{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:PKEONHKGLAUNSZRABMUZBT6JA3","short_pith_number":"pith:PKEONHKG","canonical_record":{"source":{"id":"1001.1738","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-11T21:00:46Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"a0111cb8900f0f74245cce1dca33ca0c42c05fc34d82ebf40f0e6e0abe8dc986","abstract_canon_sha256":"4adf18f3e26af61bf8d3f51a2f25a5e86ea9c197eedc3f54f00cb4995fdb93ac"},"schema_version":"1.0"},"canonical_sha256":"7a88e69d465828d966200b2990cfc906da2295a20ed9c17b92e66611bd073733","source":{"kind":"arxiv","id":"1001.1738","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.1738","created_at":"2026-05-18T02:10:02Z"},{"alias_kind":"arxiv_version","alias_value":"1001.1738v3","created_at":"2026-05-18T02:10:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.1738","created_at":"2026-05-18T02:10:02Z"},{"alias_kind":"pith_short_12","alias_value":"PKEONHKGLAUN","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"PKEONHKGLAUNSZRA","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"PKEONHKG","created_at":"2026-05-18T12:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:PKEONHKGLAUNSZRABMUZBT6JA3","target":"record","payload":{"canonical_record":{"source":{"id":"1001.1738","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-11T21:00:46Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"a0111cb8900f0f74245cce1dca33ca0c42c05fc34d82ebf40f0e6e0abe8dc986","abstract_canon_sha256":"4adf18f3e26af61bf8d3f51a2f25a5e86ea9c197eedc3f54f00cb4995fdb93ac"},"schema_version":"1.0"},"canonical_sha256":"7a88e69d465828d966200b2990cfc906da2295a20ed9c17b92e66611bd073733","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:02.905113Z","signature_b64":"pOg4f7LgT2GxPnC6YE67zg0RKNCmTvt3q4dPLc8xhT1I3Y2honQH0XyRwbDTxYxHignDvY/DS7jcIpeDGgqgDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a88e69d465828d966200b2990cfc906da2295a20ed9c17b92e66611bd073733","last_reissued_at":"2026-05-18T02:10:02.904399Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:02.904399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.1738","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":"2026-05-18T02:10:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0EgOdMh0kiEHkcAU+k+PhknE+zPH6ATwiJzyzg7dTzwt17UnM4FDZyKUY+cQdHsulfWqNPDQ+mZGuN064Q/DBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:15:37.229367Z"},"content_sha256":"0bb66a431c6c678c50fc448e8ba0e50608821bfb49664e51907c93ecc1e375b0","schema_version":"1.0","event_id":"sha256:0bb66a431c6c678c50fc448e8ba0e50608821bfb49664e51907c93ecc1e375b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:PKEONHKGLAUNSZRABMUZBT6JA3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SDSS J1254+0846: A Binary Quasar Caught in the Act of Merging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"(2) University of Illinois at Urbana-Champaign (3) University of North Dakota, 3), (5) University of California, (6) National Radio Astronomy Observatory), Adam D. Myers (2), Grand Forks (4) The Observatories of the Carnegie Institution for Science, Joan M. Wrobel (6) ((1) Harvard-Smithsonian Center for Astrophysics, John S. Mulchaey (4), Paul J. Green (1), Santa Barbara, Thomas J. Cox (1, Thomas L. Aldcroft (1), Vardha N. Bennert (5), Wayne A. Barkhouse (3)","submitted_at":"2010-01-11T21:00:46Z","abstract_excerpt":"We present the first luminous, spatially resolved binary quasar that clearly inhabits an ongoing galaxy merger. SDSS J125455.09+084653.9 and SDSS J125454.87+084652.1 (SDSS J1254+0846 hereafter) are two luminous z=0.44 radio quiet quasars, with a radial velocity difference of just 215 km/s, separated on the sky by 21 kpc in a disturbed host galaxy merger showing obvious tidal tails. The pair was targeted as part of a complete sample of binary quasar candidates with small transverse separations drawn from SDSS DR6 photometry. We present follow-up optical imaging which shows broad, symmetrical ti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.1738","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":""},"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":"2026-05-18T02:10:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w5BperRnhEuAdutygnj5O/8Guugx9flNv39JqGBK9vuAeFwsS6FoyGNIdsKRCZyRUtv9UgpH8woYB3ypPgB9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:15:37.229747Z"},"content_sha256":"b1ac03cd156ddb293a74b9615003a3695c3be6cd014dab3c2fc3cb4ab1108897","schema_version":"1.0","event_id":"sha256:b1ac03cd156ddb293a74b9615003a3695c3be6cd014dab3c2fc3cb4ab1108897"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PKEONHKGLAUNSZRABMUZBT6JA3/bundle.json","state_url":"https://pith.science/pith/PKEONHKGLAUNSZRABMUZBT6JA3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PKEONHKGLAUNSZRABMUZBT6JA3/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":"2026-06-02T21:15:37Z","links":{"resolver":"https://pith.science/pith/PKEONHKGLAUNSZRABMUZBT6JA3","bundle":"https://pith.science/pith/PKEONHKGLAUNSZRABMUZBT6JA3/bundle.json","state":"https://pith.science/pith/PKEONHKGLAUNSZRABMUZBT6JA3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PKEONHKGLAUNSZRABMUZBT6JA3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:PKEONHKGLAUNSZRABMUZBT6JA3","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":"4adf18f3e26af61bf8d3f51a2f25a5e86ea9c197eedc3f54f00cb4995fdb93ac","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-11T21:00:46Z","title_canon_sha256":"a0111cb8900f0f74245cce1dca33ca0c42c05fc34d82ebf40f0e6e0abe8dc986"},"schema_version":"1.0","source":{"id":"1001.1738","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.1738","created_at":"2026-05-18T02:10:02Z"},{"alias_kind":"arxiv_version","alias_value":"1001.1738v3","created_at":"2026-05-18T02:10:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.1738","created_at":"2026-05-18T02:10:02Z"},{"alias_kind":"pith_short_12","alias_value":"PKEONHKGLAUN","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"PKEONHKGLAUNSZRA","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"PKEONHKG","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:b1ac03cd156ddb293a74b9615003a3695c3be6cd014dab3c2fc3cb4ab1108897","target":"graph","created_at":"2026-05-18T02:10:02Z","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":"We present the first luminous, spatially resolved binary quasar that clearly inhabits an ongoing galaxy merger. SDSS J125455.09+084653.9 and SDSS J125454.87+084652.1 (SDSS J1254+0846 hereafter) are two luminous z=0.44 radio quiet quasars, with a radial velocity difference of just 215 km/s, separated on the sky by 21 kpc in a disturbed host galaxy merger showing obvious tidal tails. The pair was targeted as part of a complete sample of binary quasar candidates with small transverse separations drawn from SDSS DR6 photometry. We present follow-up optical imaging which shows broad, symmetrical ti","authors_text":"(2) University of Illinois at Urbana-Champaign (3) University of North Dakota, 3), (5) University of California, (6) National Radio Astronomy Observatory), Adam D. Myers (2), Grand Forks (4) The Observatories of the Carnegie Institution for Science, Joan M. Wrobel (6) ((1) Harvard-Smithsonian Center for Astrophysics, John S. Mulchaey (4), Paul J. Green (1), Santa Barbara, Thomas J. Cox (1, Thomas L. Aldcroft (1), Vardha N. Bennert (5), Wayne A. Barkhouse (3)","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-11T21:00:46Z","title":"SDSS J1254+0846: A Binary Quasar Caught in the Act of Merging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.1738","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":"sha256:0bb66a431c6c678c50fc448e8ba0e50608821bfb49664e51907c93ecc1e375b0","target":"record","created_at":"2026-05-18T02:10:02Z","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":"4adf18f3e26af61bf8d3f51a2f25a5e86ea9c197eedc3f54f00cb4995fdb93ac","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-11T21:00:46Z","title_canon_sha256":"a0111cb8900f0f74245cce1dca33ca0c42c05fc34d82ebf40f0e6e0abe8dc986"},"schema_version":"1.0","source":{"id":"1001.1738","kind":"arxiv","version":3}},"canonical_sha256":"7a88e69d465828d966200b2990cfc906da2295a20ed9c17b92e66611bd073733","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a88e69d465828d966200b2990cfc906da2295a20ed9c17b92e66611bd073733","first_computed_at":"2026-05-18T02:10:02.904399Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:02.904399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pOg4f7LgT2GxPnC6YE67zg0RKNCmTvt3q4dPLc8xhT1I3Y2honQH0XyRwbDTxYxHignDvY/DS7jcIpeDGgqgDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:02.905113Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.1738","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0bb66a431c6c678c50fc448e8ba0e50608821bfb49664e51907c93ecc1e375b0","sha256:b1ac03cd156ddb293a74b9615003a3695c3be6cd014dab3c2fc3cb4ab1108897"],"state_sha256":"7abdc0123119bc742d5008574b0c5778222a6f0045900528f221330393ba4e22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sEnlDcMwIJNpJ2d5xwTN/QMpJAw+ii/LnNez8FZZk1u6xrvjFapMQ6jscZHk7RZQZgGaPGhExKQwqvPd8W7cBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:15:37.232015Z","bundle_sha256":"ca94e55847c681a0ec545ca660c7608a380bfaeb58e2201fdec01bc8f825e523"}}