{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:WQKUZ6TYQAPOIIAL4YUT3KOJ4I","short_pith_number":"pith:WQKUZ6TY","canonical_record":{"source":{"id":"1605.01753","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-05-05T20:52:24Z","cross_cats_sorted":[],"title_canon_sha256":"83f74779374e69647a9e4d9e8c46ecb6114be9e3491d743ae6edf78a756669fa","abstract_canon_sha256":"8cf3b131cf2eabf96c42c92404996d686f63770223b627d87f38c1a01e576823"},"schema_version":"1.0"},"canonical_sha256":"b4154cfa78801ee4200be6293da9c9e21ad5f7c5b4a8b7fccc4f9b3ef0d682e2","source":{"kind":"arxiv","id":"1605.01753","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01753","created_at":"2026-05-18T01:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01753v2","created_at":"2026-05-18T01:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01753","created_at":"2026-05-18T01:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"WQKUZ6TYQAPO","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WQKUZ6TYQAPOIIAL","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WQKUZ6TY","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:WQKUZ6TYQAPOIIAL4YUT3KOJ4I","target":"record","payload":{"canonical_record":{"source":{"id":"1605.01753","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-05-05T20:52:24Z","cross_cats_sorted":[],"title_canon_sha256":"83f74779374e69647a9e4d9e8c46ecb6114be9e3491d743ae6edf78a756669fa","abstract_canon_sha256":"8cf3b131cf2eabf96c42c92404996d686f63770223b627d87f38c1a01e576823"},"schema_version":"1.0"},"canonical_sha256":"b4154cfa78801ee4200be6293da9c9e21ad5f7c5b4a8b7fccc4f9b3ef0d682e2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:01.820529Z","signature_b64":"gC0RlEl3li9aaBDuVLxBaWMLRVSSW4LUMuF7NNGvvnlapqgi4iVT168gxXwxWiyOYAvl2ZObb98nEARzEy1wAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4154cfa78801ee4200be6293da9c9e21ad5f7c5b4a8b7fccc4f9b3ef0d682e2","last_reissued_at":"2026-05-18T01:11:01.819980Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:01.819980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.01753","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":"2026-05-18T01:11:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QryWfmt90STDm/ZpxC55pM7X+J1Y0+PtfVuUQU2Kb5Rk0Ae4PXm9RSua1ejhZI2gZAeMX0vAEdzLFn9EF3Z6Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T10:42:09.400091Z"},"content_sha256":"3c7eac23891f29a302b792d080978d00d04c38e97f47f688ce7f57129a163cfa","schema_version":"1.0","event_id":"sha256:3c7eac23891f29a302b792d080978d00d04c38e97f47f688ce7f57129a163cfa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:WQKUZ6TYQAPOIIAL4YUT3KOJ4I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase-Resolved Spectroscopy of Type B Quasi-Periodic Oscillations in GX 339-4","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Abigail L. Stevens, Phil Uttley","submitted_at":"2016-05-05T20:52:24Z","abstract_excerpt":"We present a new spectral-timing technique for phase-resolved spectroscopy and apply it to the low-frequency Type B quasi-periodic oscillation (QPO) from the black hole X-ray binary GX 339-4. We show that on the QPO time-scale the spectrum changes not only in normalisation, but also in spectral shape. Using several different spectral models which parameterise the blackbody and power-law components seen in the time-averaged spectrum, we find that both components are required to vary, although the fractional rms amplitude of blackbody emission is small, ~1.4 per cent compared to ~25 per cent for"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01753","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":""},"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":"2026-05-18T01:11:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NvbTrIBBS7scDyfSqAwRgoiEGyPb1EmsmfA7hhRNzsC3XNWa0OkTsXbgUIE/c8AWYYDeYmdoeqD8LfLILPmIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T10:42:09.400454Z"},"content_sha256":"7d977058e78e165eb498a8efd6e20ab7ce709620c0ce9e667d1aa3ca8bfca298","schema_version":"1.0","event_id":"sha256:7d977058e78e165eb498a8efd6e20ab7ce709620c0ce9e667d1aa3ca8bfca298"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I/bundle.json","state_url":"https://pith.science/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I/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":"2026-06-05T10:42:09Z","links":{"resolver":"https://pith.science/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I","bundle":"https://pith.science/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I/bundle.json","state":"https://pith.science/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WQKUZ6TYQAPOIIAL4YUT3KOJ4I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WQKUZ6TYQAPOIIAL4YUT3KOJ4I","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":"8cf3b131cf2eabf96c42c92404996d686f63770223b627d87f38c1a01e576823","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-05-05T20:52:24Z","title_canon_sha256":"83f74779374e69647a9e4d9e8c46ecb6114be9e3491d743ae6edf78a756669fa"},"schema_version":"1.0","source":{"id":"1605.01753","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01753","created_at":"2026-05-18T01:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01753v2","created_at":"2026-05-18T01:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01753","created_at":"2026-05-18T01:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"WQKUZ6TYQAPO","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WQKUZ6TYQAPOIIAL","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WQKUZ6TY","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:7d977058e78e165eb498a8efd6e20ab7ce709620c0ce9e667d1aa3ca8bfca298","target":"graph","created_at":"2026-05-18T01:11:01Z","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":"We present a new spectral-timing technique for phase-resolved spectroscopy and apply it to the low-frequency Type B quasi-periodic oscillation (QPO) from the black hole X-ray binary GX 339-4. We show that on the QPO time-scale the spectrum changes not only in normalisation, but also in spectral shape. Using several different spectral models which parameterise the blackbody and power-law components seen in the time-averaged spectrum, we find that both components are required to vary, although the fractional rms amplitude of blackbody emission is small, ~1.4 per cent compared to ~25 per cent for","authors_text":"Abigail L. Stevens, Phil Uttley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-05-05T20:52:24Z","title":"Phase-Resolved Spectroscopy of Type B Quasi-Periodic Oscillations in GX 339-4"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01753","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":"sha256:3c7eac23891f29a302b792d080978d00d04c38e97f47f688ce7f57129a163cfa","target":"record","created_at":"2026-05-18T01:11:01Z","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":"8cf3b131cf2eabf96c42c92404996d686f63770223b627d87f38c1a01e576823","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-05-05T20:52:24Z","title_canon_sha256":"83f74779374e69647a9e4d9e8c46ecb6114be9e3491d743ae6edf78a756669fa"},"schema_version":"1.0","source":{"id":"1605.01753","kind":"arxiv","version":2}},"canonical_sha256":"b4154cfa78801ee4200be6293da9c9e21ad5f7c5b4a8b7fccc4f9b3ef0d682e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4154cfa78801ee4200be6293da9c9e21ad5f7c5b4a8b7fccc4f9b3ef0d682e2","first_computed_at":"2026-05-18T01:11:01.819980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:01.819980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gC0RlEl3li9aaBDuVLxBaWMLRVSSW4LUMuF7NNGvvnlapqgi4iVT168gxXwxWiyOYAvl2ZObb98nEARzEy1wAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:01.820529Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.01753","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c7eac23891f29a302b792d080978d00d04c38e97f47f688ce7f57129a163cfa","sha256:7d977058e78e165eb498a8efd6e20ab7ce709620c0ce9e667d1aa3ca8bfca298"],"state_sha256":"c4a3e98e81f7e24fb4a8d76e458d8c2d0565b5551490f7e22885fd94c778f8a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r2Eu0htnHap/I9+JHgFP1IEmo/hZHMUrZVkT6w/jqqkEChqBJXMWQY3Zs2P7qv5xxve2R2pCQqFvzfEiyDPICw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T10:42:09.402449Z","bundle_sha256":"69efb6aa0f3742ee7dfe9948be7fc2ff18b923d0144c4d11b5021e1229f4a8a3"}}