{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:I3YTKJ2H7H3QDIAAEZTGKUVSSQ","short_pith_number":"pith:I3YTKJ2H","canonical_record":{"source":{"id":"1709.00014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:14Z","cross_cats_sorted":[],"title_canon_sha256":"a84b81f294ef793f6f5a8dbf82eda80456158af0dfccad78deca940218131f60","abstract_canon_sha256":"0ce9dbb238db99c2eec2f26ea2b7f7e6160ffe19954db8e7dd3f468ce8af8b31"},"schema_version":"1.0"},"canonical_sha256":"46f1352747f9f701a00026666552b2943eccbb0624a5b921f0a0b3839dc7e4fd","source":{"kind":"arxiv","id":"1709.00014","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00014","created_at":"2026-05-18T00:22:28Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00014v2","created_at":"2026-05-18T00:22:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00014","created_at":"2026-05-18T00:22:28Z"},{"alias_kind":"pith_short_12","alias_value":"I3YTKJ2H7H3Q","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I3YTKJ2H7H3QDIAA","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I3YTKJ2H","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:I3YTKJ2H7H3QDIAAEZTGKUVSSQ","target":"record","payload":{"canonical_record":{"source":{"id":"1709.00014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:14Z","cross_cats_sorted":[],"title_canon_sha256":"a84b81f294ef793f6f5a8dbf82eda80456158af0dfccad78deca940218131f60","abstract_canon_sha256":"0ce9dbb238db99c2eec2f26ea2b7f7e6160ffe19954db8e7dd3f468ce8af8b31"},"schema_version":"1.0"},"canonical_sha256":"46f1352747f9f701a00026666552b2943eccbb0624a5b921f0a0b3839dc7e4fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:28.512969Z","signature_b64":"m188ZebipSS+vqmqrdMvpZ3Xm70PwQGFTCgYTbpYT3Rl9R4OonF0jtI9L8Aj9gIZoivqsFC/3R2lTzVoALxgCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46f1352747f9f701a00026666552b2943eccbb0624a5b921f0a0b3839dc7e4fd","last_reissued_at":"2026-05-18T00:22:28.512099Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:28.512099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.00014","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":"2026-05-18T00:22:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4DRNXAkBvWTDO+u7gOKKDBvZHA+Dz83SwTx7ujeogPikX5GuxZ8OsfZMoV/Z5yLfnsK5fxFnH0zXxvbzzhT7BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T20:30:08.654697Z"},"content_sha256":"10fa9af59b3f27e2e36244222e4c14a8f191eb5b7d471e5b38d8e92391d32566","schema_version":"1.0","event_id":"sha256:10fa9af59b3f27e2e36244222e4c14a8f191eb5b7d471e5b38d8e92391d32566"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:I3YTKJ2H7H3QDIAAEZTGKUVSSQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamics of merging: Post-merger mixing and relaxation of an Illustris galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Anthony M. Young, Jens Hjorth, Liliya L. R. Williams","submitted_at":"2017-08-31T18:00:14Z","abstract_excerpt":"During the merger of two galaxies, the resulting system undergoes violent relaxation and seeks stable equilibrium. However, the details of this evolution are not fully understood. Using Illustris simulation, we probe two physically related processes, mixing and relaxation. Though the two are driven by the same dynamics---global time-varying potential for the energy, and torques caused by asymmetries for angular momentum---we measure them differently. We define mixing as the redistribution of energy and angular momentum between particles of the two merging galaxies. We assess the degree of mixi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00014","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":"2026-05-18T00:22:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sjktXGho70hVA5NvGf/nzL7/U7F/x/mknhFV4LfV91Qi/o15bwWd/FE1+ZgitKh48TAtkxJpo1JZRxRQ5P1+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T20:30:08.655432Z"},"content_sha256":"671986fe50647996595af2f1c627bd87a18d0473f774f7e3c9db0d32a13041e0","schema_version":"1.0","event_id":"sha256:671986fe50647996595af2f1c627bd87a18d0473f774f7e3c9db0d32a13041e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ/bundle.json","state_url":"https://pith.science/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ/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":"2026-06-08T20:30:08Z","links":{"resolver":"https://pith.science/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ","bundle":"https://pith.science/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ/bundle.json","state":"https://pith.science/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I3YTKJ2H7H3QDIAAEZTGKUVSSQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:I3YTKJ2H7H3QDIAAEZTGKUVSSQ","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":"0ce9dbb238db99c2eec2f26ea2b7f7e6160ffe19954db8e7dd3f468ce8af8b31","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:14Z","title_canon_sha256":"a84b81f294ef793f6f5a8dbf82eda80456158af0dfccad78deca940218131f60"},"schema_version":"1.0","source":{"id":"1709.00014","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00014","created_at":"2026-05-18T00:22:28Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00014v2","created_at":"2026-05-18T00:22:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00014","created_at":"2026-05-18T00:22:28Z"},{"alias_kind":"pith_short_12","alias_value":"I3YTKJ2H7H3Q","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I3YTKJ2H7H3QDIAA","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I3YTKJ2H","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:671986fe50647996595af2f1c627bd87a18d0473f774f7e3c9db0d32a13041e0","target":"graph","created_at":"2026-05-18T00:22:28Z","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":"During the merger of two galaxies, the resulting system undergoes violent relaxation and seeks stable equilibrium. However, the details of this evolution are not fully understood. Using Illustris simulation, we probe two physically related processes, mixing and relaxation. Though the two are driven by the same dynamics---global time-varying potential for the energy, and torques caused by asymmetries for angular momentum---we measure them differently. We define mixing as the redistribution of energy and angular momentum between particles of the two merging galaxies. We assess the degree of mixi","authors_text":"Anthony M. Young, Jens Hjorth, Liliya L. R. Williams","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:14Z","title":"Dynamics of merging: Post-merger mixing and relaxation of an Illustris galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00014","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":"sha256:10fa9af59b3f27e2e36244222e4c14a8f191eb5b7d471e5b38d8e92391d32566","target":"record","created_at":"2026-05-18T00:22:28Z","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":"0ce9dbb238db99c2eec2f26ea2b7f7e6160ffe19954db8e7dd3f468ce8af8b31","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:14Z","title_canon_sha256":"a84b81f294ef793f6f5a8dbf82eda80456158af0dfccad78deca940218131f60"},"schema_version":"1.0","source":{"id":"1709.00014","kind":"arxiv","version":2}},"canonical_sha256":"46f1352747f9f701a00026666552b2943eccbb0624a5b921f0a0b3839dc7e4fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"46f1352747f9f701a00026666552b2943eccbb0624a5b921f0a0b3839dc7e4fd","first_computed_at":"2026-05-18T00:22:28.512099Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:22:28.512099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m188ZebipSS+vqmqrdMvpZ3Xm70PwQGFTCgYTbpYT3Rl9R4OonF0jtI9L8Aj9gIZoivqsFC/3R2lTzVoALxgCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:22:28.512969Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.00014","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10fa9af59b3f27e2e36244222e4c14a8f191eb5b7d471e5b38d8e92391d32566","sha256:671986fe50647996595af2f1c627bd87a18d0473f774f7e3c9db0d32a13041e0"],"state_sha256":"11c7a180009f233b1f0c3c67040f3a13f06b9fd2a66bcde583145d077aedd4e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KNUi8uh6bhk4EmxpnnOebqC1Vv+RWjWRIfNuF5918sRajVhWpCeXWQSN9LrNwgg2VeIAzhEm8bvy2al5RxQ8CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T20:30:08.659420Z","bundle_sha256":"cd64ea4603701d79bc0c8857ab1af2b3107f26a665994e3bf7e6cf1560841356"}}