{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:J6UP4AHCKK54VK7FRPB7YEF5HG","short_pith_number":"pith:J6UP4AHC","canonical_record":{"source":{"id":"1205.6475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-05-29T20:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"a5fdbb16a786c1535205888a1ad324d78508700bb86db89593889bb170190154","abstract_canon_sha256":"ac8fff26439dd7f55245f7567a973261869cd59c36b6282956970f2040021347"},"schema_version":"1.0"},"canonical_sha256":"4fa8fe00e252bbcaabe58bc3fc10bd3993be96b93c4b8f60023fc85d73984f16","source":{"kind":"arxiv","id":"1205.6475","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6475","created_at":"2026-05-18T01:57:15Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6475v2","created_at":"2026-05-18T01:57:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6475","created_at":"2026-05-18T01:57:15Z"},{"alias_kind":"pith_short_12","alias_value":"J6UP4AHCKK54","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"J6UP4AHCKK54VK7F","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"J6UP4AHC","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:J6UP4AHCKK54VK7FRPB7YEF5HG","target":"record","payload":{"canonical_record":{"source":{"id":"1205.6475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-05-29T20:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"a5fdbb16a786c1535205888a1ad324d78508700bb86db89593889bb170190154","abstract_canon_sha256":"ac8fff26439dd7f55245f7567a973261869cd59c36b6282956970f2040021347"},"schema_version":"1.0"},"canonical_sha256":"4fa8fe00e252bbcaabe58bc3fc10bd3993be96b93c4b8f60023fc85d73984f16","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:15.858841Z","signature_b64":"wInarFjvce4nCjcwDTEhB4Cbqb4Y7HRSQ5HChVpisWc/PtNb78gTIEbQwjG63cM9wu0MYrbQuOxdjHIy774fAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4fa8fe00e252bbcaabe58bc3fc10bd3993be96b93c4b8f60023fc85d73984f16","last_reissued_at":"2026-05-18T01:57:15.858237Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:15.858237Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.6475","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":"2026-05-18T01:57:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KGfbYW54iNJ4yNjLxI5eUTk4lIHWqYtWg/+WwB3Cs6Qe+UaUf6tWDwZiSUadOMt3NN1hUp3tCt7eZsCMd1N0DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:40:08.692098Z"},"content_sha256":"89480ffec12d9d005da3bb2bfa41d6889116fcdcf6b8b6abda6429841daf37d0","schema_version":"1.0","event_id":"sha256:89480ffec12d9d005da3bb2bfa41d6889116fcdcf6b8b6abda6429841daf37d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:J6UP4AHCKK54VK7FRPB7YEF5HG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radial Migration Does Little for Galactic Disc Thickening","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. C. Quillen, A. Siebert, B. Famaey, I. Minchev, M. Martig, W. Dehnen","submitted_at":"2012-05-29T20:00:02Z","abstract_excerpt":"Non-axisymmetric components, such as spirals and central bars, play a major role in shaping galactic discs. An important aspect of the disc secular evolution driven by these perturbers is the radial migration of stars. It has been suggested recently that migration can populate a thick-disc component from inner-disc stars with high vertical energies. Since this has never been demonstrated in simulations, we study in detail the effect of radial migration on the disc velocity dispersion and disc thickness, by separating simulated stars into migrators and non-migrators. We apply this method to thr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6475","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":"2026-05-18T01:57:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zgzRuyOJU59pmMwQLtB1+eQ9HC/XyPo1ufMzYrZl1gegTGxZxPYdIL70t9cIoFHMpBRVfgNZdDPSJcJw6N6yBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:40:08.692776Z"},"content_sha256":"e11920c063b695562fcb62808409285db59475b6ab49cfed45a963f6559dab64","schema_version":"1.0","event_id":"sha256:e11920c063b695562fcb62808409285db59475b6ab49cfed45a963f6559dab64"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J6UP4AHCKK54VK7FRPB7YEF5HG/bundle.json","state_url":"https://pith.science/pith/J6UP4AHCKK54VK7FRPB7YEF5HG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J6UP4AHCKK54VK7FRPB7YEF5HG/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":"2026-05-30T14:40:08Z","links":{"resolver":"https://pith.science/pith/J6UP4AHCKK54VK7FRPB7YEF5HG","bundle":"https://pith.science/pith/J6UP4AHCKK54VK7FRPB7YEF5HG/bundle.json","state":"https://pith.science/pith/J6UP4AHCKK54VK7FRPB7YEF5HG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J6UP4AHCKK54VK7FRPB7YEF5HG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:J6UP4AHCKK54VK7FRPB7YEF5HG","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":"ac8fff26439dd7f55245f7567a973261869cd59c36b6282956970f2040021347","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-05-29T20:00:02Z","title_canon_sha256":"a5fdbb16a786c1535205888a1ad324d78508700bb86db89593889bb170190154"},"schema_version":"1.0","source":{"id":"1205.6475","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6475","created_at":"2026-05-18T01:57:15Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6475v2","created_at":"2026-05-18T01:57:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6475","created_at":"2026-05-18T01:57:15Z"},{"alias_kind":"pith_short_12","alias_value":"J6UP4AHCKK54","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"J6UP4AHCKK54VK7F","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"J6UP4AHC","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:e11920c063b695562fcb62808409285db59475b6ab49cfed45a963f6559dab64","target":"graph","created_at":"2026-05-18T01:57:15Z","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":"Non-axisymmetric components, such as spirals and central bars, play a major role in shaping galactic discs. An important aspect of the disc secular evolution driven by these perturbers is the radial migration of stars. It has been suggested recently that migration can populate a thick-disc component from inner-disc stars with high vertical energies. Since this has never been demonstrated in simulations, we study in detail the effect of radial migration on the disc velocity dispersion and disc thickness, by separating simulated stars into migrators and non-migrators. We apply this method to thr","authors_text":"A. C. Quillen, A. Siebert, B. Famaey, I. Minchev, M. Martig, W. Dehnen","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-05-29T20:00:02Z","title":"Radial Migration Does Little for Galactic Disc Thickening"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6475","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":"sha256:89480ffec12d9d005da3bb2bfa41d6889116fcdcf6b8b6abda6429841daf37d0","target":"record","created_at":"2026-05-18T01:57:15Z","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":"ac8fff26439dd7f55245f7567a973261869cd59c36b6282956970f2040021347","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-05-29T20:00:02Z","title_canon_sha256":"a5fdbb16a786c1535205888a1ad324d78508700bb86db89593889bb170190154"},"schema_version":"1.0","source":{"id":"1205.6475","kind":"arxiv","version":2}},"canonical_sha256":"4fa8fe00e252bbcaabe58bc3fc10bd3993be96b93c4b8f60023fc85d73984f16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4fa8fe00e252bbcaabe58bc3fc10bd3993be96b93c4b8f60023fc85d73984f16","first_computed_at":"2026-05-18T01:57:15.858237Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:15.858237Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wInarFjvce4nCjcwDTEhB4Cbqb4Y7HRSQ5HChVpisWc/PtNb78gTIEbQwjG63cM9wu0MYrbQuOxdjHIy774fAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:15.858841Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.6475","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89480ffec12d9d005da3bb2bfa41d6889116fcdcf6b8b6abda6429841daf37d0","sha256:e11920c063b695562fcb62808409285db59475b6ab49cfed45a963f6559dab64"],"state_sha256":"f483585fc2ed56d02e30ecfd1609b6765294c1746e6dc3dab1024760adcac2b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FMpzyKXKeakHktLx4oXGRO7Tm8E6nlB7SyMDCuipwp/vMz0DSOec/0zMnv1lXZ92iOFo0lxzFWVF/KrWm5AyAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T14:40:08.696155Z","bundle_sha256":"3258745d25691f8342fd0e8d8e7b0dd819f5addd285c71a59c0b35894894f517"}}