{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:BTDIKENFYHTCBXTL3MYJMS4IT6","short_pith_number":"pith:BTDIKENF","canonical_record":{"source":{"id":"1207.0813","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-03T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"294c5b598338b6f401ca52edce8121326b4719d9ac068e3dc0a045a702e87b1e","abstract_canon_sha256":"5e23fc1ad35f64ae472a1de9adbc0934bb54d7ca0e7ace966c36ad7a606950c5"},"schema_version":"1.0"},"canonical_sha256":"0cc68511a5c1e620de6bdb30964b889fb34b74b8218e7e10e1ec5ddf9e1007a6","source":{"kind":"arxiv","id":"1207.0813","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0813","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0813v1","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0813","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"pith_short_12","alias_value":"BTDIKENFYHTC","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BTDIKENFYHTCBXTL","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BTDIKENF","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:BTDIKENFYHTCBXTL3MYJMS4IT6","target":"record","payload":{"canonical_record":{"source":{"id":"1207.0813","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-03T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"294c5b598338b6f401ca52edce8121326b4719d9ac068e3dc0a045a702e87b1e","abstract_canon_sha256":"5e23fc1ad35f64ae472a1de9adbc0934bb54d7ca0e7ace966c36ad7a606950c5"},"schema_version":"1.0"},"canonical_sha256":"0cc68511a5c1e620de6bdb30964b889fb34b74b8218e7e10e1ec5ddf9e1007a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:35.180284Z","signature_b64":"j8L0jFRveYNq7D0Kyt4l/gJwwh3D8AY5mPVCzI+4FjbqcfQo+gvOSyABLMw6ZieBvDOS6RQywlF4Q/wquD8JAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cc68511a5c1e620de6bdb30964b889fb34b74b8218e7e10e1ec5ddf9e1007a6","last_reissued_at":"2026-05-18T01:56:35.179883Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:35.179883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.0813","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":"2026-05-18T01:56:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"//zg3pZA0Wdsmz9wrZXa47ouid6ll9gJMzVjIDtODuT/uW2N/SDV3uit5HdyJLLQrNloM/CeCNVmtygO3RbzCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:26:35.403941Z"},"content_sha256":"1c32d55d82365391594453fab7cc6b3aab6cad3606755a8bcc68e3ffbf9ba30e","schema_version":"1.0","event_id":"sha256:1c32d55d82365391594453fab7cc6b3aab6cad3606755a8bcc68e3ffbf9ba30e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:BTDIKENFYHTCBXTL3MYJMS4IT6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search of sub-parsec massive binary black holes through line diagnosis II","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"C. Montuori, F. Haardt, M. Colpi, M. Dotti, R. Decarli","submitted_at":"2012-07-03T20:00:03Z","abstract_excerpt":"Massive black hole binaries at sub-parsec separations may display in their spectra anomalously small flux ratios between the MgII and CIV broad emission lines, i.e. F_MgII/F_CIV <~ 0.1, due to the erosion of the broad line region around the active, secondary black hole, by the tidal field of the primary. In Paper I by Montuori et al. (2011), we focussed on broad lines emitted by gas bound to the lighter accreting member of a binary when the binary is at the center of a hollow density region (the gap) inside a circum-binary disc. The main aim of this new study is at exploring the potential cont"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0813","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":"2026-05-18T01:56:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Le2CksX4yc69wbmsF9EwAGSPnm0ZIguafcDie0FfJQqio2eVS2C6AFKI0vPUlPbhB4POXLwf4taBGsfo/hX9CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:26:35.404286Z"},"content_sha256":"edc63f4180f6444dc13c99941bd050406ee5035a8600f7ca95a6493734cf0c27","schema_version":"1.0","event_id":"sha256:edc63f4180f6444dc13c99941bd050406ee5035a8600f7ca95a6493734cf0c27"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BTDIKENFYHTCBXTL3MYJMS4IT6/bundle.json","state_url":"https://pith.science/pith/BTDIKENFYHTCBXTL3MYJMS4IT6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BTDIKENFYHTCBXTL3MYJMS4IT6/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":"2026-06-01T03:26:35Z","links":{"resolver":"https://pith.science/pith/BTDIKENFYHTCBXTL3MYJMS4IT6","bundle":"https://pith.science/pith/BTDIKENFYHTCBXTL3MYJMS4IT6/bundle.json","state":"https://pith.science/pith/BTDIKENFYHTCBXTL3MYJMS4IT6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BTDIKENFYHTCBXTL3MYJMS4IT6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BTDIKENFYHTCBXTL3MYJMS4IT6","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":"5e23fc1ad35f64ae472a1de9adbc0934bb54d7ca0e7ace966c36ad7a606950c5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-03T20:00:03Z","title_canon_sha256":"294c5b598338b6f401ca52edce8121326b4719d9ac068e3dc0a045a702e87b1e"},"schema_version":"1.0","source":{"id":"1207.0813","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0813","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0813v1","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0813","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"pith_short_12","alias_value":"BTDIKENFYHTC","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BTDIKENFYHTCBXTL","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BTDIKENF","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:edc63f4180f6444dc13c99941bd050406ee5035a8600f7ca95a6493734cf0c27","target":"graph","created_at":"2026-05-18T01:56:35Z","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"},"paper":{"abstract_excerpt":"Massive black hole binaries at sub-parsec separations may display in their spectra anomalously small flux ratios between the MgII and CIV broad emission lines, i.e. F_MgII/F_CIV <~ 0.1, due to the erosion of the broad line region around the active, secondary black hole, by the tidal field of the primary. In Paper I by Montuori et al. (2011), we focussed on broad lines emitted by gas bound to the lighter accreting member of a binary when the binary is at the center of a hollow density region (the gap) inside a circum-binary disc. The main aim of this new study is at exploring the potential cont","authors_text":"C. Montuori, F. Haardt, M. Colpi, M. Dotti, R. Decarli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-03T20:00:03Z","title":"Search of sub-parsec massive binary black holes through line diagnosis II"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0813","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":"sha256:1c32d55d82365391594453fab7cc6b3aab6cad3606755a8bcc68e3ffbf9ba30e","target":"record","created_at":"2026-05-18T01:56:35Z","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":"5e23fc1ad35f64ae472a1de9adbc0934bb54d7ca0e7ace966c36ad7a606950c5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-03T20:00:03Z","title_canon_sha256":"294c5b598338b6f401ca52edce8121326b4719d9ac068e3dc0a045a702e87b1e"},"schema_version":"1.0","source":{"id":"1207.0813","kind":"arxiv","version":1}},"canonical_sha256":"0cc68511a5c1e620de6bdb30964b889fb34b74b8218e7e10e1ec5ddf9e1007a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cc68511a5c1e620de6bdb30964b889fb34b74b8218e7e10e1ec5ddf9e1007a6","first_computed_at":"2026-05-18T01:56:35.179883Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:35.179883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j8L0jFRveYNq7D0Kyt4l/gJwwh3D8AY5mPVCzI+4FjbqcfQo+gvOSyABLMw6ZieBvDOS6RQywlF4Q/wquD8JAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:35.180284Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.0813","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c32d55d82365391594453fab7cc6b3aab6cad3606755a8bcc68e3ffbf9ba30e","sha256:edc63f4180f6444dc13c99941bd050406ee5035a8600f7ca95a6493734cf0c27"],"state_sha256":"774882b6f749f51b0788e4496467ea99636db69a40c124376496035783b82f6c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wulRvOlf0TzQenQtCTNH4VZE47TgoDcJygEpGYdKe3zLr3Vt0+9UvS6PJtAYPEZu/WBUncmEnyae2RWzy36VAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T03:26:35.406299Z","bundle_sha256":"3965bbbebd6da668fa11e541106ce2f27bb1616d2a3e9ba0b72e540a22c21e2f"}}