{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:H7FXS4B5SJN2OUOTKI3B7KFBHS","short_pith_number":"pith:H7FXS4B5","canonical_record":{"source":{"id":"2503.05444","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-07T14:15:54Z","cross_cats_sorted":[],"title_canon_sha256":"531817b1927d003190c59f21d28152b1871c276b9763b0f4845535477f2be6c3","abstract_canon_sha256":"2e5004dd293b5044062eda62b2f4f5292fdcdac8189a63367914e4e3f9f1a06e"},"schema_version":"1.0"},"canonical_sha256":"3fcb79703d925ba751d352361fa8a13c92637124b26defeeea9e5f7e89edcfd4","source":{"kind":"arxiv","id":"2503.05444","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.05444","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"arxiv_version","alias_value":"2503.05444v1","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.05444","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"pith_short_12","alias_value":"H7FXS4B5SJN2","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"H7FXS4B5SJN2OUOT","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"H7FXS4B5","created_at":"2026-07-05T10:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:H7FXS4B5SJN2OUOTKI3B7KFBHS","target":"record","payload":{"canonical_record":{"source":{"id":"2503.05444","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-07T14:15:54Z","cross_cats_sorted":[],"title_canon_sha256":"531817b1927d003190c59f21d28152b1871c276b9763b0f4845535477f2be6c3","abstract_canon_sha256":"2e5004dd293b5044062eda62b2f4f5292fdcdac8189a63367914e4e3f9f1a06e"},"schema_version":"1.0"},"canonical_sha256":"3fcb79703d925ba751d352361fa8a13c92637124b26defeeea9e5f7e89edcfd4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:26:28.627488Z","signature_b64":"5hH4vPy0txvXU9mc3LmfDNDCsUFsrObsuUGc/LO0tcqL1AXf8p916aoUajtMDbq9B9nS/E4nJIrpv5KvnG/3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fcb79703d925ba751d352361fa8a13c92637124b26defeeea9e5f7e89edcfd4","last_reissued_at":"2026-07-05T10:26:28.626888Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:26:28.626888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.05444","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":"2026-07-05T10:26:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WRI8n3LFEZwAqVHWc0Do8FVmuUpsyXjLTCaZVKT7zt3UTaGMFxDCS1n03GLcrusYiM1nMTiatf0dNfYIxDYWAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T13:26:04.562791Z"},"content_sha256":"eb87213bd14f84f1754a1265d43781b0486b968278cadf7ec2919d40d884e000","schema_version":"1.0","event_id":"sha256:eb87213bd14f84f1754a1265d43781b0486b968278cadf7ec2919d40d884e000"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:H7FXS4B5SJN2OUOTKI3B7KFBHS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sidebands to mHz QPOs in 4U 1626$-$67 in the second spin-down state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Aru Beri, Biswajit Paul, Chetana Jain, Rahul Sharma","submitted_at":"2025-03-07T14:15:54Z","abstract_excerpt":"We report results from an $AstroSat$ Target-of-Opportunity (ToO) observation of 4U 1626$-$67, performed on 2023 May 18, soon after the discovery of torque reversal to spin-down in the source. The X-ray emission exhibited significant dependence on both energy and torque state. This work highlights the comparison of timing features of 4U 1626$-$67 with a previous $AstroSat$ observation from 2018, when the neutron star was in the spin-up state. The power density spectrum (PDS) of the 2023 observation comprised a sharp peak corresponding to $\\nu_{\\rm NS}\\sim$130 mHz X-ray pulsations along with a p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.05444","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/2503.05444/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":"2026-07-05T10:26:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BHJnx32M+6aSX7czMUz8VsQU/TUQhsdMEYxs6Ofg3NNo5tBDcQIoPNRNE+a7dk1anC6/UrTqa5tpemtHaq7fCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T13:26:04.564029Z"},"content_sha256":"d8ea2864e25fbeb91916eb0267ebd28cfc4e5ceca42ba568c2a0526eec18ad88","schema_version":"1.0","event_id":"sha256:d8ea2864e25fbeb91916eb0267ebd28cfc4e5ceca42ba568c2a0526eec18ad88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS/bundle.json","state_url":"https://pith.science/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS/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":"2026-08-12T13:26:04Z","links":{"resolver":"https://pith.science/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS","bundle":"https://pith.science/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS/bundle.json","state":"https://pith.science/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H7FXS4B5SJN2OUOTKI3B7KFBHS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:H7FXS4B5SJN2OUOTKI3B7KFBHS","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":"2e5004dd293b5044062eda62b2f4f5292fdcdac8189a63367914e4e3f9f1a06e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-07T14:15:54Z","title_canon_sha256":"531817b1927d003190c59f21d28152b1871c276b9763b0f4845535477f2be6c3"},"schema_version":"1.0","source":{"id":"2503.05444","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.05444","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"arxiv_version","alias_value":"2503.05444v1","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.05444","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"pith_short_12","alias_value":"H7FXS4B5SJN2","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"H7FXS4B5SJN2OUOT","created_at":"2026-07-05T10:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"H7FXS4B5","created_at":"2026-07-05T10:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:d8ea2864e25fbeb91916eb0267ebd28cfc4e5ceca42ba568c2a0526eec18ad88","target":"graph","created_at":"2026-07-05T10:26:28Z","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/2503.05444/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report results from an $AstroSat$ Target-of-Opportunity (ToO) observation of 4U 1626$-$67, performed on 2023 May 18, soon after the discovery of torque reversal to spin-down in the source. The X-ray emission exhibited significant dependence on both energy and torque state. This work highlights the comparison of timing features of 4U 1626$-$67 with a previous $AstroSat$ observation from 2018, when the neutron star was in the spin-up state. The power density spectrum (PDS) of the 2023 observation comprised a sharp peak corresponding to $\\nu_{\\rm NS}\\sim$130 mHz X-ray pulsations along with a p","authors_text":"Aru Beri, Biswajit Paul, Chetana Jain, Rahul Sharma","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-07T14:15:54Z","title":"Sidebands to mHz QPOs in 4U 1626$-$67 in the second spin-down state"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.05444","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:eb87213bd14f84f1754a1265d43781b0486b968278cadf7ec2919d40d884e000","target":"record","created_at":"2026-07-05T10:26:28Z","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":"2e5004dd293b5044062eda62b2f4f5292fdcdac8189a63367914e4e3f9f1a06e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-07T14:15:54Z","title_canon_sha256":"531817b1927d003190c59f21d28152b1871c276b9763b0f4845535477f2be6c3"},"schema_version":"1.0","source":{"id":"2503.05444","kind":"arxiv","version":1}},"canonical_sha256":"3fcb79703d925ba751d352361fa8a13c92637124b26defeeea9e5f7e89edcfd4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fcb79703d925ba751d352361fa8a13c92637124b26defeeea9e5f7e89edcfd4","first_computed_at":"2026-07-05T10:26:28.626888Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:26:28.626888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5hH4vPy0txvXU9mc3LmfDNDCsUFsrObsuUGc/LO0tcqL1AXf8p916aoUajtMDbq9B9nS/E4nJIrpv5KvnG/3AA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:26:28.627488Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.05444","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb87213bd14f84f1754a1265d43781b0486b968278cadf7ec2919d40d884e000","sha256:d8ea2864e25fbeb91916eb0267ebd28cfc4e5ceca42ba568c2a0526eec18ad88"],"state_sha256":"948a4df359b9acccca01ed4ec8b26abe111266e1153fd56646cbf8a7d1d6accb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oag6DqDZv17B1lJhDMHF63uJsCfyACIahd8dreFOjsptJH2+/kKLRalVZ7KxJQPwUFscHvdFIzy1csoAwpGiCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T13:26:04.603335Z","bundle_sha256":"a79c423d40342bb817abd7a16d9ba1d2feefcf21c7fac8be828d843176c28add"}}