{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:PGJPEZ5YINT6PBJROUZIV5D6PL","short_pith_number":"pith:PGJPEZ5Y","canonical_record":{"source":{"id":"0912.5020","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-12-26T14:31:22Z","cross_cats_sorted":[],"title_canon_sha256":"d96d94db5c7afb0717690414118e57f803290771e3c7167c3ee231c076836216","abstract_canon_sha256":"4450e60a7a17db3201ecbc78dbc1fcb0f83ba3b655e1c15d946fcf4b15029db8"},"schema_version":"1.0"},"canonical_sha256":"7992f267b84367e7853175328af47e7ac6a476136347b2752a5ed43b3828ab98","source":{"kind":"arxiv","id":"0912.5020","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.5020","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"arxiv_version","alias_value":"0912.5020v1","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.5020","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"pith_short_12","alias_value":"PGJPEZ5YINT6","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"PGJPEZ5YINT6PBJR","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"PGJPEZ5Y","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:PGJPEZ5YINT6PBJROUZIV5D6PL","target":"record","payload":{"canonical_record":{"source":{"id":"0912.5020","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-12-26T14:31:22Z","cross_cats_sorted":[],"title_canon_sha256":"d96d94db5c7afb0717690414118e57f803290771e3c7167c3ee231c076836216","abstract_canon_sha256":"4450e60a7a17db3201ecbc78dbc1fcb0f83ba3b655e1c15d946fcf4b15029db8"},"schema_version":"1.0"},"canonical_sha256":"7992f267b84367e7853175328af47e7ac6a476136347b2752a5ed43b3828ab98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:13.657679Z","signature_b64":"HMV2AWVXOsTpHxW/Kprs6562M6LIHyjK1Uo0DSLRFwoFO52SueG7WGgdRbEsAiU9jUCgLylpXqGXvQ0VJIcCCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7992f267b84367e7853175328af47e7ac6a476136347b2752a5ed43b3828ab98","last_reissued_at":"2026-05-18T02:10:13.657018Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:13.657018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0912.5020","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":"2026-05-18T02:10:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m6wRfZSpMlOzKGskz2Tzwl/QnRhVICqRZm0LSU9Wo1kX0FAa1luIAkiOaLtT5vcqVJZMIOuv1J0Lw9J09zyfDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:22:07.646257Z"},"content_sha256":"051b3707b489cd3948a9365a1f26b8680a448d15907698c1ca14f37de4961786","schema_version":"1.0","event_id":"sha256:051b3707b489cd3948a9365a1f26b8680a448d15907698c1ca14f37de4961786"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:PGJPEZ5YINT6PBJROUZIV5D6PL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Suzaku X-Ray Imaging and Spectroscopy of Cassiopeia A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Bamba, E. A. Helder, E. Miyata, H. Kosugi, H. Matsumoto, H. Tsunemi, J. Hiraga, J. P. Hughes, J. Vink, K. Someya, K. Tamura, K. Totsuka, M. Ishida, M. Kokubun, N. Kodaka, R. Nakamura, R. Petre, S. Okada, S. S. Holt, T. Kamae, T. Kouzu, T. Takahashi, T. Tamagawa, Y. Ezoe, Y. Fukazawa, Y. Maeda, Y. Terada, Y. Tsuboi, Y. Uchiyama","submitted_at":"2009-12-26T14:31:22Z","abstract_excerpt":"Suzaku X-ray observations of a young supernova remnant, Cassiopeia A, were carried out. K-shell transition lines from highly ionized ions of various elements were detected, including Chromium (Cr-Kalpha at 5.61 keV). The X-ray continuum spectra were modeled in the 3.4--40 keV band, summed over the entire remnant, and were fitted with a simplest combination of the thermal bremsstrahlung and the non-thermal cut-off power-law models. The spectral fits with this assumption indicate that the continuum emission is likely to be dominated by the non-thermal emission with a cut-off energy at > 1 keV. T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.5020","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":"2026-05-18T02:10:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xjL3yUnlwb7bW0gSdw6hfJz4kAATriPJeTp8HlJ33y4FcbzOYmW0AGM5OgsCmYyfNpPbRj8WMkGJxao/gCXCDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:22:07.646727Z"},"content_sha256":"abb0605286f5279d3f3c21a5f693631470cfc035e0ed9fa4fc13a9420a85bb37","schema_version":"1.0","event_id":"sha256:abb0605286f5279d3f3c21a5f693631470cfc035e0ed9fa4fc13a9420a85bb37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PGJPEZ5YINT6PBJROUZIV5D6PL/bundle.json","state_url":"https://pith.science/pith/PGJPEZ5YINT6PBJROUZIV5D6PL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PGJPEZ5YINT6PBJROUZIV5D6PL/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":"2026-05-31T18:22:07Z","links":{"resolver":"https://pith.science/pith/PGJPEZ5YINT6PBJROUZIV5D6PL","bundle":"https://pith.science/pith/PGJPEZ5YINT6PBJROUZIV5D6PL/bundle.json","state":"https://pith.science/pith/PGJPEZ5YINT6PBJROUZIV5D6PL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PGJPEZ5YINT6PBJROUZIV5D6PL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:PGJPEZ5YINT6PBJROUZIV5D6PL","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":"4450e60a7a17db3201ecbc78dbc1fcb0f83ba3b655e1c15d946fcf4b15029db8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-12-26T14:31:22Z","title_canon_sha256":"d96d94db5c7afb0717690414118e57f803290771e3c7167c3ee231c076836216"},"schema_version":"1.0","source":{"id":"0912.5020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.5020","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"arxiv_version","alias_value":"0912.5020v1","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.5020","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"pith_short_12","alias_value":"PGJPEZ5YINT6","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"PGJPEZ5YINT6PBJR","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"PGJPEZ5Y","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:abb0605286f5279d3f3c21a5f693631470cfc035e0ed9fa4fc13a9420a85bb37","target":"graph","created_at":"2026-05-18T02:10:13Z","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":"Suzaku X-ray observations of a young supernova remnant, Cassiopeia A, were carried out. K-shell transition lines from highly ionized ions of various elements were detected, including Chromium (Cr-Kalpha at 5.61 keV). The X-ray continuum spectra were modeled in the 3.4--40 keV band, summed over the entire remnant, and were fitted with a simplest combination of the thermal bremsstrahlung and the non-thermal cut-off power-law models. The spectral fits with this assumption indicate that the continuum emission is likely to be dominated by the non-thermal emission with a cut-off energy at > 1 keV. T","authors_text":"A. Bamba, E. A. Helder, E. Miyata, H. Kosugi, H. Matsumoto, H. Tsunemi, J. Hiraga, J. P. Hughes, J. Vink, K. Someya, K. Tamura, K. Totsuka, M. Ishida, M. Kokubun, N. Kodaka, R. Nakamura, R. Petre, S. Okada, S. S. Holt, T. Kamae, T. Kouzu, T. Takahashi, T. Tamagawa, Y. Ezoe, Y. Fukazawa, Y. Maeda, Y. Terada, Y. Tsuboi, Y. Uchiyama","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-12-26T14:31:22Z","title":"Suzaku X-Ray Imaging and Spectroscopy of Cassiopeia A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.5020","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":"sha256:051b3707b489cd3948a9365a1f26b8680a448d15907698c1ca14f37de4961786","target":"record","created_at":"2026-05-18T02:10:13Z","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":"4450e60a7a17db3201ecbc78dbc1fcb0f83ba3b655e1c15d946fcf4b15029db8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-12-26T14:31:22Z","title_canon_sha256":"d96d94db5c7afb0717690414118e57f803290771e3c7167c3ee231c076836216"},"schema_version":"1.0","source":{"id":"0912.5020","kind":"arxiv","version":1}},"canonical_sha256":"7992f267b84367e7853175328af47e7ac6a476136347b2752a5ed43b3828ab98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7992f267b84367e7853175328af47e7ac6a476136347b2752a5ed43b3828ab98","first_computed_at":"2026-05-18T02:10:13.657018Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:13.657018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HMV2AWVXOsTpHxW/Kprs6562M6LIHyjK1Uo0DSLRFwoFO52SueG7WGgdRbEsAiU9jUCgLylpXqGXvQ0VJIcCCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:13.657679Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.5020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:051b3707b489cd3948a9365a1f26b8680a448d15907698c1ca14f37de4961786","sha256:abb0605286f5279d3f3c21a5f693631470cfc035e0ed9fa4fc13a9420a85bb37"],"state_sha256":"a1485202b7f6a25d40a6cd22d191e3f0bc1288c1026ac46a8be3916903e98bc8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dD8y0fZfIqsWiB4CVqj+/KqMrHLYY2Kcxja/h06/Z+5SeA4GXA8XFVZ4ryQCJhZWcjPWl/37j0cJREoiMvy1CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T18:22:07.649633Z","bundle_sha256":"dd7f0b60c33542b983cd479ba9f4ab7e4f10b8fb201d888a2789cf65f8f0166e"}}