{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Z4FWRLDQ4LRFM655RNVKJPVKN7","short_pith_number":"pith:Z4FWRLDQ","canonical_record":{"source":{"id":"2101.01729","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-01-05T19:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"5200a11c5e3a0bf57f989113b1e615c4f11ee5579e683c184a538dd27e097b5f","abstract_canon_sha256":"cea3b6ee41fb504873bb349d3d36df847a8f04cfc24d43b7c5008f040e9340b8"},"schema_version":"1.0"},"canonical_sha256":"cf0b68ac70e2e2567bbd8b6aa4beaa6fea0bc0147fe1228ed1c8a8affa2327c5","source":{"kind":"arxiv","id":"2101.01729","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.01729","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"arxiv_version","alias_value":"2101.01729v3","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.01729","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"pith_short_12","alias_value":"Z4FWRLDQ4LRF","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"pith_short_16","alias_value":"Z4FWRLDQ4LRFM655","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"pith_short_8","alias_value":"Z4FWRLDQ","created_at":"2026-07-05T07:25:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Z4FWRLDQ4LRFM655RNVKJPVKN7","target":"record","payload":{"canonical_record":{"source":{"id":"2101.01729","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-01-05T19:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"5200a11c5e3a0bf57f989113b1e615c4f11ee5579e683c184a538dd27e097b5f","abstract_canon_sha256":"cea3b6ee41fb504873bb349d3d36df847a8f04cfc24d43b7c5008f040e9340b8"},"schema_version":"1.0"},"canonical_sha256":"cf0b68ac70e2e2567bbd8b6aa4beaa6fea0bc0147fe1228ed1c8a8affa2327c5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:25:35.830246Z","signature_b64":"epsICtpSyPoWA0+Rl2cOVBqVwgPpkYF7kZrxDfGh8VsicfunaaiHxtAOlewzSiG/tWdLnQfli0qMtRMF6NIjCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf0b68ac70e2e2567bbd8b6aa4beaa6fea0bc0147fe1228ed1c8a8affa2327c5","last_reissued_at":"2026-07-05T07:25:35.829747Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:25:35.829747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.01729","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:25:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+dHCqv8SHrrn09sHc9D4X0CW8fB8X575SB94J8KQ2IS8TMR32YyqhcvQq8WpPI51uUSB0pLjHi8CYvjlcutQAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T09:23:59.358314Z"},"content_sha256":"8d4ff2e402e1753a534fe5b117d103b1f099937895fb41e3c27e64c532f86a25","schema_version":"1.0","event_id":"sha256:8d4ff2e402e1753a534fe5b117d103b1f099937895fb41e3c27e64c532f86a25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Z4FWRLDQ4LRFM655RNVKJPVKN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Connection between Mergers and AGN Activity in Simulated and Observed Massive Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Benjamin P. Moster, Dale D. Kocevski, David J. Rosario, Desika Narayanan, Ena Choi, Gregory F. Snyder, Jeremiah P. Ostriker, Michaela Hirschmann, Rachel S. Somerville, Ray S. Sharma, Thorsten Naab","submitted_at":"2021-01-05T19:00:09Z","abstract_excerpt":"We analyze a suite of $30$ high resolution zoom-in cosmological hydrodynamic simulations of massive galaxies with stellar masses $M_{\\ast} > 10^{10.9} M_\\odot$, with the goal of better understanding merger activity in AGN, AGN activity in merging systems, SMBH growth during mergers, and the role of gas content. Using the radiative transfer code \\textsc{Powderday}, we generate HST-WFC3 F160W synthetic observations of redshift $0.5 < z < 3$ central galaxies, add noise properties similar to the CANDELS survey, and measure morphological properties from the synthetic images using commonly adopted n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.01729","kind":"arxiv","version":3},"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/2101.01729/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":"2026-07-05T07:25:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vco5QJfazoKUD6dZr0gOCBchzRf6n5GppwH8yYtHa1+ctrEwgwCDKzGa2WgDmR+cTsmVl76PJlIrmy/kA7T5Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T09:23:59.358951Z"},"content_sha256":"11b4bc8b23543a058a9f2cdb3a6ab354db4c22b42fb7360dbcd7bea327af3090","schema_version":"1.0","event_id":"sha256:11b4bc8b23543a058a9f2cdb3a6ab354db4c22b42fb7360dbcd7bea327af3090"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7/bundle.json","state_url":"https://pith.science/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7/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":"2026-08-11T09:23:59Z","links":{"resolver":"https://pith.science/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7","bundle":"https://pith.science/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7/bundle.json","state":"https://pith.science/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4FWRLDQ4LRFM655RNVKJPVKN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Z4FWRLDQ4LRFM655RNVKJPVKN7","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":"cea3b6ee41fb504873bb349d3d36df847a8f04cfc24d43b7c5008f040e9340b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-01-05T19:00:09Z","title_canon_sha256":"5200a11c5e3a0bf57f989113b1e615c4f11ee5579e683c184a538dd27e097b5f"},"schema_version":"1.0","source":{"id":"2101.01729","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.01729","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"arxiv_version","alias_value":"2101.01729v3","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.01729","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"pith_short_12","alias_value":"Z4FWRLDQ4LRF","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"pith_short_16","alias_value":"Z4FWRLDQ4LRFM655","created_at":"2026-07-05T07:25:35Z"},{"alias_kind":"pith_short_8","alias_value":"Z4FWRLDQ","created_at":"2026-07-05T07:25:35Z"}],"graph_snapshots":[{"event_id":"sha256:11b4bc8b23543a058a9f2cdb3a6ab354db4c22b42fb7360dbcd7bea327af3090","target":"graph","created_at":"2026-07-05T07:25:35Z","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/2101.01729/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze a suite of $30$ high resolution zoom-in cosmological hydrodynamic simulations of massive galaxies with stellar masses $M_{\\ast} > 10^{10.9} M_\\odot$, with the goal of better understanding merger activity in AGN, AGN activity in merging systems, SMBH growth during mergers, and the role of gas content. Using the radiative transfer code \\textsc{Powderday}, we generate HST-WFC3 F160W synthetic observations of redshift $0.5 < z < 3$ central galaxies, add noise properties similar to the CANDELS survey, and measure morphological properties from the synthetic images using commonly adopted n","authors_text":"Benjamin P. Moster, Dale D. Kocevski, David J. Rosario, Desika Narayanan, Ena Choi, Gregory F. Snyder, Jeremiah P. Ostriker, Michaela Hirschmann, Rachel S. Somerville, Ray S. Sharma, Thorsten Naab","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-01-05T19:00:09Z","title":"The Connection between Mergers and AGN Activity in Simulated and Observed Massive Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.01729","kind":"arxiv","version":3},"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":"sha256:8d4ff2e402e1753a534fe5b117d103b1f099937895fb41e3c27e64c532f86a25","target":"record","created_at":"2026-07-05T07:25:35Z","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":"cea3b6ee41fb504873bb349d3d36df847a8f04cfc24d43b7c5008f040e9340b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-01-05T19:00:09Z","title_canon_sha256":"5200a11c5e3a0bf57f989113b1e615c4f11ee5579e683c184a538dd27e097b5f"},"schema_version":"1.0","source":{"id":"2101.01729","kind":"arxiv","version":3}},"canonical_sha256":"cf0b68ac70e2e2567bbd8b6aa4beaa6fea0bc0147fe1228ed1c8a8affa2327c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf0b68ac70e2e2567bbd8b6aa4beaa6fea0bc0147fe1228ed1c8a8affa2327c5","first_computed_at":"2026-07-05T07:25:35.829747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:25:35.829747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"epsICtpSyPoWA0+Rl2cOVBqVwgPpkYF7kZrxDfGh8VsicfunaaiHxtAOlewzSiG/tWdLnQfli0qMtRMF6NIjCw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:25:35.830246Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.01729","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d4ff2e402e1753a534fe5b117d103b1f099937895fb41e3c27e64c532f86a25","sha256:11b4bc8b23543a058a9f2cdb3a6ab354db4c22b42fb7360dbcd7bea327af3090"],"state_sha256":"edf5943b05a8471d2e1ab5fe328e9dd66efa9a63801d3d22352a46ceb40cf8e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zhgEEa/OMB5xSjwYqbao13X7eAq0Z6HQJTN43GV56/m5R9Btgrcyei3Jd4ZhhkpeqEUV91Qi/YbvCJUZt1sPCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T09:23:59.363665Z","bundle_sha256":"2bfbaae2798afd34c8bff3303d0ecfdf40ef2053317c3849b72894a806601159"}}