{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:GYHWEJY4COQM3MGT75EDEBMFAK","short_pith_number":"pith:GYHWEJY4","canonical_record":{"source":{"id":"2003.13789","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-30T20:14:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"b6e883017daad1afe15727ee0d63e08f50bc322e43bf56e9be1a5e611ead3aa3","abstract_canon_sha256":"7600420a5a6c2702ba8632f1f8241057f2d93a07a206014bb7c1c772330536bb"},"schema_version":"1.0"},"canonical_sha256":"360f62271c13a0cdb0d3ff4832058502b8478a2f230c8c8a1f21bab807b4b371","source":{"kind":"arxiv","id":"2003.13789","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.13789","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"arxiv_version","alias_value":"2003.13789v1","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.13789","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"pith_short_12","alias_value":"GYHWEJY4COQM","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"pith_short_16","alias_value":"GYHWEJY4COQM3MGT","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"pith_short_8","alias_value":"GYHWEJY4","created_at":"2026-07-05T00:51:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:GYHWEJY4COQM3MGT75EDEBMFAK","target":"record","payload":{"canonical_record":{"source":{"id":"2003.13789","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-30T20:14:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"b6e883017daad1afe15727ee0d63e08f50bc322e43bf56e9be1a5e611ead3aa3","abstract_canon_sha256":"7600420a5a6c2702ba8632f1f8241057f2d93a07a206014bb7c1c772330536bb"},"schema_version":"1.0"},"canonical_sha256":"360f62271c13a0cdb0d3ff4832058502b8478a2f230c8c8a1f21bab807b4b371","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:51:45.516139Z","signature_b64":"EXz4ibanPoSQog7zWXu0sg2xe6y54ACCfuveUO46PpXyMk5TECowOAEY9NDqfaqA8TLEujgf9epm8tXTGEPOCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"360f62271c13a0cdb0d3ff4832058502b8478a2f230c8c8a1f21bab807b4b371","last_reissued_at":"2026-07-05T00:51:45.515741Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:51:45.515741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.13789","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:51:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dP7qLJdV6PJECh6Lipzsx9YLnEvGqCgHsV/XU1maaP7E1a2nPgTSEaQEsVkc3grcA5Og+L9PhVI5XIl59TSMAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:43:27.839353Z"},"content_sha256":"5e6f96cf6fce4f9d2fa9ebeccd70512eee934ba328250633ed3d02b7d3cd3571","schema_version":"1.0","event_id":"sha256:5e6f96cf6fce4f9d2fa9ebeccd70512eee934ba328250633ed3d02b7d3cd3571"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:GYHWEJY4COQM3MGT75EDEBMFAK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The erratic path to coalescence of LISA massive black hole binaries in sub-pc resolution simulations of smooth circumnuclear gas disks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Elisa Bortolas, Lucio Mayer, Pedro R. Capelo, Rafael Souza Lima, Thomas R. Quinn","submitted_at":"2020-03-30T20:14:06Z","abstract_excerpt":"We report on high-resolution simulations that explore the orbital decay of massive black hole (MBH) pairs with masses between $10^5$ and $10^7 M_{\\odot}$ embedded in a circumnuclear gas disk (CND). An adiabatic equation of state is adopted, with a range of adiabatic indices, which maintains a smooth flow. Mergers between MBHs in this mass range would be detectable by the upcoming Laser Inteferometer Space Antenna (LISA). The orbital evolution is followed from the CND scale ($100$~pc) down to separations of $0.1$--$0.01$~pc at which a circumbinary disk (CBD) could form. The decay is erratic and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.13789","kind":"arxiv","version":1},"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/2003.13789/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":"2026-07-05T00:51:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xDiLLZc2J3dZz2lEvUt9DvkDpRPZxt0OkKZ4B6QLvDQrVkrkGYZucmquBT40AvxIchmd3+7gK2dkBgUNBE3/CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:43:27.840081Z"},"content_sha256":"3d100208800dad8443374981075e951c88fc6d3168f8f2d3e068f5abb8fb3b4e","schema_version":"1.0","event_id":"sha256:3d100208800dad8443374981075e951c88fc6d3168f8f2d3e068f5abb8fb3b4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GYHWEJY4COQM3MGT75EDEBMFAK/bundle.json","state_url":"https://pith.science/pith/GYHWEJY4COQM3MGT75EDEBMFAK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GYHWEJY4COQM3MGT75EDEBMFAK/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":"2026-08-18T21:43:27Z","links":{"resolver":"https://pith.science/pith/GYHWEJY4COQM3MGT75EDEBMFAK","bundle":"https://pith.science/pith/GYHWEJY4COQM3MGT75EDEBMFAK/bundle.json","state":"https://pith.science/pith/GYHWEJY4COQM3MGT75EDEBMFAK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GYHWEJY4COQM3MGT75EDEBMFAK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GYHWEJY4COQM3MGT75EDEBMFAK","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":"7600420a5a6c2702ba8632f1f8241057f2d93a07a206014bb7c1c772330536bb","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-30T20:14:06Z","title_canon_sha256":"b6e883017daad1afe15727ee0d63e08f50bc322e43bf56e9be1a5e611ead3aa3"},"schema_version":"1.0","source":{"id":"2003.13789","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.13789","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"arxiv_version","alias_value":"2003.13789v1","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.13789","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"pith_short_12","alias_value":"GYHWEJY4COQM","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"pith_short_16","alias_value":"GYHWEJY4COQM3MGT","created_at":"2026-07-05T00:51:45Z"},{"alias_kind":"pith_short_8","alias_value":"GYHWEJY4","created_at":"2026-07-05T00:51:45Z"}],"graph_snapshots":[{"event_id":"sha256:3d100208800dad8443374981075e951c88fc6d3168f8f2d3e068f5abb8fb3b4e","target":"graph","created_at":"2026-07-05T00:51:45Z","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/2003.13789/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on high-resolution simulations that explore the orbital decay of massive black hole (MBH) pairs with masses between $10^5$ and $10^7 M_{\\odot}$ embedded in a circumnuclear gas disk (CND). An adiabatic equation of state is adopted, with a range of adiabatic indices, which maintains a smooth flow. Mergers between MBHs in this mass range would be detectable by the upcoming Laser Inteferometer Space Antenna (LISA). The orbital evolution is followed from the CND scale ($100$~pc) down to separations of $0.1$--$0.01$~pc at which a circumbinary disk (CBD) could form. The decay is erratic and","authors_text":"Elisa Bortolas, Lucio Mayer, Pedro R. Capelo, Rafael Souza Lima, Thomas R. Quinn","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-30T20:14:06Z","title":"The erratic path to coalescence of LISA massive black hole binaries in sub-pc resolution simulations of smooth circumnuclear gas disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.13789","kind":"arxiv","version":1},"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":"sha256:5e6f96cf6fce4f9d2fa9ebeccd70512eee934ba328250633ed3d02b7d3cd3571","target":"record","created_at":"2026-07-05T00:51:45Z","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":"7600420a5a6c2702ba8632f1f8241057f2d93a07a206014bb7c1c772330536bb","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-30T20:14:06Z","title_canon_sha256":"b6e883017daad1afe15727ee0d63e08f50bc322e43bf56e9be1a5e611ead3aa3"},"schema_version":"1.0","source":{"id":"2003.13789","kind":"arxiv","version":1}},"canonical_sha256":"360f62271c13a0cdb0d3ff4832058502b8478a2f230c8c8a1f21bab807b4b371","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"360f62271c13a0cdb0d3ff4832058502b8478a2f230c8c8a1f21bab807b4b371","first_computed_at":"2026-07-05T00:51:45.515741Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:51:45.515741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EXz4ibanPoSQog7zWXu0sg2xe6y54ACCfuveUO46PpXyMk5TECowOAEY9NDqfaqA8TLEujgf9epm8tXTGEPOCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:51:45.516139Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.13789","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e6f96cf6fce4f9d2fa9ebeccd70512eee934ba328250633ed3d02b7d3cd3571","sha256:3d100208800dad8443374981075e951c88fc6d3168f8f2d3e068f5abb8fb3b4e"],"state_sha256":"f2c5fbe0557dbf0b247aeda22af8873e2e07d09215d237614a48a41c27d8c21e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MweSYIPaGdl90vtAaYkE14gEjEfKG5QNHPzulrN0Q5Hbsol0MlO2I8mecNQdY4Zhn7vOYURqHu3LDCmjSgqaDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T21:43:27.846523Z","bundle_sha256":"f4c959c9c5a193b6ba3d7f31d95f9b7e389e76813314eb57302d86d1847438ca"}}