{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:MN2JZ5UZKBT5U6G55ZKE6JKDCH","short_pith_number":"pith:MN2JZ5UZ","canonical_record":{"source":{"id":"0706.4146","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2007-06-28T05:01:57Z","cross_cats_sorted":[],"title_canon_sha256":"370e24f395e432821d1a8bd2b1f121a40f16765fdba8ac4972d0f16fa1b49ea1","abstract_canon_sha256":"9d814c1fa82fa0dc32022445847310ffc3335759333f85f68253bc6910d9eb48"},"schema_version":"1.0"},"canonical_sha256":"63749cf6995067da78ddee544f254311e77c384708f8b4c06ec6f53020d029a6","source":{"kind":"arxiv","id":"0706.4146","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.4146","created_at":"2026-05-18T00:52:42Z"},{"alias_kind":"arxiv_version","alias_value":"0706.4146v2","created_at":"2026-05-18T00:52:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.4146","created_at":"2026-05-18T00:52:42Z"},{"alias_kind":"pith_short_12","alias_value":"MN2JZ5UZKBT5","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"MN2JZ5UZKBT5U6G5","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"MN2JZ5UZ","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:MN2JZ5UZKBT5U6G55ZKE6JKDCH","target":"record","payload":{"canonical_record":{"source":{"id":"0706.4146","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2007-06-28T05:01:57Z","cross_cats_sorted":[],"title_canon_sha256":"370e24f395e432821d1a8bd2b1f121a40f16765fdba8ac4972d0f16fa1b49ea1","abstract_canon_sha256":"9d814c1fa82fa0dc32022445847310ffc3335759333f85f68253bc6910d9eb48"},"schema_version":"1.0"},"canonical_sha256":"63749cf6995067da78ddee544f254311e77c384708f8b4c06ec6f53020d029a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:42.684657Z","signature_b64":"sDZUSjjJRdftsDEnbMaunSQ0ckqlObZuAMFK2Dp+VL6X1AQ8dl3zSV4qilMfs6Vkq5wTZ1D+V7Wz+dpi0sP2Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"63749cf6995067da78ddee544f254311e77c384708f8b4c06ec6f53020d029a6","last_reissued_at":"2026-05-18T00:52:42.684064Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:42.684064Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.4146","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:52:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"//lhy9NcOljSF9N7gjkKoilgWDE4E1bDxnx/KtSgbi99d2WydRp2h65RnI4HreLsmVuE/g/9oPS7ODctTgakAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:03:16.621624Z"},"content_sha256":"a714ec3b369cad7d5fe0127c187ce199d9a0a52e71ea3dc0ba5cf563531a461f","schema_version":"1.0","event_id":"sha256:a714ec3b369cad7d5fe0127c187ce199d9a0a52e71ea3dc0ba5cf563531a461f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:MN2JZ5UZKBT5U6G55ZKE6JKDCH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-Ray Spectroscopy of SN 1006 with Suzaku","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Aya Bamba, Hiroshi Nakajima, Hiroya Yamaguchi, John P. Hughes, Junko S. Hiraga, Katsuji Koyama, Koji Mori, Masanobu Ozaki, Satoru Katsuda, Takeshi Go Tsuru","submitted_at":"2007-06-28T05:01:57Z","abstract_excerpt":"We report on observations of SN 1006 with the X-ray Imaging Spectrometers (XIS) on board Suzaku. We firmly detected K-shell emission from Fe, for the first time, and find that the Fe ionization state is quite low. The broad band spectrum extracted from the southeast of the remnant is well fitted with a model consisting of three optically thin thermal non-equilibrium ionization plasmas and a power-law component. Two of the thermal models are highly overabundant in heavy elements and, hence, are likely due to ejecta. These components have different ionization parameters: $n_et \\sim 1.4\\times 10^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.4146","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":""},"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":"2026-05-18T00:52:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tASXN8oIhTUuw8VLPsK+yptPlbZmuGrpZNMU5DOBXo6Hy4BRc90+6u2BcPKUygwCXAdOo5wTUDnzLrg2wSXnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:03:16.622175Z"},"content_sha256":"d888fd9b7fdcc20bca1f6128d51bc9773f6b077c3b43bf40b09c9f3924550b4e","schema_version":"1.0","event_id":"sha256:d888fd9b7fdcc20bca1f6128d51bc9773f6b077c3b43bf40b09c9f3924550b4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH/bundle.json","state_url":"https://pith.science/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH/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":"2026-05-30T11:03:16Z","links":{"resolver":"https://pith.science/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH","bundle":"https://pith.science/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH/bundle.json","state":"https://pith.science/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MN2JZ5UZKBT5U6G55ZKE6JKDCH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:MN2JZ5UZKBT5U6G55ZKE6JKDCH","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":"9d814c1fa82fa0dc32022445847310ffc3335759333f85f68253bc6910d9eb48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2007-06-28T05:01:57Z","title_canon_sha256":"370e24f395e432821d1a8bd2b1f121a40f16765fdba8ac4972d0f16fa1b49ea1"},"schema_version":"1.0","source":{"id":"0706.4146","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.4146","created_at":"2026-05-18T00:52:42Z"},{"alias_kind":"arxiv_version","alias_value":"0706.4146v2","created_at":"2026-05-18T00:52:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.4146","created_at":"2026-05-18T00:52:42Z"},{"alias_kind":"pith_short_12","alias_value":"MN2JZ5UZKBT5","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"MN2JZ5UZKBT5U6G5","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"MN2JZ5UZ","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:d888fd9b7fdcc20bca1f6128d51bc9773f6b077c3b43bf40b09c9f3924550b4e","target":"graph","created_at":"2026-05-18T00:52:42Z","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 on observations of SN 1006 with the X-ray Imaging Spectrometers (XIS) on board Suzaku. We firmly detected K-shell emission from Fe, for the first time, and find that the Fe ionization state is quite low. The broad band spectrum extracted from the southeast of the remnant is well fitted with a model consisting of three optically thin thermal non-equilibrium ionization plasmas and a power-law component. Two of the thermal models are highly overabundant in heavy elements and, hence, are likely due to ejecta. These components have different ionization parameters: $n_et \\sim 1.4\\times 10^","authors_text":"Aya Bamba, Hiroshi Nakajima, Hiroya Yamaguchi, John P. Hughes, Junko S. Hiraga, Katsuji Koyama, Koji Mori, Masanobu Ozaki, Satoru Katsuda, Takeshi Go Tsuru","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2007-06-28T05:01:57Z","title":"X-Ray Spectroscopy of SN 1006 with Suzaku"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.4146","kind":"arxiv","version":2},"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:a714ec3b369cad7d5fe0127c187ce199d9a0a52e71ea3dc0ba5cf563531a461f","target":"record","created_at":"2026-05-18T00:52:42Z","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":"9d814c1fa82fa0dc32022445847310ffc3335759333f85f68253bc6910d9eb48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2007-06-28T05:01:57Z","title_canon_sha256":"370e24f395e432821d1a8bd2b1f121a40f16765fdba8ac4972d0f16fa1b49ea1"},"schema_version":"1.0","source":{"id":"0706.4146","kind":"arxiv","version":2}},"canonical_sha256":"63749cf6995067da78ddee544f254311e77c384708f8b4c06ec6f53020d029a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"63749cf6995067da78ddee544f254311e77c384708f8b4c06ec6f53020d029a6","first_computed_at":"2026-05-18T00:52:42.684064Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:42.684064Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sDZUSjjJRdftsDEnbMaunSQ0ckqlObZuAMFK2Dp+VL6X1AQ8dl3zSV4qilMfs6Vkq5wTZ1D+V7Wz+dpi0sP2Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:42.684657Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.4146","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a714ec3b369cad7d5fe0127c187ce199d9a0a52e71ea3dc0ba5cf563531a461f","sha256:d888fd9b7fdcc20bca1f6128d51bc9773f6b077c3b43bf40b09c9f3924550b4e"],"state_sha256":"bc8b4dc6ec720c2edde2c72c9efabaf3e421d6e87b714e37d78d7e84daf656da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8gU8ErPK0GsK6m0Lai6qd1hdmEcgiLiLPkm9ZbuIyDrpLGsVB/lEfXbN+zHT9fjT2xlbJiZVkjsKqv6QSBiACg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:03:16.625345Z","bundle_sha256":"cfe960f0f0f5111525fcf481256e44140895efa1cde8bd451b74619a502a1356"}}