{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:B755ANRZHOF7VX7EYHERCVBFMY","short_pith_number":"pith:B755ANRZ","canonical_record":{"source":{"id":"astro-ph/0312625","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-26T11:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"a794a64285ae6246839a2c50951c41b5fb2eae1456bcf448bca8eda868f992c4","abstract_canon_sha256":"be3bc63ff40be0f6ca9d5825a4033051222d6d73ea1ff7c7c1bdfb39d04ec2a3"},"schema_version":"1.0"},"canonical_sha256":"0ffbd036393b8bfadfe4c1c9115425663d1c367941ab8d6c9c48e56af4a0a63e","source":{"kind":"arxiv","id":"astro-ph/0312625","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312625","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312625v1","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312625","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"pith_short_12","alias_value":"B755ANRZHOF7","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"B755ANRZHOF7VX7E","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"B755ANRZ","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:B755ANRZHOF7VX7EYHERCVBFMY","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0312625","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-26T11:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"a794a64285ae6246839a2c50951c41b5fb2eae1456bcf448bca8eda868f992c4","abstract_canon_sha256":"be3bc63ff40be0f6ca9d5825a4033051222d6d73ea1ff7c7c1bdfb39d04ec2a3"},"schema_version":"1.0"},"canonical_sha256":"0ffbd036393b8bfadfe4c1c9115425663d1c367941ab8d6c9c48e56af4a0a63e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:37.558235Z","signature_b64":"zD1R7OUC1LGJxpO6Tqy2m3OCNwzC6oiQvK0xsEJk4hQ2IuHLJDlhDE8tvDFVKNQp7zZjTu69L6AzIRJDilxSDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ffbd036393b8bfadfe4c1c9115425663d1c367941ab8d6c9c48e56af4a0a63e","last_reissued_at":"2026-05-18T01:40:37.557624Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:37.557624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0312625","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:40:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qEvGWTa3L+VZw1pqUez5E04129EbfD4CyGy+Z6K+oG7Uu9pjTMJkjac9wULp6eU05UB9shUFjwdZ89GWdFY+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:57:38.106972Z"},"content_sha256":"0b3d337d34e0a1e4e0402cbeb7011cc7199a638518ffc06894d4d38b643a5040","schema_version":"1.0","event_id":"sha256:0b3d337d34e0a1e4e0402cbeb7011cc7199a638518ffc06894d4d38b643a5040"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:B755ANRZHOF7VX7EYHERCVBFMY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Confirmation of non-thermal hard X-ray excess in the Coma cluster from two epoch observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"3), 3) ((1) IASF/CNR Rome; (2) IASF/CNR Bologna; (3) IRA/CNR Bologna; (4) Astronomy Dept, Bologna Univ), Gabriele Giovannini (4, Giancarlo Setti (4, Gianfranco Brunetti (3), Luigina Feretti (3), Mauro Orlandini (2), Paola Grandi (2), Roberto Fusco-Femiano (1)","submitted_at":"2003-12-26T11:06:51Z","abstract_excerpt":"We report the hard X-ray spectrum of the Coma cluster obtained using the PDS data of two independent BeppoSAX observations performed with a time interval of about three years. In both the spectra a non thermal excess with respect to the thermal emission is present at a confidence level of ~ 3.4 sigma. The combined spectrum obtained by adding up the two spectra allows a measurement of the excess at the level of ~ 4.8 sigma at energies above 20 keV. The analysis of the full BeppoSAX data set provides a revised non-thermal X-ray flux which is slightly lower than that previously estimated (Fusco-F"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312625","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:40:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zp+/qyfrpu0hvGNMl3yQ3LXiDXDi1dV4h5alI/BjY3Feog3w30eGwbZTLseYIPnxvNPIjd4q0ZLG42NyNEyfAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:57:38.107646Z"},"content_sha256":"4cce952baf54df1eb6859b8c7e21e6b443479a8ed334e573d31b1758d04ba30a","schema_version":"1.0","event_id":"sha256:4cce952baf54df1eb6859b8c7e21e6b443479a8ed334e573d31b1758d04ba30a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B755ANRZHOF7VX7EYHERCVBFMY/bundle.json","state_url":"https://pith.science/pith/B755ANRZHOF7VX7EYHERCVBFMY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B755ANRZHOF7VX7EYHERCVBFMY/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T16:57:38Z","links":{"resolver":"https://pith.science/pith/B755ANRZHOF7VX7EYHERCVBFMY","bundle":"https://pith.science/pith/B755ANRZHOF7VX7EYHERCVBFMY/bundle.json","state":"https://pith.science/pith/B755ANRZHOF7VX7EYHERCVBFMY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B755ANRZHOF7VX7EYHERCVBFMY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:B755ANRZHOF7VX7EYHERCVBFMY","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":"be3bc63ff40be0f6ca9d5825a4033051222d6d73ea1ff7c7c1bdfb39d04ec2a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-26T11:06:51Z","title_canon_sha256":"a794a64285ae6246839a2c50951c41b5fb2eae1456bcf448bca8eda868f992c4"},"schema_version":"1.0","source":{"id":"astro-ph/0312625","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312625","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312625v1","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312625","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"pith_short_12","alias_value":"B755ANRZHOF7","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"B755ANRZHOF7VX7E","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"B755ANRZ","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:4cce952baf54df1eb6859b8c7e21e6b443479a8ed334e573d31b1758d04ba30a","target":"graph","created_at":"2026-05-18T01:40:37Z","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":"We report the hard X-ray spectrum of the Coma cluster obtained using the PDS data of two independent BeppoSAX observations performed with a time interval of about three years. In both the spectra a non thermal excess with respect to the thermal emission is present at a confidence level of ~ 3.4 sigma. The combined spectrum obtained by adding up the two spectra allows a measurement of the excess at the level of ~ 4.8 sigma at energies above 20 keV. The analysis of the full BeppoSAX data set provides a revised non-thermal X-ray flux which is slightly lower than that previously estimated (Fusco-F","authors_text":"3), 3) ((1) IASF/CNR Rome; (2) IASF/CNR Bologna; (3) IRA/CNR Bologna; (4) Astronomy Dept, Bologna Univ), Gabriele Giovannini (4, Giancarlo Setti (4, Gianfranco Brunetti (3), Luigina Feretti (3), Mauro Orlandini (2), Paola Grandi (2), Roberto Fusco-Femiano (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-12-26T11:06:51Z","title":"Confirmation of non-thermal hard X-ray excess in the Coma cluster from two epoch observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312625","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":"sha256:0b3d337d34e0a1e4e0402cbeb7011cc7199a638518ffc06894d4d38b643a5040","target":"record","created_at":"2026-05-18T01:40:37Z","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":"be3bc63ff40be0f6ca9d5825a4033051222d6d73ea1ff7c7c1bdfb39d04ec2a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-26T11:06:51Z","title_canon_sha256":"a794a64285ae6246839a2c50951c41b5fb2eae1456bcf448bca8eda868f992c4"},"schema_version":"1.0","source":{"id":"astro-ph/0312625","kind":"arxiv","version":1}},"canonical_sha256":"0ffbd036393b8bfadfe4c1c9115425663d1c367941ab8d6c9c48e56af4a0a63e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ffbd036393b8bfadfe4c1c9115425663d1c367941ab8d6c9c48e56af4a0a63e","first_computed_at":"2026-05-18T01:40:37.557624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:37.557624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zD1R7OUC1LGJxpO6Tqy2m3OCNwzC6oiQvK0xsEJk4hQ2IuHLJDlhDE8tvDFVKNQp7zZjTu69L6AzIRJDilxSDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:37.558235Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0312625","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b3d337d34e0a1e4e0402cbeb7011cc7199a638518ffc06894d4d38b643a5040","sha256:4cce952baf54df1eb6859b8c7e21e6b443479a8ed334e573d31b1758d04ba30a"],"state_sha256":"4fa48f10939df9bd01627b80b1a15acbe5c63d365b491f80709f3e4234cc349e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMPJ/MlHUdifSwfslVambxaVbuex2TqcFI7/MAb7GpMS6ZacZ1TBkitruixQffjPpfyTuXoOc4MtibWPrQI4Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T16:57:38.111469Z","bundle_sha256":"79718a02e2d43d4d5a1e810b202f63688ae14d63e60ad784881d6ebcd19b5ec3"}}