{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2SOKMLR5UYBLMEFPLO6YLGHSQ2","short_pith_number":"pith:2SOKMLR5","canonical_record":{"source":{"id":"2001.04472","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-01-13T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"f2dacc136e30cdc84f6ac30b6e3e2ac9c7a679091836249ec93ea8e046d405a0","abstract_canon_sha256":"bc7221bac25df75717979c36ef65135c466090a4d6e371a49e7d6a83f9631f4a"},"schema_version":"1.0"},"canonical_sha256":"d49ca62e3da602b610af5bbd8598f286ac981880226641cb55846cfb5d74f6ca","source":{"kind":"arxiv","id":"2001.04472","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.04472","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"arxiv_version","alias_value":"2001.04472v2","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.04472","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"pith_short_12","alias_value":"2SOKMLR5UYBL","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"pith_short_16","alias_value":"2SOKMLR5UYBLMEFP","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"pith_short_8","alias_value":"2SOKMLR5","created_at":"2026-07-05T00:41:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2SOKMLR5UYBLMEFPLO6YLGHSQ2","target":"record","payload":{"canonical_record":{"source":{"id":"2001.04472","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-01-13T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"f2dacc136e30cdc84f6ac30b6e3e2ac9c7a679091836249ec93ea8e046d405a0","abstract_canon_sha256":"bc7221bac25df75717979c36ef65135c466090a4d6e371a49e7d6a83f9631f4a"},"schema_version":"1.0"},"canonical_sha256":"d49ca62e3da602b610af5bbd8598f286ac981880226641cb55846cfb5d74f6ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:41:13.625399Z","signature_b64":"6I3ZjjbCN+UydjLb5ODUfvMfpchvQg/ws9ay3i251Pkg33PUWjBhQG9ina7ZtFsJmQ5uqhdJDC6yWoPhnqnyDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d49ca62e3da602b610af5bbd8598f286ac981880226641cb55846cfb5d74f6ca","last_reissued_at":"2026-07-05T00:41:13.624995Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:41:13.624995Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.04472","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":"2026-07-05T00:41:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PHFdTDqid0YiaIND7ZmcOMp1pc66y0QPSRfjQrF8ktiZE+ILRs1vexYp6X1aK5F0wvKobI80QCqAqH79fSsKDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T18:16:43.359780Z"},"content_sha256":"9761889d9cf04ab25d0234422ac1a55bc937030c731fb4c02216f6ad0233341a","schema_version":"1.0","event_id":"sha256:9761889d9cf04ab25d0234422ac1a55bc937030c731fb4c02216f6ad0233341a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2SOKMLR5UYBLMEFPLO6YLGHSQ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interacting galaxies in the IllustrisTNG simulations -- II: Star formation in the post-merger stage","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"David R. Patton, Hayman Gosain, Maan H. Hani, Paul Torrey, Sara L. Ellison","submitted_at":"2020-01-13T19:00:00Z","abstract_excerpt":"Galaxy mergers are a major evolutionary transformation whose effects are borne out by a plethora of observations and numerical simulations. However, most previous simulations have used idealised, isolated, binary mergers and there has not been significant progress on studying statistical samples of galaxy mergers in large cosmological simulations. We present a sample of 27,691 post-merger (PM) galaxies ($0\\le z \\le 1$) identified from IllustrisTNG: a cosmological, large box, magneto-hydrodynamical simulation suite. The PM sample spans a wide range of merger and galaxy properties ($M_\\star$, $\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.04472","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2001.04472/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:41:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BpCsRILkTvy59v8hwjztZTZbsQ95WGesAgE0ikvNR55giqh90zop4v2rHpOt8V95EPZ8Ztmt8Wqpjt600ZVJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T18:16:43.360411Z"},"content_sha256":"06fe1c9ddae33a22c838ae7776c933860d59e6c885cd73f005c61abe09661df7","schema_version":"1.0","event_id":"sha256:06fe1c9ddae33a22c838ae7776c933860d59e6c885cd73f005c61abe09661df7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2/bundle.json","state_url":"https://pith.science/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2/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":"2026-08-01T18:16:43Z","links":{"resolver":"https://pith.science/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2","bundle":"https://pith.science/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2/bundle.json","state":"https://pith.science/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2SOKMLR5UYBLMEFPLO6YLGHSQ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2SOKMLR5UYBLMEFPLO6YLGHSQ2","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":"bc7221bac25df75717979c36ef65135c466090a4d6e371a49e7d6a83f9631f4a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-01-13T19:00:00Z","title_canon_sha256":"f2dacc136e30cdc84f6ac30b6e3e2ac9c7a679091836249ec93ea8e046d405a0"},"schema_version":"1.0","source":{"id":"2001.04472","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.04472","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"arxiv_version","alias_value":"2001.04472v2","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.04472","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"pith_short_12","alias_value":"2SOKMLR5UYBL","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"pith_short_16","alias_value":"2SOKMLR5UYBLMEFP","created_at":"2026-07-05T00:41:13Z"},{"alias_kind":"pith_short_8","alias_value":"2SOKMLR5","created_at":"2026-07-05T00:41:13Z"}],"graph_snapshots":[{"event_id":"sha256:06fe1c9ddae33a22c838ae7776c933860d59e6c885cd73f005c61abe09661df7","target":"graph","created_at":"2026-07-05T00:41:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2001.04472/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Galaxy mergers are a major evolutionary transformation whose effects are borne out by a plethora of observations and numerical simulations. However, most previous simulations have used idealised, isolated, binary mergers and there has not been significant progress on studying statistical samples of galaxy mergers in large cosmological simulations. We present a sample of 27,691 post-merger (PM) galaxies ($0\\le z \\le 1$) identified from IllustrisTNG: a cosmological, large box, magneto-hydrodynamical simulation suite. The PM sample spans a wide range of merger and galaxy properties ($M_\\star$, $\\","authors_text":"David R. Patton, Hayman Gosain, Maan H. Hani, Paul Torrey, Sara L. Ellison","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-01-13T19:00:00Z","title":"Interacting galaxies in the IllustrisTNG simulations -- II: Star formation in the post-merger stage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.04472","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":"sha256:9761889d9cf04ab25d0234422ac1a55bc937030c731fb4c02216f6ad0233341a","target":"record","created_at":"2026-07-05T00:41:13Z","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":"bc7221bac25df75717979c36ef65135c466090a4d6e371a49e7d6a83f9631f4a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-01-13T19:00:00Z","title_canon_sha256":"f2dacc136e30cdc84f6ac30b6e3e2ac9c7a679091836249ec93ea8e046d405a0"},"schema_version":"1.0","source":{"id":"2001.04472","kind":"arxiv","version":2}},"canonical_sha256":"d49ca62e3da602b610af5bbd8598f286ac981880226641cb55846cfb5d74f6ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d49ca62e3da602b610af5bbd8598f286ac981880226641cb55846cfb5d74f6ca","first_computed_at":"2026-07-05T00:41:13.624995Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:41:13.624995Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6I3ZjjbCN+UydjLb5ODUfvMfpchvQg/ws9ay3i251Pkg33PUWjBhQG9ina7ZtFsJmQ5uqhdJDC6yWoPhnqnyDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:41:13.625399Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.04472","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9761889d9cf04ab25d0234422ac1a55bc937030c731fb4c02216f6ad0233341a","sha256:06fe1c9ddae33a22c838ae7776c933860d59e6c885cd73f005c61abe09661df7"],"state_sha256":"c20ba1a3184f7f7e5c1b27948cd8f06a2fffed719a329bc9cd62eca80b5e528e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BBLH/YGm5QM21vX+mbl/SMlZX4JFHfy+JAaL2z3CM8TJVWy10g2n8DKagp9rJ1tnpoB8L3u4K3xzoO+jHCTkCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T18:16:43.365599Z","bundle_sha256":"7e2923c7f1d1ba07ea8d17b01389c55e1f0ec0188acc4624750fa429ab1aec42"}}