{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CJ2MPI7GJY2LWFQKPMSQ7A5DVG","short_pith_number":"pith:CJ2MPI7G","canonical_record":{"source":{"id":"1210.2641","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-09T15:30:21Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b7d178a2f055e03947c7126dd7218f634c7e92da43287b281d0c2c7c3fc6c06c","abstract_canon_sha256":"d1a97c835fdf5e15e75dd906b5ae9d958693adb0ad009a9616918b1ee0d386d8"},"schema_version":"1.0"},"canonical_sha256":"1274c7a3e64e34bb160a7b250f83a3a9b9d48dbb827dce64f597cd17b4e337ce","source":{"kind":"arxiv","id":"1210.2641","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2641","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2641v1","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2641","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"pith_short_12","alias_value":"CJ2MPI7GJY2L","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CJ2MPI7GJY2LWFQK","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CJ2MPI7G","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CJ2MPI7GJY2LWFQKPMSQ7A5DVG","target":"record","payload":{"canonical_record":{"source":{"id":"1210.2641","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-09T15:30:21Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b7d178a2f055e03947c7126dd7218f634c7e92da43287b281d0c2c7c3fc6c06c","abstract_canon_sha256":"d1a97c835fdf5e15e75dd906b5ae9d958693adb0ad009a9616918b1ee0d386d8"},"schema_version":"1.0"},"canonical_sha256":"1274c7a3e64e34bb160a7b250f83a3a9b9d48dbb827dce64f597cd17b4e337ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:03.988934Z","signature_b64":"JmncfDs4jNfmRvxKE0kexB8rTepKT+D65QzmmhcrFherl84I6YxTq6A9gnRcK9e2cRVgLk1nNf5D35Sn839lCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1274c7a3e64e34bb160a7b250f83a3a9b9d48dbb827dce64f597cd17b4e337ce","last_reissued_at":"2026-05-18T01:54:03.988370Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:03.988370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.2641","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":"2026-05-18T01:54:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hlWpVoGnCS2DTBHyF7ORKnOPbr3nNGydawEtc7hZRQ/Qxyd9V4DiSvrU54RVFvqTTS/Gf/uS7YVucTTOyKwvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:08:32.672259Z"},"content_sha256":"44b51962845510d8ef4d1557eb4b0a27fcd83302ee914397b502fdbf1269ab98","schema_version":"1.0","event_id":"sha256:44b51962845510d8ef4d1557eb4b0a27fcd83302ee914397b502fdbf1269ab98"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CJ2MPI7GJY2LWFQKPMSQ7A5DVG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mass estimate of the Swift J 164449.3+573451 supermassive black hole based on the 3:2 QPO resonance hypothesis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"F. K. Liu, M. A. Abramowicz","submitted_at":"2012-10-09T15:30:21Z","abstract_excerpt":"A dormant Swift source J 164449.3+573451 (Sw 164449+57)recently experienced a powerful outburst, caused most probably by a tidal disruption of a star by the super-massive black hole at the center of the source. During the outburst, a quasi periodic oscillation (QPO) was detected in the observed X-ray flux from Sw 164449+57. We show that if the observed QPO belongs to a \"3:2 twin peak QPO\" (with the second frequency not observed), the mass of the black hole in Sw 164449+57 is rather low, M ~ 10^5 M_sun, and the source belongs to a class of intermediate mass black holes. The low mass of the sour"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2641","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":"2026-05-18T01:54:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2+Is2b8L1TRqZt2UEWL2apXl0Zq6oamqcpnvP0rdiQze0tFl6sGtECF2kfb8J8ipQ1l7KdSpAB8CDLRNCFnnCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:08:32.672618Z"},"content_sha256":"900f990869b954cb503a48c3fadd2cbebbb20f459ed59ad32b1956ecdac86659","schema_version":"1.0","event_id":"sha256:900f990869b954cb503a48c3fadd2cbebbb20f459ed59ad32b1956ecdac86659"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG/bundle.json","state_url":"https://pith.science/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG/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":"2026-05-28T12:08:32Z","links":{"resolver":"https://pith.science/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG","bundle":"https://pith.science/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG/bundle.json","state":"https://pith.science/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CJ2MPI7GJY2LWFQKPMSQ7A5DVG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CJ2MPI7GJY2LWFQKPMSQ7A5DVG","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":"d1a97c835fdf5e15e75dd906b5ae9d958693adb0ad009a9616918b1ee0d386d8","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-09T15:30:21Z","title_canon_sha256":"b7d178a2f055e03947c7126dd7218f634c7e92da43287b281d0c2c7c3fc6c06c"},"schema_version":"1.0","source":{"id":"1210.2641","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2641","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2641v1","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2641","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"pith_short_12","alias_value":"CJ2MPI7GJY2L","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CJ2MPI7GJY2LWFQK","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CJ2MPI7G","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:900f990869b954cb503a48c3fadd2cbebbb20f459ed59ad32b1956ecdac86659","target":"graph","created_at":"2026-05-18T01:54:03Z","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":"A dormant Swift source J 164449.3+573451 (Sw 164449+57)recently experienced a powerful outburst, caused most probably by a tidal disruption of a star by the super-massive black hole at the center of the source. During the outburst, a quasi periodic oscillation (QPO) was detected in the observed X-ray flux from Sw 164449+57. We show that if the observed QPO belongs to a \"3:2 twin peak QPO\" (with the second frequency not observed), the mass of the black hole in Sw 164449+57 is rather low, M ~ 10^5 M_sun, and the source belongs to a class of intermediate mass black holes. The low mass of the sour","authors_text":"F. K. Liu, M. A. Abramowicz","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-09T15:30:21Z","title":"Mass estimate of the Swift J 164449.3+573451 supermassive black hole based on the 3:2 QPO resonance hypothesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2641","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":"sha256:44b51962845510d8ef4d1557eb4b0a27fcd83302ee914397b502fdbf1269ab98","target":"record","created_at":"2026-05-18T01:54:03Z","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":"d1a97c835fdf5e15e75dd906b5ae9d958693adb0ad009a9616918b1ee0d386d8","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-09T15:30:21Z","title_canon_sha256":"b7d178a2f055e03947c7126dd7218f634c7e92da43287b281d0c2c7c3fc6c06c"},"schema_version":"1.0","source":{"id":"1210.2641","kind":"arxiv","version":1}},"canonical_sha256":"1274c7a3e64e34bb160a7b250f83a3a9b9d48dbb827dce64f597cd17b4e337ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1274c7a3e64e34bb160a7b250f83a3a9b9d48dbb827dce64f597cd17b4e337ce","first_computed_at":"2026-05-18T01:54:03.988370Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:03.988370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JmncfDs4jNfmRvxKE0kexB8rTepKT+D65QzmmhcrFherl84I6YxTq6A9gnRcK9e2cRVgLk1nNf5D35Sn839lCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:03.988934Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.2641","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44b51962845510d8ef4d1557eb4b0a27fcd83302ee914397b502fdbf1269ab98","sha256:900f990869b954cb503a48c3fadd2cbebbb20f459ed59ad32b1956ecdac86659"],"state_sha256":"bacdb8d6b05a4980f044b4a8a109db972f974d5f1ac4fa033f01b3b51c95bde1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nOxZTrgQfqw8d7Bxg2rFDCYezgLdppOE50QhlT8+VT/So8nkJPWPunN/B4nv2ofb7u0x1HsUYba1LkL7IBPQAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:08:32.674532Z","bundle_sha256":"ef26716e66ce9c91f701165fe8197685208c93ff2a1eb1b013b89563f66e7381"}}