{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:6FQFMVAFAW6ELKRUPJ2RPSDPKP","short_pith_number":"pith:6FQFMVAF","canonical_record":{"source":{"id":"astro-ph/0703441","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-16T14:55:27Z","cross_cats_sorted":[],"title_canon_sha256":"8c1240bbda6c9c006594e517ea6075be7a914feb8267e7d4f74da8f73ca3d77f","abstract_canon_sha256":"3b2c5f8eafddf93afd94c82f686780cb1790d31264bbcd32e7562396fcf4eaf6"},"schema_version":"1.0"},"canonical_sha256":"f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec","source":{"kind":"arxiv","id":"astro-ph/0703441","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703441","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703441v1","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703441","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"pith_short_12","alias_value":"6FQFMVAFAW6E","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"6FQFMVAFAW6ELKRU","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"6FQFMVAF","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:6FQFMVAFAW6ELKRUPJ2RPSDPKP","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0703441","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-16T14:55:27Z","cross_cats_sorted":[],"title_canon_sha256":"8c1240bbda6c9c006594e517ea6075be7a914feb8267e7d4f74da8f73ca3d77f","abstract_canon_sha256":"3b2c5f8eafddf93afd94c82f686780cb1790d31264bbcd32e7562396fcf4eaf6"},"schema_version":"1.0"},"canonical_sha256":"f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:05.590297Z","signature_b64":"FX+ho/+WehyRv+6n9Zq8GT5Q+SIqE82Bql1L0/rF8pdGnmeH9VuShidOFrVmHn6FPVSa33QXC63Czw9wGIOJBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec","last_reissued_at":"2026-05-18T04:29:05.589880Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:05.589880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0703441","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":"2026-05-18T04:29:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ptvyx0tppHvM0NocvfL3tFQk7ptuzHiDReipCHeClejAizAiivwyZGHUUptxuHBKHHZVtOwrDAy1B/JTHdWfBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T06:20:14.629221Z"},"content_sha256":"a5d59c18cc84eb384bf485ebb9706755834f2e52fe7131d5b2befac7dde64e9b","schema_version":"1.0","event_id":"sha256:a5d59c18cc84eb384bf485ebb9706755834f2e52fe7131d5b2befac7dde64e9b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:6FQFMVAFAW6ELKRUPJ2RPSDPKP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Determination of Black Hole Mass in Cyg X-1 by Scaling of Spectral Index-QPO Frequency Correlation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Lev Titarchuk, Nickolai Shaposhnikov","submitted_at":"2007-03-16T14:55:27Z","abstract_excerpt":"It is well established that timing and spectral properties of Galactic Black Hole (BH) X-ray binaries (XRB) are strongly correlated. In particular, it has been shown that low frequency Quasi-Periodic Oscillation (QPO) frequency - photon index correlation curves have a specific pattern. In a number of sources the shape of the index-low frequency QPO correlations are self-similar with a position offset in the QPO frequency-Gamma plane. Titarchuk & Fiorito presented strong theoretical and observational arguments that the QPO frequency values in this QPO frequency-Gamma correlation should be inver"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703441","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":"2026-05-18T04:29:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5hbnQ5tQM3SpwsHbsj3qAK3mbLyDjjRrFUymMQKOquNISLhlZCldYLL6fxwmMqEgh+AmhBipSkbLkLvS8rdWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T06:20:14.629734Z"},"content_sha256":"3e2982d13db9455fa74d1b8fcccc4b329a2d967340850633fdf1c55b0c3b2837","schema_version":"1.0","event_id":"sha256:3e2982d13db9455fa74d1b8fcccc4b329a2d967340850633fdf1c55b0c3b2837"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP/bundle.json","state_url":"https://pith.science/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP/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":"2026-08-08T06:20:14Z","links":{"resolver":"https://pith.science/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP","bundle":"https://pith.science/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP/bundle.json","state":"https://pith.science/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6FQFMVAFAW6ELKRUPJ2RPSDPKP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:6FQFMVAFAW6ELKRUPJ2RPSDPKP","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":"3b2c5f8eafddf93afd94c82f686780cb1790d31264bbcd32e7562396fcf4eaf6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-16T14:55:27Z","title_canon_sha256":"8c1240bbda6c9c006594e517ea6075be7a914feb8267e7d4f74da8f73ca3d77f"},"schema_version":"1.0","source":{"id":"astro-ph/0703441","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703441","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703441v1","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703441","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"pith_short_12","alias_value":"6FQFMVAFAW6E","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"6FQFMVAFAW6ELKRU","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"6FQFMVAF","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:3e2982d13db9455fa74d1b8fcccc4b329a2d967340850633fdf1c55b0c3b2837","target":"graph","created_at":"2026-05-18T04:29:05Z","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":"It is well established that timing and spectral properties of Galactic Black Hole (BH) X-ray binaries (XRB) are strongly correlated. In particular, it has been shown that low frequency Quasi-Periodic Oscillation (QPO) frequency - photon index correlation curves have a specific pattern. In a number of sources the shape of the index-low frequency QPO correlations are self-similar with a position offset in the QPO frequency-Gamma plane. Titarchuk & Fiorito presented strong theoretical and observational arguments that the QPO frequency values in this QPO frequency-Gamma correlation should be inver","authors_text":"Lev Titarchuk, Nickolai Shaposhnikov","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-03-16T14:55:27Z","title":"Determination of Black Hole Mass in Cyg X-1 by Scaling of Spectral Index-QPO Frequency Correlation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703441","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:a5d59c18cc84eb384bf485ebb9706755834f2e52fe7131d5b2befac7dde64e9b","target":"record","created_at":"2026-05-18T04:29:05Z","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":"3b2c5f8eafddf93afd94c82f686780cb1790d31264bbcd32e7562396fcf4eaf6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-16T14:55:27Z","title_canon_sha256":"8c1240bbda6c9c006594e517ea6075be7a914feb8267e7d4f74da8f73ca3d77f"},"schema_version":"1.0","source":{"id":"astro-ph/0703441","kind":"arxiv","version":1}},"canonical_sha256":"f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f16056540505bc45aa347a7517c86f53c0f7e5b99fed822de2642a1f296480ec","first_computed_at":"2026-05-18T04:29:05.589880Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:05.589880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FX+ho/+WehyRv+6n9Zq8GT5Q+SIqE82Bql1L0/rF8pdGnmeH9VuShidOFrVmHn6FPVSa33QXC63Czw9wGIOJBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:05.590297Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0703441","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5d59c18cc84eb384bf485ebb9706755834f2e52fe7131d5b2befac7dde64e9b","sha256:3e2982d13db9455fa74d1b8fcccc4b329a2d967340850633fdf1c55b0c3b2837"],"state_sha256":"635769e89260fc51eef687006e5e81d28c31652f19e22bf2cbfebcee5f5457ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sHUOoJTv7wsQ7tOmPaKz2hVuNBPJXB63aGBGGYGfyL6Z1DyGwoTSwO/Cce1pUYGljYZxOylEH7b0ejMERsXJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T06:20:14.633765Z","bundle_sha256":"acceed353f6478ce034742caf2885f627e83d9b7677c5b52619fcbddf22d6db3"}}