{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:W3OKZVRDXP6JP7FHJM7ICZKTTU","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":"5d517c4d8405cf112a931bad12e22bec943a8d0d6cd7dbdb056bbb6d39a1f29c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-27T00:10:56Z","title_canon_sha256":"97c337f488f582543a6b1de78a47ab49f1e5212d562a279bfdefdd1fec7090cd"},"schema_version":"1.0","source":{"id":"1905.10909","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10909","created_at":"2026-05-17T23:40:31Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10909v1","created_at":"2026-05-17T23:40:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10909","created_at":"2026-05-17T23:40:31Z"},{"alias_kind":"pith_short_12","alias_value":"W3OKZVRDXP6J","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"W3OKZVRDXP6JP7FH","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"W3OKZVRD","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:3413c55a824fa43d064ecf6eef60493ec96c5b49d087a3c6c53f20744a46c0db","target":"graph","created_at":"2026-05-17T23:40:31Z","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 report results from joint NuSTAR, Swift and XMM-Newton observations of the newly discovered black hole X-ray binary candidate Swift J1658.2-4242 in the intermediate state. We observe a peculiar event in this source, with its X-ray flux rapidly decreasing by $\\sim$45\\% in $\\sim$40~s, accompanied by only subtle changes in the shape of the broadband X-ray spectrum. In addition, we find a sudden turn-on of a transient QPO with a frequency of $6-7$~Hz around the time of the flux change, and the total fractional rms amplitude of the power spectrum increases from $\\sim$2\\% to $\\sim$10\\%. X-ray spe","authors_text":"Didier Barret, Dominic J. Walton, Fiona A. Harrison, Javier A. Garcia, John A. Tomsick, Jon M. Miller, Phil Uttley, Poshak Gandhi, Yanjun Xu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-27T00:10:56Z","title":"Broadband X-ray Spectral and Timing Analyses of the Black Hole Binary Candidate Swift J1658.2-4242: Rapid Flux Variation and the Turn-on of a Transient QPO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10909","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":"sha256:9a58247d8e00a379cedd55472fee2553103ab5607e412306cd434476f31e6c91","target":"record","created_at":"2026-05-17T23:40:31Z","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":"5d517c4d8405cf112a931bad12e22bec943a8d0d6cd7dbdb056bbb6d39a1f29c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-27T00:10:56Z","title_canon_sha256":"97c337f488f582543a6b1de78a47ab49f1e5212d562a279bfdefdd1fec7090cd"},"schema_version":"1.0","source":{"id":"1905.10909","kind":"arxiv","version":1}},"canonical_sha256":"b6dcacd623bbfc97fca74b3e8165539d179ab66416d4316e3325da138dadd977","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6dcacd623bbfc97fca74b3e8165539d179ab66416d4316e3325da138dadd977","first_computed_at":"2026-05-17T23:40:31.728084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:31.728084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8KehjQma09hLPlqdMdP+9RTsFzOK9D7oOpX6nGhAoxJFaQgeJyQYItsM+9wnvjrIUlUG4lH46NK+07LIyEeNCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:31.728547Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.10909","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a58247d8e00a379cedd55472fee2553103ab5607e412306cd434476f31e6c91","sha256:3413c55a824fa43d064ecf6eef60493ec96c5b49d087a3c6c53f20744a46c0db"],"state_sha256":"b80b7b353e3f403dad97b960250427df99e0fe60d725f2bafb32de93c5ccf68c"}