{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:ECLXLMF3DOGZSLIOOFL3SHX2IG","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":"44d8b3e696e1ecc78baafbf907c630d46a5d80816b470e0b327ee23e205ead66","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-02-01T17:23:10Z","title_canon_sha256":"8a53b9682005848612ca8e830b385cc528c9ccaa57108da3c191077c6851d3e1"},"schema_version":"1.0","source":{"id":"astro-ph/9902021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9902021","created_at":"2026-07-04T23:57:17Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9902021v1","created_at":"2026-07-04T23:57:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9902021","created_at":"2026-07-04T23:57:17Z"},{"alias_kind":"pith_short_12","alias_value":"ECLXLMF3DOGZ","created_at":"2026-07-04T23:57:17Z"},{"alias_kind":"pith_short_16","alias_value":"ECLXLMF3DOGZSLIO","created_at":"2026-07-04T23:57:17Z"},{"alias_kind":"pith_short_8","alias_value":"ECLXLMF3","created_at":"2026-07-04T23:57:17Z"}],"graph_snapshots":[{"event_id":"sha256:60b7bfac87e56e2c0b0be0e1e866bef77ddd8f8acddc35dd7a411bbbcc38ba03","target":"graph","created_at":"2026-07-04T23:57:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/9902021/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"New BeppoSAX observations of the nearby prototypical starburst galaxies NGC 253 and M82 are presented. A companion paper (Cappi et al. 1998;astro-ph/9809325) shows that the hard (2-10 keV) spectrum of both galaxies, extracted from the source central regions, is best described by a thermal emission model with kT ~ 6-9 keV and abundances ~ 0.1-0.3 solar. The spatial analysis yields clear evidence that this emission is extended in NGC 253, and possibly also in M82. This quite clearly rules out a LLAGN as the main responsible for their hard X-ray emission. Significant contribution from point-sourc","authors_text":"A. Franceschini, A.J. Dean, A. Spizzichino, Bologna), E. Palazzi, F. Matteucci, G. DiCocco, G.G.C. Palumbo, L. Bassani, L. Danese, L.K. Hunt, M. Cappi (Istituto TeSRE-CNR, M. Persic, P. Salucci, S. Mariani, S. Molendi, Y. Rephaeli","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-02-01T17:23:10Z","title":"Diffuse Thermal Emission from Very Hot Gas in Starburst Galaxies: Spatial Results"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9902021","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":"sha256:963008e185eb6463df5f22f082ce360281a806e51accdd4988d2b76c2706c613","target":"record","created_at":"2026-07-04T23:57:17Z","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":"44d8b3e696e1ecc78baafbf907c630d46a5d80816b470e0b327ee23e205ead66","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-02-01T17:23:10Z","title_canon_sha256":"8a53b9682005848612ca8e830b385cc528c9ccaa57108da3c191077c6851d3e1"},"schema_version":"1.0","source":{"id":"astro-ph/9902021","kind":"arxiv","version":1}},"canonical_sha256":"209775b0bb1b8d992d0e7157b91efa418fe06dbe96abb86dfc31ffee4fb9011f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"209775b0bb1b8d992d0e7157b91efa418fe06dbe96abb86dfc31ffee4fb9011f","first_computed_at":"2026-07-04T23:57:17.706605Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:57:17.706605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W3NiUzK9R6w+1raNCnMxrT45Wpsw/H7y6SZaRcH8jccbpnk0uAVG5me2WC99JbDv87hGYtZoHFU9crOR3crnBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T23:57:17.707066Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9902021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:963008e185eb6463df5f22f082ce360281a806e51accdd4988d2b76c2706c613","sha256:60b7bfac87e56e2c0b0be0e1e866bef77ddd8f8acddc35dd7a411bbbcc38ba03"],"state_sha256":"32d0d67004ef787e1c36b655f4e5890a84728ed346be08f2cc2d077f39126365"}