{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:NQBVR6TOP4LNKOXLZJS2DB4PZ4","short_pith_number":"pith:NQBVR6TO","canonical_record":{"source":{"id":"1402.6324","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-25T21:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"d88b4825ca2032b8478eaff211c076430212a064c9ac849cb06e120805a4722c","abstract_canon_sha256":"a6a5aab0e6c9baa37336a109275c7c485131b94e95e97350b4432ebd91c74e64"},"schema_version":"1.0"},"canonical_sha256":"6c0358fa6e7f16d53aebca65a1878fcf1c87d4bca78d14b0d64d259860b532a0","source":{"kind":"arxiv","id":"1402.6324","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.6324","created_at":"2026-05-18T01:44:27Z"},{"alias_kind":"arxiv_version","alias_value":"1402.6324v2","created_at":"2026-05-18T01:44:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.6324","created_at":"2026-05-18T01:44:27Z"},{"alias_kind":"pith_short_12","alias_value":"NQBVR6TOP4LN","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NQBVR6TOP4LNKOXL","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NQBVR6TO","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:NQBVR6TOP4LNKOXLZJS2DB4PZ4","target":"record","payload":{"canonical_record":{"source":{"id":"1402.6324","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-25T21:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"d88b4825ca2032b8478eaff211c076430212a064c9ac849cb06e120805a4722c","abstract_canon_sha256":"a6a5aab0e6c9baa37336a109275c7c485131b94e95e97350b4432ebd91c74e64"},"schema_version":"1.0"},"canonical_sha256":"6c0358fa6e7f16d53aebca65a1878fcf1c87d4bca78d14b0d64d259860b532a0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:27.277495Z","signature_b64":"C87CD75SWLEH61VIZiJqTLbCBj4lkm6KUBgcNe6EwmBrKS7JC1ZRUGD9TVXHco5jLF3boPqqNI3lpbmRLWQSCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c0358fa6e7f16d53aebca65a1878fcf1c87d4bca78d14b0d64d259860b532a0","last_reissued_at":"2026-05-18T01:44:27.277002Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:27.277002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.6324","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":"2026-05-18T01:44:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fpP39uR7476w9vL9QFGOSvvkqhdoonlN22sLwswsOniTxtaZW6Nsb2csQzEnuNUV9ljQvVpsJbtWDyFt8HDxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:29:23.160061Z"},"content_sha256":"f36e6d1a9ff50de615ec971e4163748a169627afd0f0f44acc394cc98774ba86","schema_version":"1.0","event_id":"sha256:f36e6d1a9ff50de615ec971e4163748a169627afd0f0f44acc394cc98774ba86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:NQBVR6TOP4LNKOXLZJS2DB4PZ4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-ray Observations of XSS J12270-4859 in a New Low State: A Transformation to a Disk-Free Rotation-Powered Pulsar Binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Alessandro Patruno (Leiden, Amsterdam), Anne M. Archibald (ASTRON), ASTRON), Ben W. Stappers (Jodrell Bank), Cees Bassa (ASTRON), Gemma H. Janssen (ASTRON), Jason W. T. Hessels (ASTRON, Slavko Bogdanov (Columbia)","submitted_at":"2014-02-25T21:00:09Z","abstract_excerpt":"We present XMM-Newton and Chandra observations of the low-mass X-ray binary XSS J12270--4859, which experienced a dramatic decline in optical/X-ray brightness at the end of 2012, indicative of the disappearance of its accretion disk. In this new state, the system exhibits previously absent orbital-phase-dependent, large-amplitude X-ray modulations with a decline in flux at superior conjunction. The X-ray emission remains predominantly non-thermal but with an order of magnitude lower mean luminosity and significantly harder spectrum relative to the previous high flux state. This phenomenology i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6324","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":"2026-05-18T01:44:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vzsar5IxPiQ5JA4WVU6Zd9ju7tldItdgVs1qa0Z51zOohSWifWmOifolsPjDsZxAjdcEDdetgFxK/K4IuJtICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:29:23.160718Z"},"content_sha256":"ed9bae10f184de1c895ed3d2c108bfc31d6123edd5544496e5fff48ead526de2","schema_version":"1.0","event_id":"sha256:ed9bae10f184de1c895ed3d2c108bfc31d6123edd5544496e5fff48ead526de2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4/bundle.json","state_url":"https://pith.science/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4/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":"2026-05-30T05:29:23Z","links":{"resolver":"https://pith.science/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4","bundle":"https://pith.science/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4/bundle.json","state":"https://pith.science/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NQBVR6TOP4LNKOXLZJS2DB4PZ4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:NQBVR6TOP4LNKOXLZJS2DB4PZ4","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":"a6a5aab0e6c9baa37336a109275c7c485131b94e95e97350b4432ebd91c74e64","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-25T21:00:09Z","title_canon_sha256":"d88b4825ca2032b8478eaff211c076430212a064c9ac849cb06e120805a4722c"},"schema_version":"1.0","source":{"id":"1402.6324","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.6324","created_at":"2026-05-18T01:44:27Z"},{"alias_kind":"arxiv_version","alias_value":"1402.6324v2","created_at":"2026-05-18T01:44:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.6324","created_at":"2026-05-18T01:44:27Z"},{"alias_kind":"pith_short_12","alias_value":"NQBVR6TOP4LN","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NQBVR6TOP4LNKOXL","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NQBVR6TO","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:ed9bae10f184de1c895ed3d2c108bfc31d6123edd5544496e5fff48ead526de2","target":"graph","created_at":"2026-05-18T01:44:27Z","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 XMM-Newton and Chandra observations of the low-mass X-ray binary XSS J12270--4859, which experienced a dramatic decline in optical/X-ray brightness at the end of 2012, indicative of the disappearance of its accretion disk. In this new state, the system exhibits previously absent orbital-phase-dependent, large-amplitude X-ray modulations with a decline in flux at superior conjunction. The X-ray emission remains predominantly non-thermal but with an order of magnitude lower mean luminosity and significantly harder spectrum relative to the previous high flux state. This phenomenology i","authors_text":"Alessandro Patruno (Leiden, Amsterdam), Anne M. Archibald (ASTRON), ASTRON), Ben W. Stappers (Jodrell Bank), Cees Bassa (ASTRON), Gemma H. Janssen (ASTRON), Jason W. T. Hessels (ASTRON, Slavko Bogdanov (Columbia)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-25T21:00:09Z","title":"X-ray Observations of XSS J12270-4859 in a New Low State: A Transformation to a Disk-Free Rotation-Powered Pulsar Binary"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6324","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:f36e6d1a9ff50de615ec971e4163748a169627afd0f0f44acc394cc98774ba86","target":"record","created_at":"2026-05-18T01:44:27Z","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":"a6a5aab0e6c9baa37336a109275c7c485131b94e95e97350b4432ebd91c74e64","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-25T21:00:09Z","title_canon_sha256":"d88b4825ca2032b8478eaff211c076430212a064c9ac849cb06e120805a4722c"},"schema_version":"1.0","source":{"id":"1402.6324","kind":"arxiv","version":2}},"canonical_sha256":"6c0358fa6e7f16d53aebca65a1878fcf1c87d4bca78d14b0d64d259860b532a0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c0358fa6e7f16d53aebca65a1878fcf1c87d4bca78d14b0d64d259860b532a0","first_computed_at":"2026-05-18T01:44:27.277002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:27.277002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C87CD75SWLEH61VIZiJqTLbCBj4lkm6KUBgcNe6EwmBrKS7JC1ZRUGD9TVXHco5jLF3boPqqNI3lpbmRLWQSCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:27.277495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.6324","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f36e6d1a9ff50de615ec971e4163748a169627afd0f0f44acc394cc98774ba86","sha256:ed9bae10f184de1c895ed3d2c108bfc31d6123edd5544496e5fff48ead526de2"],"state_sha256":"86cd657505bc78601f5b9c423a97e0e47f8bc60a9d7999f715dba0219e9cdfb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s+PcLXYPwx4yVNiG7Se03a7xBjEWabfSAn0k/KyIBqcTW/bIF+FnmBnNOBjM6IUnyyj3gDb6Woil5rNUEGt1AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:29:23.164564Z","bundle_sha256":"d6587cc0fdd241cd5ccced6b12b08e711e912d70391079141bf14a31f69a574f"}}