{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:SIRELAC77AJVR55DRTDVAIDQJ6","short_pith_number":"pith:SIRELAC7","schema_version":"1.0","canonical_sha256":"922245805ff81358f7a38cc75020704fbe184da017f46a566a4bec7cd134f8c0","source":{"kind":"arxiv","id":"0801.2300","version":2},"attestation_state":"computed","paper":{"title":"X-ray variability of NGC 2516 stars in the XMM-Newton observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Marino, G. Micela, G. Peres, I. Pillitteri","submitted_at":"2008-01-15T14:03:22Z","abstract_excerpt":"We present the characteristics of the X-ray variability of stars in the cluster NGC2516 as derived from XMM-Newton/EPIC/pn data. The X-ray variations on short (hours), medium (months), and long (years) time scales have been explored. We detected 303 distinct X-ray sources by analysing six EPIC/pn observations; 194 of them are members of the cluster. Stars of all spectral types, from the early-types to the late-M dwarfs, were detected. The Kolmogorov-Smirnov test applied to the X-ray photon time series shows that, on short time scales, only a relatively small fraction (ranging from 6% to 31% fo"},"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":"0801.2300","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-15T14:03:22Z","cross_cats_sorted":[],"title_canon_sha256":"86af3ba48d3c4028f52cb9945b51c3c0f72c49cde5d8262477ca6da978ad0657","abstract_canon_sha256":"4478de8f3a7ff84f87f99b61e230f2b7a00cc8c9c7d471956373850efc72e419"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:45:00.525782Z","signature_b64":"HanqFdIsnMGavAgGpvhu6OEy4cQiC3s2fcGnU6ZjpQT33e3Tdhw+6eVgrhL+GGipr12S3Az3dcq3p3ZOmKU3Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"922245805ff81358f7a38cc75020704fbe184da017f46a566a4bec7cd134f8c0","last_reissued_at":"2026-07-04T15:45:00.525312Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:45:00.525312Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-ray variability of NGC 2516 stars in the XMM-Newton observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Marino, G. Micela, G. Peres, I. Pillitteri","submitted_at":"2008-01-15T14:03:22Z","abstract_excerpt":"We present the characteristics of the X-ray variability of stars in the cluster NGC2516 as derived from XMM-Newton/EPIC/pn data. The X-ray variations on short (hours), medium (months), and long (years) time scales have been explored. We detected 303 distinct X-ray sources by analysing six EPIC/pn observations; 194 of them are members of the cluster. Stars of all spectral types, from the early-types to the late-M dwarfs, were detected. The Kolmogorov-Smirnov test applied to the X-ray photon time series shows that, on short time scales, only a relatively small fraction (ranging from 6% to 31% fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.2300","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0801.2300/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0801.2300","created_at":"2026-07-04T15:45:00.525393+00:00"},{"alias_kind":"arxiv_version","alias_value":"0801.2300v2","created_at":"2026-07-04T15:45:00.525393+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.2300","created_at":"2026-07-04T15:45:00.525393+00:00"},{"alias_kind":"pith_short_12","alias_value":"SIRELAC77AJV","created_at":"2026-07-04T15:45:00.525393+00:00"},{"alias_kind":"pith_short_16","alias_value":"SIRELAC77AJVR55D","created_at":"2026-07-04T15:45:00.525393+00:00"},{"alias_kind":"pith_short_8","alias_value":"SIRELAC7","created_at":"2026-07-04T15:45:00.525393+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/SIRELAC77AJVR55DRTDVAIDQJ6","json":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6.json","graph_json":"https://pith.science/api/pith-number/SIRELAC77AJVR55DRTDVAIDQJ6/graph.json","events_json":"https://pith.science/api/pith-number/SIRELAC77AJVR55DRTDVAIDQJ6/events.json","paper":"https://pith.science/paper/SIRELAC7"},"agent_actions":{"view_html":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6","download_json":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6.json","view_paper":"https://pith.science/paper/SIRELAC7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0801.2300&json=true","fetch_graph":"https://pith.science/api/pith-number/SIRELAC77AJVR55DRTDVAIDQJ6/graph.json","fetch_events":"https://pith.science/api/pith-number/SIRELAC77AJVR55DRTDVAIDQJ6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6/action/storage_attestation","attest_author":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6/action/author_attestation","sign_citation":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6/action/citation_signature","submit_replication":"https://pith.science/pith/SIRELAC77AJVR55DRTDVAIDQJ6/action/replication_record"}},"created_at":"2026-07-04T15:45:00.525393+00:00","updated_at":"2026-07-04T15:45:00.525393+00:00"}