{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OQZAGRFR2VF53G5D2ZZL2REYLY","short_pith_number":"pith:OQZAGRFR","canonical_record":{"source":{"id":"1310.2604","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-09T20:00:00Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"3b0a36b326193463c20248a918a251bf5ebdf331d7a1f8e5c77378406a7ca034","abstract_canon_sha256":"ea286a713892ec55b79b8d609108ce3088a8fa6c0a0c57310d68da9a2a9d023c"},"schema_version":"1.0"},"canonical_sha256":"74320344b1d54bdd9ba3d672bd44985e3fc8ddfad5cb54d7664344656c50c232","source":{"kind":"arxiv","id":"1310.2604","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2604","created_at":"2026-05-18T01:47:07Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2604v1","created_at":"2026-05-18T01:47:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2604","created_at":"2026-05-18T01:47:07Z"},{"alias_kind":"pith_short_12","alias_value":"OQZAGRFR2VF5","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OQZAGRFR2VF53G5D","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OQZAGRFR","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OQZAGRFR2VF53G5D2ZZL2REYLY","target":"record","payload":{"canonical_record":{"source":{"id":"1310.2604","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-09T20:00:00Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"3b0a36b326193463c20248a918a251bf5ebdf331d7a1f8e5c77378406a7ca034","abstract_canon_sha256":"ea286a713892ec55b79b8d609108ce3088a8fa6c0a0c57310d68da9a2a9d023c"},"schema_version":"1.0"},"canonical_sha256":"74320344b1d54bdd9ba3d672bd44985e3fc8ddfad5cb54d7664344656c50c232","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:07.386163Z","signature_b64":"hUDOnr52l2x+gEyIgoYQvOWNIyXJPVX99MqZTIr08+qc9Ebh1dJpUrFCLxF0b8Fu0XnB5lSR3kXQgin3NA4zBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74320344b1d54bdd9ba3d672bd44985e3fc8ddfad5cb54d7664344656c50c232","last_reissued_at":"2026-05-18T01:47:07.385646Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:07.385646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.2604","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":"2026-05-18T01:47:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Bt/4fKTtNA3joemMMBSHx9tbGZ9AfyGIY7W8fhYItKMWUs1VS49epttr3+BYZsdCIzYPM1zawyb+hyZUhCWDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:10:58.253979Z"},"content_sha256":"8a53bc1a773f2cc34ce9ed544a3d497f3a5631aacb3d40078e78964788f10725","schema_version":"1.0","event_id":"sha256:8a53bc1a773f2cc34ce9ed544a3d497f3a5631aacb3d40078e78964788f10725"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OQZAGRFR2VF53G5D2ZZL2REYLY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Combined Analysis of Hubble and VLT Photometry of the Intermediate Mass Black Hole ESO 243-49 HLX-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Albert K. H. Kong, Christian Knigge, Claudia Maraston, Didier Barret, George K. T. Hau, Janine Pforr, Jeanette C. Gladstone, Klaas Wiersema, Mathieu Servillat, Natalie A. Webb, Pasi J. Hakala, Roberto Soria, Sean A. Farrell, Thomas J. Maccarone","submitted_at":"2013-10-09T20:00:00Z","abstract_excerpt":"In this paper we present a combined analysis of data obtained with the Hubble Space Telescope (HST), Very Large Telescope (VLT), and Swift X-ray telescope (XRT) of the intermediate mass black hole ESO 243-49 HLX-1 that were taken 2 months apart between September and November 2010. Previous separate analyses of these data found that they were consistent with an irradiated accretion disc with contribution from either a very young or very old stellar population, and also indicated that the optical flux of the HLX-1 counterpart could be variable. Such variability could only be attributed to a vary"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2604","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":"2026-05-18T01:47:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bqITdDcsR6bwnr0zscLDj21mMRWkoyfHl1dDx6bgV2mJBZsmizLWRcr/QVWK652/dwidhxBDwNJmdBvAhybhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:10:58.254340Z"},"content_sha256":"e9bdcb8fe062c762088c3e77043b68406ac89a5a5240794869c5c0a2f76781bc","schema_version":"1.0","event_id":"sha256:e9bdcb8fe062c762088c3e77043b68406ac89a5a5240794869c5c0a2f76781bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OQZAGRFR2VF53G5D2ZZL2REYLY/bundle.json","state_url":"https://pith.science/pith/OQZAGRFR2VF53G5D2ZZL2REYLY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OQZAGRFR2VF53G5D2ZZL2REYLY/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":"2026-06-01T07:10:58Z","links":{"resolver":"https://pith.science/pith/OQZAGRFR2VF53G5D2ZZL2REYLY","bundle":"https://pith.science/pith/OQZAGRFR2VF53G5D2ZZL2REYLY/bundle.json","state":"https://pith.science/pith/OQZAGRFR2VF53G5D2ZZL2REYLY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OQZAGRFR2VF53G5D2ZZL2REYLY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OQZAGRFR2VF53G5D2ZZL2REYLY","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":"ea286a713892ec55b79b8d609108ce3088a8fa6c0a0c57310d68da9a2a9d023c","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-09T20:00:00Z","title_canon_sha256":"3b0a36b326193463c20248a918a251bf5ebdf331d7a1f8e5c77378406a7ca034"},"schema_version":"1.0","source":{"id":"1310.2604","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2604","created_at":"2026-05-18T01:47:07Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2604v1","created_at":"2026-05-18T01:47:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2604","created_at":"2026-05-18T01:47:07Z"},{"alias_kind":"pith_short_12","alias_value":"OQZAGRFR2VF5","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OQZAGRFR2VF53G5D","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OQZAGRFR","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:e9bdcb8fe062c762088c3e77043b68406ac89a5a5240794869c5c0a2f76781bc","target":"graph","created_at":"2026-05-18T01:47:07Z","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":"In this paper we present a combined analysis of data obtained with the Hubble Space Telescope (HST), Very Large Telescope (VLT), and Swift X-ray telescope (XRT) of the intermediate mass black hole ESO 243-49 HLX-1 that were taken 2 months apart between September and November 2010. Previous separate analyses of these data found that they were consistent with an irradiated accretion disc with contribution from either a very young or very old stellar population, and also indicated that the optical flux of the HLX-1 counterpart could be variable. Such variability could only be attributed to a vary","authors_text":"Albert K. H. Kong, Christian Knigge, Claudia Maraston, Didier Barret, George K. T. Hau, Janine Pforr, Jeanette C. Gladstone, Klaas Wiersema, Mathieu Servillat, Natalie A. Webb, Pasi J. Hakala, Roberto Soria, Sean A. Farrell, Thomas J. Maccarone","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-09T20:00:00Z","title":"Combined Analysis of Hubble and VLT Photometry of the Intermediate Mass Black Hole ESO 243-49 HLX-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2604","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":"sha256:8a53bc1a773f2cc34ce9ed544a3d497f3a5631aacb3d40078e78964788f10725","target":"record","created_at":"2026-05-18T01:47:07Z","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":"ea286a713892ec55b79b8d609108ce3088a8fa6c0a0c57310d68da9a2a9d023c","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-09T20:00:00Z","title_canon_sha256":"3b0a36b326193463c20248a918a251bf5ebdf331d7a1f8e5c77378406a7ca034"},"schema_version":"1.0","source":{"id":"1310.2604","kind":"arxiv","version":1}},"canonical_sha256":"74320344b1d54bdd9ba3d672bd44985e3fc8ddfad5cb54d7664344656c50c232","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74320344b1d54bdd9ba3d672bd44985e3fc8ddfad5cb54d7664344656c50c232","first_computed_at":"2026-05-18T01:47:07.385646Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:07.385646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hUDOnr52l2x+gEyIgoYQvOWNIyXJPVX99MqZTIr08+qc9Ebh1dJpUrFCLxF0b8Fu0XnB5lSR3kXQgin3NA4zBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:07.386163Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.2604","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a53bc1a773f2cc34ce9ed544a3d497f3a5631aacb3d40078e78964788f10725","sha256:e9bdcb8fe062c762088c3e77043b68406ac89a5a5240794869c5c0a2f76781bc"],"state_sha256":"0a0689207e1d838f7c3e4e59ca09695a6a45941d633959e0833710867e2d7f83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9elIr9rV986bvlzoZHaiAKCx6tnRUXZWESGSIrVwUdChbuU4KQFGvmy72gvw5CzHYywVX92LjqZAZRwiK/t4CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T07:10:58.256281Z","bundle_sha256":"34956f6c7725be40dab5751283e27a8fd612dabc9f8c269c6125d1f6b4f12c05"}}