{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:YHWAQZKSXMWWZHAQJSLBTJ7WUA","short_pith_number":"pith:YHWAQZKS","canonical_record":{"source":{"id":"1807.11004","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-29T05:52:44Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b5f9eaba53a11b48f0f2b4ca3bb790dba1533a3a29a0d2925aa9fd7e0b2b0a51","abstract_canon_sha256":"e0321a357e6fb7a1aea49a3d099c3edee9cbb95f731c984dd56e0f3f1ec03067"},"schema_version":"1.0"},"canonical_sha256":"c1ec086552bb2d6c9c104c9619a7f6a02f552e32aa176e62496653176d401586","source":{"kind":"arxiv","id":"1807.11004","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11004","created_at":"2026-05-17T23:59:14Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11004v1","created_at":"2026-05-17T23:59:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11004","created_at":"2026-05-17T23:59:14Z"},{"alias_kind":"pith_short_12","alias_value":"YHWAQZKSXMWW","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YHWAQZKSXMWWZHAQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YHWAQZKS","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:YHWAQZKSXMWWZHAQJSLBTJ7WUA","target":"record","payload":{"canonical_record":{"source":{"id":"1807.11004","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-29T05:52:44Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b5f9eaba53a11b48f0f2b4ca3bb790dba1533a3a29a0d2925aa9fd7e0b2b0a51","abstract_canon_sha256":"e0321a357e6fb7a1aea49a3d099c3edee9cbb95f731c984dd56e0f3f1ec03067"},"schema_version":"1.0"},"canonical_sha256":"c1ec086552bb2d6c9c104c9619a7f6a02f552e32aa176e62496653176d401586","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:14.877092Z","signature_b64":"83iBuoE5eQLZObUZat+nkVUvXEjYG46kHU/Xl4J9K+zQhVEuf7J3n4itDcoYG3ZmrALdW79Qt0LJmV/alcYyBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1ec086552bb2d6c9c104c9619a7f6a02f552e32aa176e62496653176d401586","last_reissued_at":"2026-05-17T23:59:14.876663Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:14.876663Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.11004","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":"2026-05-17T23:59:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BvnCe3l52pU+5c/jGAt3cZu6FEsAp5YLLJhMQ82OuX8QYMkry/lk/o9ZrGtHLIJlG791Y6ioWZW/1YQecVd6Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:10:17.284533Z"},"content_sha256":"9526210357e3c5ae3ec351862c1c754d51fdb462d23b84cc65cd576c51cad9cd","schema_version":"1.0","event_id":"sha256:9526210357e3c5ae3ec351862c1c754d51fdb462d23b84cc65cd576c51cad9cd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:YHWAQZKSXMWWZHAQJSLBTJ7WUA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamical Evolution and Merger Time-scales of LISA Massive Black Hole Binaries in Disk Galaxy Mergers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Fazeel M. Khan, Lucio Mayer, Pedro R. Capelo, Peter Berczik","submitted_at":"2018-07-29T05:52:44Z","abstract_excerpt":"The Laser Interferometer Space Antenna (LISA) will detect gravitational-wave (GW) signals from merging supermassive black holes (BHs) with masses below $10^7$~M$_{\\odot}$. It is thus of paramount importance to understand the orbital dynamics of these relatively light central BHs, which typically reside in disc-dominated galaxies, in order to produce reliable forecasts of merger rates. To this aim, realistic simulations probing BH dynamics in unequal-mass disc galaxy mergers, into and beyond the binary hardening stage, are performed by combining smooth particle hydrodynamics and direct $N$-body"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11004","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":""},"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":"2026-05-17T23:59:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"agOESC0FVkZ+/mqOH3X8b6sOYRhvINJgf8dNDbdnMMsITM+hFEMJdVoUccFgU0y/O2R/hqKZa2CrDwB6b/q8CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:10:17.284927Z"},"content_sha256":"0a63d7cb4d1089ebf29cd321fc100d33e77e17714af04e0ec61b3b180cafd607","schema_version":"1.0","event_id":"sha256:0a63d7cb4d1089ebf29cd321fc100d33e77e17714af04e0ec61b3b180cafd607"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA/bundle.json","state_url":"https://pith.science/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA/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":"2026-05-26T20:10:17Z","links":{"resolver":"https://pith.science/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA","bundle":"https://pith.science/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA/bundle.json","state":"https://pith.science/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YHWAQZKSXMWWZHAQJSLBTJ7WUA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YHWAQZKSXMWWZHAQJSLBTJ7WUA","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":"e0321a357e6fb7a1aea49a3d099c3edee9cbb95f731c984dd56e0f3f1ec03067","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-29T05:52:44Z","title_canon_sha256":"b5f9eaba53a11b48f0f2b4ca3bb790dba1533a3a29a0d2925aa9fd7e0b2b0a51"},"schema_version":"1.0","source":{"id":"1807.11004","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.11004","created_at":"2026-05-17T23:59:14Z"},{"alias_kind":"arxiv_version","alias_value":"1807.11004v1","created_at":"2026-05-17T23:59:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.11004","created_at":"2026-05-17T23:59:14Z"},{"alias_kind":"pith_short_12","alias_value":"YHWAQZKSXMWW","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YHWAQZKSXMWWZHAQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YHWAQZKS","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:0a63d7cb4d1089ebf29cd321fc100d33e77e17714af04e0ec61b3b180cafd607","target":"graph","created_at":"2026-05-17T23:59:14Z","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":"The Laser Interferometer Space Antenna (LISA) will detect gravitational-wave (GW) signals from merging supermassive black holes (BHs) with masses below $10^7$~M$_{\\odot}$. It is thus of paramount importance to understand the orbital dynamics of these relatively light central BHs, which typically reside in disc-dominated galaxies, in order to produce reliable forecasts of merger rates. To this aim, realistic simulations probing BH dynamics in unequal-mass disc galaxy mergers, into and beyond the binary hardening stage, are performed by combining smooth particle hydrodynamics and direct $N$-body","authors_text":"Fazeel M. Khan, Lucio Mayer, Pedro R. Capelo, Peter Berczik","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-29T05:52:44Z","title":"Dynamical Evolution and Merger Time-scales of LISA Massive Black Hole Binaries in Disk Galaxy Mergers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11004","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":"sha256:9526210357e3c5ae3ec351862c1c754d51fdb462d23b84cc65cd576c51cad9cd","target":"record","created_at":"2026-05-17T23:59:14Z","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":"e0321a357e6fb7a1aea49a3d099c3edee9cbb95f731c984dd56e0f3f1ec03067","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-29T05:52:44Z","title_canon_sha256":"b5f9eaba53a11b48f0f2b4ca3bb790dba1533a3a29a0d2925aa9fd7e0b2b0a51"},"schema_version":"1.0","source":{"id":"1807.11004","kind":"arxiv","version":1}},"canonical_sha256":"c1ec086552bb2d6c9c104c9619a7f6a02f552e32aa176e62496653176d401586","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1ec086552bb2d6c9c104c9619a7f6a02f552e32aa176e62496653176d401586","first_computed_at":"2026-05-17T23:59:14.876663Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:14.876663Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"83iBuoE5eQLZObUZat+nkVUvXEjYG46kHU/Xl4J9K+zQhVEuf7J3n4itDcoYG3ZmrALdW79Qt0LJmV/alcYyBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:14.877092Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.11004","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9526210357e3c5ae3ec351862c1c754d51fdb462d23b84cc65cd576c51cad9cd","sha256:0a63d7cb4d1089ebf29cd321fc100d33e77e17714af04e0ec61b3b180cafd607"],"state_sha256":"87e01e74530e58b1906b65d3d292042846529971250f81c5fc676734a72bca5a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sLyTU9m0Wg+vQ5uhESfzY7oSrJvmV5NM7RcqbMAjSPLIw7jdpBuizWsOszIG6pzyRbmCWpB6MqdJtilntPtEAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T20:10:17.288460Z","bundle_sha256":"5781cf62b08d1f528b80782cffef22cd8d5af5c90b10e283434a5da796873ff8"}}