{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:G4FANCBKAMLPBGR5JGM7ZRJEYT","short_pith_number":"pith:G4FANCBK","schema_version":"1.0","canonical_sha256":"370a06882a0316f09a3d4999fcc524c4cbdc72a15396b50476bd602e54475cbf","source":{"kind":"arxiv","id":"1202.2121","version":1},"attestation_state":"computed","paper":{"title":"Spectral monitoring of RX J1856.5-3754 with XMM-Newton. Analysis of EPIC-pn data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. De Luca, A. Tiengo, F. Haberl, N. Sartore, R. Turolla, S. Mereghetti","submitted_at":"2012-02-09T21:00:04Z","abstract_excerpt":"Using a large set of XMM-Newton observations we searched for long term spectral and flux variability of the isolated neutron star RX J1856.5-3754 in the time interval from April 2002 to October 2011. This is the brightest and most extensively observed source of a small group of nearby, thermally emitting isolated neutron stars, of which at least one member (RX J0720.4-3125, Hohle et al., 2010) has shown long term variability. A detailed analysis of the data obtained with the EPIC-pn camera in the 0.15-1.2 keV energy range reveals small variations in the temperature derived with a single blackb"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1202.2121","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-09T21:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"ca61b18571547e0a5d7d37bb6b7ab3ff81655df618c9fe0b55c2dd80e135633a","abstract_canon_sha256":"765b02f0a4b93da588b92bd343bc5af427a79b2a340154de225530c6b92669e1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:31.564223Z","signature_b64":"Q3WkYIsaiWqrBwS0bf3SrLTZaEO1tMmFjf0I9Doikxqr3n9AIsldrQv8qkdnQRVnaM02R5pIrz//HvVsgipPCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"370a06882a0316f09a3d4999fcc524c4cbdc72a15396b50476bd602e54475cbf","last_reissued_at":"2026-05-18T01:58:31.563643Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:31.563643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectral monitoring of RX J1856.5-3754 with XMM-Newton. Analysis of EPIC-pn data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. De Luca, A. Tiengo, F. Haberl, N. Sartore, R. Turolla, S. Mereghetti","submitted_at":"2012-02-09T21:00:04Z","abstract_excerpt":"Using a large set of XMM-Newton observations we searched for long term spectral and flux variability of the isolated neutron star RX J1856.5-3754 in the time interval from April 2002 to October 2011. This is the brightest and most extensively observed source of a small group of nearby, thermally emitting isolated neutron stars, of which at least one member (RX J0720.4-3125, Hohle et al., 2010) has shown long term variability. A detailed analysis of the data obtained with the EPIC-pn camera in the 0.15-1.2 keV energy range reveals small variations in the temperature derived with a single blackb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.2121","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1202.2121","created_at":"2026-05-18T01:58:31.563734+00:00"},{"alias_kind":"arxiv_version","alias_value":"1202.2121v1","created_at":"2026-05-18T01:58:31.563734+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.2121","created_at":"2026-05-18T01:58:31.563734+00:00"},{"alias_kind":"pith_short_12","alias_value":"G4FANCBKAMLP","created_at":"2026-05-18T12:27:06.952714+00:00"},{"alias_kind":"pith_short_16","alias_value":"G4FANCBKAMLPBGR5","created_at":"2026-05-18T12:27:06.952714+00:00"},{"alias_kind":"pith_short_8","alias_value":"G4FANCBK","created_at":"2026-05-18T12:27:06.952714+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT","json":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT.json","graph_json":"https://pith.science/api/pith-number/G4FANCBKAMLPBGR5JGM7ZRJEYT/graph.json","events_json":"https://pith.science/api/pith-number/G4FANCBKAMLPBGR5JGM7ZRJEYT/events.json","paper":"https://pith.science/paper/G4FANCBK"},"agent_actions":{"view_html":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT","download_json":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT.json","view_paper":"https://pith.science/paper/G4FANCBK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1202.2121&json=true","fetch_graph":"https://pith.science/api/pith-number/G4FANCBKAMLPBGR5JGM7ZRJEYT/graph.json","fetch_events":"https://pith.science/api/pith-number/G4FANCBKAMLPBGR5JGM7ZRJEYT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT/action/storage_attestation","attest_author":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT/action/author_attestation","sign_citation":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT/action/citation_signature","submit_replication":"https://pith.science/pith/G4FANCBKAMLPBGR5JGM7ZRJEYT/action/replication_record"}},"created_at":"2026-05-18T01:58:31.563734+00:00","updated_at":"2026-05-18T01:58:31.563734+00:00"}