","short_pith_number":"pith:WKYVMPQD","canonical_record":{"source":{"id":"1105.4231","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-21T08:29:49Z","cross_cats_sorted":[],"title_canon_sha256":"ef88b50e6bce54f37425a9d9765e3474fbd5527a8abc1d935543a44b78b6e376","abstract_canon_sha256":"1a32f5592a5dfd000858364d13576b77222a14c69987ddc78d951fc1058d1e26"},"schema_version":"1.0"},"canonical_sha256":"b2b1563e03e76e2881c172b231d5ce02e9eaf1906c569ad6ccc8be3fda0b8fd5","source":{"kind":"arxiv","id":"1105.4231","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.4231","created_at":"2026-05-18T02:01:53Z"},{"alias_kind":"arxiv_version","alias_value":"1105.4231v2","created_at":"2026-05-18T02:01:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.4231","created_at":"2026-05-18T02:01:53Z"},{"alias_kind":"pith_short_12","alias_value":"WKYVMPQD45XC","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WKYVMPQD45XCRAOB","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WKYVMPQD","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:WKYVMPQD45XCRAOBOKZDDVOOAL","target":"record","payload":{"canonical_record":{"source":{"id":"1105.4231","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-21T08:29:49Z","cross_cats_sorted":[],"title_canon_sha256":"ef88b50e6bce54f37425a9d9765e3474fbd5527a8abc1d935543a44b78b6e376","abstract_canon_sha256":"1a32f5592a5dfd000858364d13576b77222a14c69987ddc78d951fc1058d1e26"},"schema_version":"1.0"},"canonical_sha256":"b2b1563e03e76e2881c172b231d5ce02e9eaf1906c569ad6ccc8be3fda0b8fd5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:53.232813Z","signature_b64":"QcczxjxZ2Tu69myMKmprzcBsouFg5geVKmGY3clxVPtNqJOdqEvp73Vsz7P4Br4ccsRGjbqL9rYmWzZoNl8WBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2b1563e03e76e2881c172b231d5ce02e9eaf1906c569ad6ccc8be3fda0b8fd5","last_reissued_at":"2026-05-18T02:01:53.232249Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:53.232249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.4231","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:01:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RFUgEdLPpxOGcNpdeO+eFB+pchzqOlST0e8/0n7fy6/+/UfAHRE5Ede5IIfGKV6LaXQFfz9HVwWc1gPflGQMBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T03:38:04.251303Z"},"content_sha256":"4d45d059418443fe78daf6ada186ad1e96a859301f6342e41153b5d3f17e0a16","schema_version":"1.0","event_id":"sha256:4d45d059418443fe78daf6ada186ad1e96a859301f6342e41153b5d3f17e0a16"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:WKYVMPQD45XCRAOBOKZDDVOOAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Signatures of minor mergers in Milky Way-like disc kinematics: Ringing revisited","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"\\'Alvaro Villalobos, Brian W. O'Shea, Facundo A. G\\'omez, Ivan Minchev, Mary E. K. Williams","submitted_at":"2011-05-21T08:29:49Z","abstract_excerpt":"By means of N-body simulations we study the response of a galactic disc to a minor merger event. We find that non-self-gravitating, spiral-like features are induced in the thick disc. As we have shown in a previous work, this \"ringing\" also leaves an imprint in velocity space (the u-v plane) in small spatial regions, such as the solar neighbourhood. As the disc relaxes after the event, clumps in the u-v plane get closer with time, allowing us to estimate the time of impact. In addition to confirming the possibility of this diagnostic, here we show that in a more realistic scenario, the in-fall"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.4231","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:01:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vEh8a7cyOViH6lxdIIo6PpAxDTwsmAlWAXGEL9JIma2iMpBukfwHPfgB8z8dsUA/sZVQU/FCTE/JWKiYbq04Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T03:38:04.252005Z"},"content_sha256":"51d0a07781d50832e35055903e2a9095e8b0e986e3fadbed24a20e355a725776","schema_version":"1.0","event_id":"sha256:51d0a07781d50832e35055903e2a9095e8b0e986e3fadbed24a20e355a725776"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WKYVMPQD45XCRAOBOKZDDVOOAL/bundle.json","state_url":"https://pith.science/pith/WKYVMPQD45XCRAOBOKZDDVOOAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WKYVMPQD45XCRAOBOKZDDVOOAL/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-12T03:38:04Z","links":{"resolver":"https://pith.science/pith/WKYVMPQD45XCRAOBOKZDDVOOAL","bundle":"https://pith.science/pith/WKYVMPQD45XCRAOBOKZDDVOOAL/bundle.json","state":"https://pith.science/pith/WKYVMPQD45XCRAOBOKZDDVOOAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WKYVMPQD45XCRAOBOKZDDVOOAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WKYVMPQD45XCRAOBOKZDDVOOAL","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":"1a32f5592a5dfd000858364d13576b77222a14c69987ddc78d951fc1058d1e26","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-21T08:29:49Z","title_canon_sha256":"ef88b50e6bce54f37425a9d9765e3474fbd5527a8abc1d935543a44b78b6e376"},"schema_version":"1.0","source":{"id":"1105.4231","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.4231","created_at":"2026-05-18T02:01:53Z"},{"alias_kind":"arxiv_version","alias_value":"1105.4231v2","created_at":"2026-05-18T02:01:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.4231","created_at":"2026-05-18T02:01:53Z"},{"alias_kind":"pith_short_12","alias_value":"WKYVMPQD45XC","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WKYVMPQD45XCRAOB","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WKYVMPQD","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:51d0a07781d50832e35055903e2a9095e8b0e986e3fadbed24a20e355a725776","target":"graph","created_at":"2026-05-18T02:01:53Z","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"},"paper":{"abstract_excerpt":"By means of N-body simulations we study the response of a galactic disc to a minor merger event. We find that non-self-gravitating, spiral-like features are induced in the thick disc. As we have shown in a previous work, this \"ringing\" also leaves an imprint in velocity space (the u-v plane) in small spatial regions, such as the solar neighbourhood. As the disc relaxes after the event, clumps in the u-v plane get closer with time, allowing us to estimate the time of impact. In addition to confirming the possibility of this diagnostic, here we show that in a more realistic scenario, the in-fall","authors_text":"\\'Alvaro Villalobos, Brian W. O'Shea, Facundo A. G\\'omez, Ivan Minchev, Mary E. K. Williams","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-21T08:29:49Z","title":"Signatures of minor mergers in Milky Way-like disc kinematics: Ringing revisited"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.4231","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":"sha256:4d45d059418443fe78daf6ada186ad1e96a859301f6342e41153b5d3f17e0a16","target":"record","created_at":"2026-05-18T02:01:53Z","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":"1a32f5592a5dfd000858364d13576b77222a14c69987ddc78d951fc1058d1e26","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-21T08:29:49Z","title_canon_sha256":"ef88b50e6bce54f37425a9d9765e3474fbd5527a8abc1d935543a44b78b6e376"},"schema_version":"1.0","source":{"id":"1105.4231","kind":"arxiv","version":2}},"canonical_sha256":"b2b1563e03e76e2881c172b231d5ce02e9eaf1906c569ad6ccc8be3fda0b8fd5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2b1563e03e76e2881c172b231d5ce02e9eaf1906c569ad6ccc8be3fda0b8fd5","first_computed_at":"2026-05-18T02:01:53.232249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:53.232249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QcczxjxZ2Tu69myMKmprzcBsouFg5geVKmGY3clxVPtNqJOdqEvp73Vsz7P4Br4ccsRGjbqL9rYmWzZoNl8WBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:53.232813Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.4231","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d45d059418443fe78daf6ada186ad1e96a859301f6342e41153b5d3f17e0a16","sha256:51d0a07781d50832e35055903e2a9095e8b0e986e3fadbed24a20e355a725776"],"state_sha256":"3defdaa7daab00c339257f5c03f93cf1ad12b897d7a497afbe6e3b9d8a456076"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VnqjdcQopjM/iMgO9XhIEDooGZQvy6BSm3m4yY3ANb8P6gMvwLnXSbcaaYU++NKfC02yEM85Z+cdRhN2xVZKDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T03:38:04.255258Z","bundle_sha256":"0c9f3f7371beb4363ae4d5cf0f1f414b0772724e4d162c008078d729a0a03bf5"}}