{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:XAD5Y3IY4WXIIDX3KXNMOQSD4Q","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":"f5da899ba56bd4b61db07cab9fc689d683e63909bbdac47e1b0207e049220190","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-28T23:23:15Z","title_canon_sha256":"9f2d03f0a7a1bf699e61ddc792a4072439bc38e7d11ea25b31b5c939380d0a21"},"schema_version":"1.0","source":{"id":"0910.5520","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.5520","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"arxiv_version","alias_value":"0910.5520v1","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.5520","created_at":"2026-05-18T03:48:02Z"},{"alias_kind":"pith_short_12","alias_value":"XAD5Y3IY4WXI","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"XAD5Y3IY4WXIIDX3","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"XAD5Y3IY","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:7265b0f552d006458ff8b447b14e5135d591ccae62a01d3ca3acf1be87167b92","target":"graph","created_at":"2026-05-18T03:48:02Z","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":"The first results from observations of the high mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent with the binary period, with the emission being modulated with a period of 3.903 +/- 0.005 days; the first detection of this modulation at GeV energies. The light curve is characterized by a broad peak around superior conjunction in agreement with inverse Compton scattering models. The spectrum is represented by a power law with an exponential cutoff, yielding an overall flux","authors_text":"The Fermi LAT collaboration","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-28T23:23:15Z","title":"Fermi LAT Observations of LS 5039"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.5520","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":"sha256:3e9692fa9b72d34ebac324d3a20ff81407c0edb6e91b1af3a041f101d1ae1c5d","target":"record","created_at":"2026-05-18T03:48:02Z","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":"f5da899ba56bd4b61db07cab9fc689d683e63909bbdac47e1b0207e049220190","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-28T23:23:15Z","title_canon_sha256":"9f2d03f0a7a1bf699e61ddc792a4072439bc38e7d11ea25b31b5c939380d0a21"},"schema_version":"1.0","source":{"id":"0910.5520","kind":"arxiv","version":1}},"canonical_sha256":"b807dc6d18e5ae840efb55dac74243e435e339eb0c05cd807b3ac41ee3c911da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b807dc6d18e5ae840efb55dac74243e435e339eb0c05cd807b3ac41ee3c911da","first_computed_at":"2026-05-18T03:48:02.123383Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:48:02.123383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6p1llkPzJdlPilzmgvo61Lh8HQRP60cVvaxcczUDupbh6p50VtHWZD17hfXuZc2xYP9/F1oSBtkZSIlVM95UBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:48:02.124088Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.5520","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e9692fa9b72d34ebac324d3a20ff81407c0edb6e91b1af3a041f101d1ae1c5d","sha256:7265b0f552d006458ff8b447b14e5135d591ccae62a01d3ca3acf1be87167b92"],"state_sha256":"b2446b3dec33a2a5e1e61c237c0cf39dd1b3c91dcbf73ba592a208800ef5099f"}