{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:QD5VD5VATAE2UUQBA5N2WCRKIL","short_pith_number":"pith:QD5VD5VA","canonical_record":{"source":{"id":"astro-ph/0607501","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-21T12:54:52Z","cross_cats_sorted":[],"title_canon_sha256":"bb6c4d73cbe3a8f01d1fbd4045e8e1b7b7126b9f0ad6720bca800d5666ebc59f","abstract_canon_sha256":"8045bf2c71252fbff1531747313d3c275d01cf0c8043d7a4f18bfe0428414bb8"},"schema_version":"1.0"},"canonical_sha256":"80fb51f6a09809aa5201075bab0a2a42d1ddd5bc82ffd4bc906d8dc50459bf06","source":{"kind":"arxiv","id":"astro-ph/0607501","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607501","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607501v2","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607501","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"QD5VD5VATAE2","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"pith_short_16","alias_value":"QD5VD5VATAE2UUQB","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"pith_short_8","alias_value":"QD5VD5VA","created_at":"2026-07-04T15:49:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:QD5VD5VATAE2UUQBA5N2WCRKIL","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0607501","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-21T12:54:52Z","cross_cats_sorted":[],"title_canon_sha256":"bb6c4d73cbe3a8f01d1fbd4045e8e1b7b7126b9f0ad6720bca800d5666ebc59f","abstract_canon_sha256":"8045bf2c71252fbff1531747313d3c275d01cf0c8043d7a4f18bfe0428414bb8"},"schema_version":"1.0"},"canonical_sha256":"80fb51f6a09809aa5201075bab0a2a42d1ddd5bc82ffd4bc906d8dc50459bf06","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:49:50.940176Z","signature_b64":"bAtIY7yhWn2d8+K8RDZAaKMVsOYex15T/hniPcw4lzxROEi/09/z5REPc6hXlNf4E/ZEGrntKOiFRMwVvZ93Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80fb51f6a09809aa5201075bab0a2a42d1ddd5bc82ffd4bc906d8dc50459bf06","last_reissued_at":"2026-07-04T15:49:50.939826Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:49:50.939826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0607501","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:49:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EZAqnOqZmiCVApAm2feoUd1M/zBuVDNbXfoA16FGRSCPIU9tyB6+fWqSwUP7yj3STwjA1OB+jI2S5w3kDeCRBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:51:38.242319Z"},"content_sha256":"d01cc30d658948f54a999b319fde5e5d0a8deddb2a1221004345bf670f830b4a","schema_version":"1.0","event_id":"sha256:d01cc30d658948f54a999b319fde5e5d0a8deddb2a1221004345bf670f830b4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:QD5VD5VATAE2UUQBA5N2WCRKIL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Have we detected the most luminous ULX so far?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"3), 4) ((1) Institute of Astronomy, A.C. Fabian (1), Cambridge; (2) Dip. di Astronomia, G. Malaguti (3), G. Miniutti (1), G. Ponti (2, M. Cappi (3), M. Dadina (3), P. Gandhi (1, Santiago), Univ. di Bologna; (3) IASF/INAF Bologna; (4) ESO","submitted_at":"2006-07-21T12:54:52Z","abstract_excerpt":"We report the XMM-Newton detection of a moderately bright X-ray source superimposed on the outer arms of the inactive spiral galaxy MCG-03-34-63 (z=0.0213). It is clearly offset from the nucleus (by about 19'') but well within the D25 ellipse of the galaxy, just along its bar axis. The field has also been observed with the HST enabling us to compute a lower limit of > 94 on the X-ray to optical flux ratio which, together with the X-ray spectrum of the source, argues against a background AGN. On the other hand, the detection of excess X-ray absorption and the lack of a bright optical counterpar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607501","kind":"arxiv","version":2},"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/astro-ph/0607501/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:49:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WFktm6fcWReEkMFCPfsDJ4cZkbeekrfWQq7nRk0KjI9eLxBQvmlllta9mNowZ2Ro9ngjgqcxZFNR4E/+7qqRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:51:38.242928Z"},"content_sha256":"0845a1caff3ce2023edda3ccffd5ac78c2f58f6c7f7e868c0a8b771aa88dd51a","schema_version":"1.0","event_id":"sha256:0845a1caff3ce2023edda3ccffd5ac78c2f58f6c7f7e868c0a8b771aa88dd51a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QD5VD5VATAE2UUQBA5N2WCRKIL/bundle.json","state_url":"https://pith.science/pith/QD5VD5VATAE2UUQBA5N2WCRKIL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QD5VD5VATAE2UUQBA5N2WCRKIL/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":"2026-08-03T19:51:38Z","links":{"resolver":"https://pith.science/pith/QD5VD5VATAE2UUQBA5N2WCRKIL","bundle":"https://pith.science/pith/QD5VD5VATAE2UUQBA5N2WCRKIL/bundle.json","state":"https://pith.science/pith/QD5VD5VATAE2UUQBA5N2WCRKIL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QD5VD5VATAE2UUQBA5N2WCRKIL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:QD5VD5VATAE2UUQBA5N2WCRKIL","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":"8045bf2c71252fbff1531747313d3c275d01cf0c8043d7a4f18bfe0428414bb8","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-21T12:54:52Z","title_canon_sha256":"bb6c4d73cbe3a8f01d1fbd4045e8e1b7b7126b9f0ad6720bca800d5666ebc59f"},"schema_version":"1.0","source":{"id":"astro-ph/0607501","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607501","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607501v2","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607501","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"QD5VD5VATAE2","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"pith_short_16","alias_value":"QD5VD5VATAE2UUQB","created_at":"2026-07-04T15:49:50Z"},{"alias_kind":"pith_short_8","alias_value":"QD5VD5VA","created_at":"2026-07-04T15:49:50Z"}],"graph_snapshots":[{"event_id":"sha256:0845a1caff3ce2023edda3ccffd5ac78c2f58f6c7f7e868c0a8b771aa88dd51a","target":"graph","created_at":"2026-07-04T15:49:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0607501/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the XMM-Newton detection of a moderately bright X-ray source superimposed on the outer arms of the inactive spiral galaxy MCG-03-34-63 (z=0.0213). It is clearly offset from the nucleus (by about 19'') but well within the D25 ellipse of the galaxy, just along its bar axis. The field has also been observed with the HST enabling us to compute a lower limit of > 94 on the X-ray to optical flux ratio which, together with the X-ray spectrum of the source, argues against a background AGN. On the other hand, the detection of excess X-ray absorption and the lack of a bright optical counterpar","authors_text":"3), 4) ((1) Institute of Astronomy, A.C. Fabian (1), Cambridge; (2) Dip. di Astronomia, G. Malaguti (3), G. Miniutti (1), G. Ponti (2, M. Cappi (3), M. Dadina (3), P. Gandhi (1, Santiago), Univ. di Bologna; (3) IASF/INAF Bologna; (4) ESO","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-07-21T12:54:52Z","title":"Have we detected the most luminous ULX so far?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607501","kind":"arxiv","version":2},"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:d01cc30d658948f54a999b319fde5e5d0a8deddb2a1221004345bf670f830b4a","target":"record","created_at":"2026-07-04T15:49:50Z","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":"8045bf2c71252fbff1531747313d3c275d01cf0c8043d7a4f18bfe0428414bb8","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-21T12:54:52Z","title_canon_sha256":"bb6c4d73cbe3a8f01d1fbd4045e8e1b7b7126b9f0ad6720bca800d5666ebc59f"},"schema_version":"1.0","source":{"id":"astro-ph/0607501","kind":"arxiv","version":2}},"canonical_sha256":"80fb51f6a09809aa5201075bab0a2a42d1ddd5bc82ffd4bc906d8dc50459bf06","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80fb51f6a09809aa5201075bab0a2a42d1ddd5bc82ffd4bc906d8dc50459bf06","first_computed_at":"2026-07-04T15:49:50.939826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:49:50.939826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bAtIY7yhWn2d8+K8RDZAaKMVsOYex15T/hniPcw4lzxROEi/09/z5REPc6hXlNf4E/ZEGrntKOiFRMwVvZ93Ag==","signature_status":"signed_v1","signed_at":"2026-07-04T15:49:50.940176Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0607501","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d01cc30d658948f54a999b319fde5e5d0a8deddb2a1221004345bf670f830b4a","sha256:0845a1caff3ce2023edda3ccffd5ac78c2f58f6c7f7e868c0a8b771aa88dd51a"],"state_sha256":"e64cb1abed3228dc771e5635f365631e7a987db3f54c1b8dc51a862cbcff4880"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yoBkc5D62JuwdNm0u8S/mLWhcXiA/ln0OH0j/+iggqvg56bVrbnVlWsvP7m3WjU/5Hq3er5KDZcGTC/lcbDrBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:51:38.248231Z","bundle_sha256":"ef84103152ea1e1228ebb618a6579b26c6bcb482056b852e0d152d657e5f1f7b"}}