{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:AHV7FU34YI3ZCTDWFUC7VTDQJJ","short_pith_number":"pith:AHV7FU34","canonical_record":{"source":{"id":"astro-ph/0503081","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-03-03T17:05:56Z","cross_cats_sorted":[],"title_canon_sha256":"bb0e0b0e5c666a88428d4d8feddd28945078fd80990a3469e35bac8fc1c2294f","abstract_canon_sha256":"bb355832ccfcdcf03fa538ea32a63dd7c49be825212d1541805b50a4d513ecfa"},"schema_version":"1.0"},"canonical_sha256":"01ebf2d37cc237914c762d05facc704a5dd8138d71a247905b2390b62a02eeca","source":{"kind":"arxiv","id":"astro-ph/0503081","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0503081","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0503081v1","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0503081","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"pith_short_12","alias_value":"AHV7FU34YI3Z","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"pith_short_16","alias_value":"AHV7FU34YI3ZCTDW","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"pith_short_8","alias_value":"AHV7FU34","created_at":"2026-07-04T16:50:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:AHV7FU34YI3ZCTDWFUC7VTDQJJ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0503081","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-03-03T17:05:56Z","cross_cats_sorted":[],"title_canon_sha256":"bb0e0b0e5c666a88428d4d8feddd28945078fd80990a3469e35bac8fc1c2294f","abstract_canon_sha256":"bb355832ccfcdcf03fa538ea32a63dd7c49be825212d1541805b50a4d513ecfa"},"schema_version":"1.0"},"canonical_sha256":"01ebf2d37cc237914c762d05facc704a5dd8138d71a247905b2390b62a02eeca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:50:56.083431Z","signature_b64":"QbCtYwNU2HEdX1lYUbgpKF+QSOB7PtuFxRKH+cFsC5QZpE6uDq6x7dm8Cz+YlPNDQrT2iGalb/FLbGUoX7r0Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01ebf2d37cc237914c762d05facc704a5dd8138d71a247905b2390b62a02eeca","last_reissued_at":"2026-07-04T16:50:56.083041Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:50:56.083041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0503081","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":"2026-07-04T16:50:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VfaF0hPP90+4sgSiL+mieP9EEevxexM/RwzMSjsHnKEzkruZpQcVpYNZJ9KIYxWdjeapEG0VZpIW9I4mKNgEAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T16:15:54.438919Z"},"content_sha256":"26fc6e71d87e6f4ad4147162a18c7e0e65ea6c2c7a1d6a4a3d221d958f90a387","schema_version":"1.0","event_id":"sha256:26fc6e71d87e6f4ad4147162a18c7e0e65ea6c2c7a1d6a4a3d221d958f90a387"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:AHV7FU34YI3ZCTDWFUC7VTDQJJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How To Distinguish Neutron Star and Black Hole X-ray Binaries? Spectral index and Quasi-Periodic Oscillation Frequency Correlation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Lev Titarchuk (GMU/NRL/GSFC), Nickolai Shaposhnikov (GSFC/USRA)","submitted_at":"2005-03-03T17:05:56Z","abstract_excerpt":"Recent studies have revealed strong correlations between 1-10 Hz frequencies of quasiperiodic oscillations (QPOs) and the spectral power law index of several Black Hole (BH) candidate sources when seen in the low/hard state, the steep power-law (soft) state, and in transition between these states. In the soft state these index-QPO frequency correlations show a saturation of the photon index about 2.7 at high values of the low frequency. This saturation effect was previously identified as a black hole signature. In this paper we argue that this saturation does not occur, at least for one neutro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0503081","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0503081/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":"2026-07-04T16:50:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FhLUaTUmVWJbTWfZXlavUmk2simZERXNmMbgN5EHk1D7wzW/+T+y+Cnr8VCqD9bs1emBNSZWM9+k0czUeBqmDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T16:15:54.439427Z"},"content_sha256":"e2aa041a66d6bf4402f66c0fd4f40a4f53338e8c8757c158133b8d85e8fdd05d","schema_version":"1.0","event_id":"sha256:e2aa041a66d6bf4402f66c0fd4f40a4f53338e8c8757c158133b8d85e8fdd05d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ/bundle.json","state_url":"https://pith.science/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ/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":"2026-08-08T16:15:54Z","links":{"resolver":"https://pith.science/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ","bundle":"https://pith.science/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ/bundle.json","state":"https://pith.science/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AHV7FU34YI3ZCTDWFUC7VTDQJJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:AHV7FU34YI3ZCTDWFUC7VTDQJJ","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":"bb355832ccfcdcf03fa538ea32a63dd7c49be825212d1541805b50a4d513ecfa","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-03-03T17:05:56Z","title_canon_sha256":"bb0e0b0e5c666a88428d4d8feddd28945078fd80990a3469e35bac8fc1c2294f"},"schema_version":"1.0","source":{"id":"astro-ph/0503081","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0503081","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0503081v1","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0503081","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"pith_short_12","alias_value":"AHV7FU34YI3Z","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"pith_short_16","alias_value":"AHV7FU34YI3ZCTDW","created_at":"2026-07-04T16:50:56Z"},{"alias_kind":"pith_short_8","alias_value":"AHV7FU34","created_at":"2026-07-04T16:50:56Z"}],"graph_snapshots":[{"event_id":"sha256:e2aa041a66d6bf4402f66c0fd4f40a4f53338e8c8757c158133b8d85e8fdd05d","target":"graph","created_at":"2026-07-04T16:50:56Z","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/0503081/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent studies have revealed strong correlations between 1-10 Hz frequencies of quasiperiodic oscillations (QPOs) and the spectral power law index of several Black Hole (BH) candidate sources when seen in the low/hard state, the steep power-law (soft) state, and in transition between these states. In the soft state these index-QPO frequency correlations show a saturation of the photon index about 2.7 at high values of the low frequency. This saturation effect was previously identified as a black hole signature. In this paper we argue that this saturation does not occur, at least for one neutro","authors_text":"Lev Titarchuk (GMU/NRL/GSFC), Nickolai Shaposhnikov (GSFC/USRA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-03-03T17:05:56Z","title":"How To Distinguish Neutron Star and Black Hole X-ray Binaries? Spectral index and Quasi-Periodic Oscillation Frequency Correlation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0503081","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":"sha256:26fc6e71d87e6f4ad4147162a18c7e0e65ea6c2c7a1d6a4a3d221d958f90a387","target":"record","created_at":"2026-07-04T16:50:56Z","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":"bb355832ccfcdcf03fa538ea32a63dd7c49be825212d1541805b50a4d513ecfa","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-03-03T17:05:56Z","title_canon_sha256":"bb0e0b0e5c666a88428d4d8feddd28945078fd80990a3469e35bac8fc1c2294f"},"schema_version":"1.0","source":{"id":"astro-ph/0503081","kind":"arxiv","version":1}},"canonical_sha256":"01ebf2d37cc237914c762d05facc704a5dd8138d71a247905b2390b62a02eeca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01ebf2d37cc237914c762d05facc704a5dd8138d71a247905b2390b62a02eeca","first_computed_at":"2026-07-04T16:50:56.083041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:50:56.083041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QbCtYwNU2HEdX1lYUbgpKF+QSOB7PtuFxRKH+cFsC5QZpE6uDq6x7dm8Cz+YlPNDQrT2iGalb/FLbGUoX7r0Bg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:50:56.083431Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0503081","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26fc6e71d87e6f4ad4147162a18c7e0e65ea6c2c7a1d6a4a3d221d958f90a387","sha256:e2aa041a66d6bf4402f66c0fd4f40a4f53338e8c8757c158133b8d85e8fdd05d"],"state_sha256":"99efd298bda2e20860fe3edde14fb07666f729305c1b127c825240a6894c392f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xriGJuTjcjbL842a+CNIc3biFPQyTDsWee9rElSWZ/GnNsiBjHfMkaWVRGdDink++ycF6LMwuoH8w71s2IEKCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T16:15:54.443864Z","bundle_sha256":"c0fa9608b5b407ddac06671a253d661f28fd5e8de7148132b5ee5cdfd8abbaf2"}}