{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:JDV5HYVSSXJABLU76OLP5MPHJU","short_pith_number":"pith:JDV5HYVS","schema_version":"1.0","canonical_sha256":"48ebd3e2b295d200ae9ff396feb1e74d2c637e892e7b7cc28a6536f64fab42c2","source":{"kind":"arxiv","id":"2006.14122","version":1},"attestation_state":"computed","paper":{"title":"Candidate Electromagnetic Counterpart to the Binary Black Hole Merger Gravitational Wave Event S190521g","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. A. Mahabal, A. J. Drake, B. McKernan, B. Rusholme, D. Duev, D. Reiley, D. Stern, E. C. Bellm, F. J. Masci, G. Helou, H. Rodriguez, J. Belicki, K. Burdge, K. E. S. Ford, M. Coughlin, M. J. Graham, M. Kasliwal, M. T. Soumagnac, N. P. Ross, R. Burruss, R. M. Smith, S. B. Cenko, S. G. Djorgovski, S. R. Kulkarni, S. van Velzen, T. Prince, V. Cunningham","submitted_at":"2020-06-25T00:53:05Z","abstract_excerpt":"We report the first plausible optical electromagnetic (EM) counterpart to a (candidate) binary black hole (BBH) merger. Detected by the Zwicky Transient Facility (ZTF), the EM flare is consistent with expectations for a kicked BBH merger in the accretion disk of an active galactic nucleus (AGN), and is unlikely ($<O(0.01\\%$)) due to intrinsic variability of this source. The lack of color evolution implies that it is not a supernovae and instead is strongly suggestive of a constant temperature shock. Other false-positive events, such as microlensing or a tidal disruption event, are ruled out or"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2006.14122","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-25T00:53:05Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"7c492fd5a7fa02f609112992a67fac124888fa7d0bd0f3890a26ac46c19be384","abstract_canon_sha256":"f11b5ad46b2b4480a120bdc4fddb9859be5a813fae925bbd92007e5006b26e50"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:13:46.133656Z","signature_b64":"IzJcuVh79WX18b3JLXTLCdBhNTc6MzGiuD7mG5wjTHCL9h1rRhn212wveceR1kZq1TIBIJVBFmEl1hEqZ7NPCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48ebd3e2b295d200ae9ff396feb1e74d2c637e892e7b7cc28a6536f64fab42c2","last_reissued_at":"2026-07-05T01:13:46.133256Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:13:46.133256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Candidate Electromagnetic Counterpart to the Binary Black Hole Merger Gravitational Wave Event S190521g","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. A. Mahabal, A. J. Drake, B. McKernan, B. Rusholme, D. Duev, D. Reiley, D. Stern, E. C. Bellm, F. J. Masci, G. Helou, H. Rodriguez, J. Belicki, K. Burdge, K. E. S. Ford, M. Coughlin, M. J. Graham, M. Kasliwal, M. T. Soumagnac, N. P. Ross, R. Burruss, R. M. Smith, S. B. Cenko, S. G. Djorgovski, S. R. Kulkarni, S. van Velzen, T. Prince, V. Cunningham","submitted_at":"2020-06-25T00:53:05Z","abstract_excerpt":"We report the first plausible optical electromagnetic (EM) counterpart to a (candidate) binary black hole (BBH) merger. Detected by the Zwicky Transient Facility (ZTF), the EM flare is consistent with expectations for a kicked BBH merger in the accretion disk of an active galactic nucleus (AGN), and is unlikely ($<O(0.01\\%$)) due to intrinsic variability of this source. The lack of color evolution implies that it is not a supernovae and instead is strongly suggestive of a constant temperature shock. Other false-positive events, such as microlensing or a tidal disruption event, are ruled out or"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.14122","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/2006.14122/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2006.14122","created_at":"2026-07-05T01:13:46.133311+00:00"},{"alias_kind":"arxiv_version","alias_value":"2006.14122v1","created_at":"2026-07-05T01:13:46.133311+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.14122","created_at":"2026-07-05T01:13:46.133311+00:00"},{"alias_kind":"pith_short_12","alias_value":"JDV5HYVSSXJA","created_at":"2026-07-05T01:13:46.133311+00:00"},{"alias_kind":"pith_short_16","alias_value":"JDV5HYVSSXJABLU7","created_at":"2026-07-05T01:13:46.133311+00:00"},{"alias_kind":"pith_short_8","alias_value":"JDV5HYVS","created_at":"2026-07-05T01:13:46.133311+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":7,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.07120","citing_title":"Prospect for Detection of Strongly Lensed Multi-messenger Signals of Binary Neutron Star Mergers","ref_index":44,"is_internal_anchor":true},{"citing_arxiv_id":"2606.25304","citing_title":"Constraints on Line-of-Sight Acceleration from O1-O4","ref_index":33,"is_internal_anchor":false},{"citing_arxiv_id":"2606.04216","citing_title":"Shape of U: Measuring the Curvature of the Universe with Gravitational Waves","ref_index":96,"is_internal_anchor":false},{"citing_arxiv_id":"2311.01300","citing_title":"Waveform Modelling for the Laser Interferometer Space Antenna","ref_index":125,"is_internal_anchor":false},{"citing_arxiv_id":"2404.14286","citing_title":"Evidence for eccentricity in the population of binary black holes observed by LIGO-Virgo-KAGRA","ref_index":217,"is_internal_anchor":false},{"citing_arxiv_id":"2604.11871","citing_title":"Not too close! Evaluating the impact of the baseline on the localization of binary black holes by next-generation gravitational-wave detectors","ref_index":54,"is_internal_anchor":false},{"citing_arxiv_id":"2111.03606","citing_title":"GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run","ref_index":226,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU","json":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU.json","graph_json":"https://pith.science/api/pith-number/JDV5HYVSSXJABLU76OLP5MPHJU/graph.json","events_json":"https://pith.science/api/pith-number/JDV5HYVSSXJABLU76OLP5MPHJU/events.json","paper":"https://pith.science/paper/JDV5HYVS"},"agent_actions":{"view_html":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU","download_json":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU.json","view_paper":"https://pith.science/paper/JDV5HYVS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2006.14122&json=true","fetch_graph":"https://pith.science/api/pith-number/JDV5HYVSSXJABLU76OLP5MPHJU/graph.json","fetch_events":"https://pith.science/api/pith-number/JDV5HYVSSXJABLU76OLP5MPHJU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU/action/storage_attestation","attest_author":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU/action/author_attestation","sign_citation":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU/action/citation_signature","submit_replication":"https://pith.science/pith/JDV5HYVSSXJABLU76OLP5MPHJU/action/replication_record"}},"created_at":"2026-07-05T01:13:46.133311+00:00","updated_at":"2026-07-05T01:13:46.133311+00:00"}