{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:SUBEWM4NQKCGQHVIU42XBTQR25","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":"7d14e27c4f3b060816e5a5215bf5828af535cea9dd14a077d1b45659510b45d3","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-14T15:39:42Z","title_canon_sha256":"d2fe436a92cb2f7631556cbe3eb6d9ce880a8c3096e52b5547f623f44e79b494"},"schema_version":"1.0","source":{"id":"1607.04167","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04167","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04167v1","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04167","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"pith_short_12","alias_value":"SUBEWM4NQKCG","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"SUBEWM4NQKCGQHVI","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"SUBEWM4N","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:e4ea7212d09b3490c78d737b5f83e7f0645ab8a58009d2a1e173088f3b2188e7","target":"graph","created_at":"2026-05-18T01:08:38Z","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":"Timing results for the black-widow pulsar J2051-0827 are presented, using a 21-year dataset from four European Pulsar Timing Array telescopes and the Parkes radio telescope. This dataset, which is the longest published to date for a black-widow system, allows for an improved analysis that addresses previously unknown biases. While secular variations, as identified in previous analyses, are recovered, short-term variations are detected for the first time. Concurrently, a significant decrease of approx. 2.5x10-3 cm-3 pc in the dispersion measure associated with PSR J2051-0827 is measured for the","authors_text":"A. G. Lyne, A. Jessner, A. Possenti, B. W. Stappers, C. G. Bassa, C. Jordan, C. Tiburzi, D.J. Champion, D. Perrodin, E. Graikou, G. Desvignes, G. H. Janssen, G. Shaifullah, I. Cognard, J. P. W. Verbiest, J. W. McKee, K. Lazaridis, L. Guillemot, M. Kramer, N. Wex, P. C. C. Freire, P. Lazarus, R. Karuppusamy, R. N. Caballero, S. Os{\\l}owski, T. M. Tauris","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-14T15:39:42Z","title":"21-year timing of the black-widow pulsar J2051-0827"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04167","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":"sha256:2a8c6d7071c5a5fb9e93b9e466d687b29b3729efb459610a1f94d4bb99e7bc72","target":"record","created_at":"2026-05-18T01:08:38Z","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":"7d14e27c4f3b060816e5a5215bf5828af535cea9dd14a077d1b45659510b45d3","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-14T15:39:42Z","title_canon_sha256":"d2fe436a92cb2f7631556cbe3eb6d9ce880a8c3096e52b5547f623f44e79b494"},"schema_version":"1.0","source":{"id":"1607.04167","kind":"arxiv","version":1}},"canonical_sha256":"95024b338d8284681ea8a73570ce11d74d4f590aefccac4d97d48eb0d0fc3ec5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95024b338d8284681ea8a73570ce11d74d4f590aefccac4d97d48eb0d0fc3ec5","first_computed_at":"2026-05-18T01:08:38.157740Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:38.157740Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F4B6zKzbUKJ3Q+DdW3yG3Fi2zJAfIZG3yn+js0GW57Lj9CM6v1rRK3D7rtlYzGHz+GKFF7IFnKCWBlv6VbcfAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:38.158368Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.04167","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a8c6d7071c5a5fb9e93b9e466d687b29b3729efb459610a1f94d4bb99e7bc72","sha256:e4ea7212d09b3490c78d737b5f83e7f0645ab8a58009d2a1e173088f3b2188e7"],"state_sha256":"5cd58ab5acdf0d2cdd67a394c0d468319ac23f9df4d0211b8a6b53d4e26af544"}