{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:X2XCCFIBMXUEV4RL3M6WCOOEQQ","short_pith_number":"pith:X2XCCFIB","canonical_record":{"source":{"id":"1807.09622","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T14:14:00Z","cross_cats_sorted":[],"title_canon_sha256":"17e365adbaaf5871bdaf1817b1ceafa38cb990aba597e5e798549855eacd9faf","abstract_canon_sha256":"4e134230cfe3c71099df6c9e4ad3a7a3bfdd48788940b2ac3e31b1bb49eb1757"},"schema_version":"1.0"},"canonical_sha256":"beae21150165e84af22bdb3d6139c4840b3c7da4cda86c932daf4578aee7edf9","source":{"kind":"arxiv","id":"1807.09622","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09622","created_at":"2026-05-18T00:05:30Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09622v1","created_at":"2026-05-18T00:05:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09622","created_at":"2026-05-18T00:05:30Z"},{"alias_kind":"pith_short_12","alias_value":"X2XCCFIBMXUE","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"X2XCCFIBMXUEV4RL","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"X2XCCFIB","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:X2XCCFIBMXUEV4RL3M6WCOOEQQ","target":"record","payload":{"canonical_record":{"source":{"id":"1807.09622","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T14:14:00Z","cross_cats_sorted":[],"title_canon_sha256":"17e365adbaaf5871bdaf1817b1ceafa38cb990aba597e5e798549855eacd9faf","abstract_canon_sha256":"4e134230cfe3c71099df6c9e4ad3a7a3bfdd48788940b2ac3e31b1bb49eb1757"},"schema_version":"1.0"},"canonical_sha256":"beae21150165e84af22bdb3d6139c4840b3c7da4cda86c932daf4578aee7edf9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:30.266481Z","signature_b64":"RLaF0FjdmmNS703ch1OEfhwu0fxWBonjVVnERajtU2C8wR4SyIkib8gNruheXQZ7BgWBNp8TKKv229+9JCZFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"beae21150165e84af22bdb3d6139c4840b3c7da4cda86c932daf4578aee7edf9","last_reissued_at":"2026-05-18T00:05:30.266089Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:30.266089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.09622","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":"2026-05-18T00:05:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AJ2QzcmxNHUbYjozRQWrnNPZ/9q1xxBJUSJnlosRu9Dso0tDczuYDSKbl5shlK1s++ZQZWc5m4IqthsCX/d1AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:41:59.396813Z"},"content_sha256":"61592d35f1e7474c6e6b4f858ae762f5ebe898028645a7c8781d8abf4d047eee","schema_version":"1.0","event_id":"sha256:61592d35f1e7474c6e6b4f858ae762f5ebe898028645a7c8781d8abf4d047eee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:X2XCCFIBMXUEV4RL3M6WCOOEQQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatially resolved broad-band synchrotron emission from the non-thermal limbs of SN1006","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Anne Decourchelle, Fabio Acero, Jacco Vink, Jean Ballet, Jiang-Tao Li, Joel N. Bregman, Marco Miceli, Ping Zhou, Yang Chen","submitted_at":"2018-07-25T14:14:00Z","abstract_excerpt":"We present ~400ks NuSTAR observations of the northeast (NE) and southwest (SW) non-thermal limbs of the Galactic SNR SN1006. We discovered three sources with X-ray emission detected at >50keV. Two of them are identified as background AGN. We extract the NuSTAR spectra from a few regions along the non-thermal limbs and jointly analyze them with the XMM-Newton spectra and the radio data. The broad-band radio/X-ray spectra can be well described with a synchrotron emission model from a single population of CR electrons with a power law energy distribution and an exponential cutoff. The power law i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09622","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":"2026-05-18T00:05:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uZPpzkW5em2vYVpRTrIGI6KJlaaABxhhrHhI57XgEdcFwSbAGOAHjUvXJSrzS23E9zidX6HElYu5zZpXGe9QBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:41:59.397308Z"},"content_sha256":"800f6f5f2699c8552f2e8604fb148bcb48c3e66539c2bb7dd3c00696ebd9fc52","schema_version":"1.0","event_id":"sha256:800f6f5f2699c8552f2e8604fb148bcb48c3e66539c2bb7dd3c00696ebd9fc52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ/bundle.json","state_url":"https://pith.science/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ/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":"2026-05-26T19:41:59Z","links":{"resolver":"https://pith.science/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ","bundle":"https://pith.science/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ/bundle.json","state":"https://pith.science/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X2XCCFIBMXUEV4RL3M6WCOOEQQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:X2XCCFIBMXUEV4RL3M6WCOOEQQ","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":"4e134230cfe3c71099df6c9e4ad3a7a3bfdd48788940b2ac3e31b1bb49eb1757","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T14:14:00Z","title_canon_sha256":"17e365adbaaf5871bdaf1817b1ceafa38cb990aba597e5e798549855eacd9faf"},"schema_version":"1.0","source":{"id":"1807.09622","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09622","created_at":"2026-05-18T00:05:30Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09622v1","created_at":"2026-05-18T00:05:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09622","created_at":"2026-05-18T00:05:30Z"},{"alias_kind":"pith_short_12","alias_value":"X2XCCFIBMXUE","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"X2XCCFIBMXUEV4RL","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"X2XCCFIB","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:800f6f5f2699c8552f2e8604fb148bcb48c3e66539c2bb7dd3c00696ebd9fc52","target":"graph","created_at":"2026-05-18T00:05:30Z","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 present ~400ks NuSTAR observations of the northeast (NE) and southwest (SW) non-thermal limbs of the Galactic SNR SN1006. We discovered three sources with X-ray emission detected at >50keV. Two of them are identified as background AGN. We extract the NuSTAR spectra from a few regions along the non-thermal limbs and jointly analyze them with the XMM-Newton spectra and the radio data. The broad-band radio/X-ray spectra can be well described with a synchrotron emission model from a single population of CR electrons with a power law energy distribution and an exponential cutoff. The power law i","authors_text":"Anne Decourchelle, Fabio Acero, Jacco Vink, Jean Ballet, Jiang-Tao Li, Joel N. Bregman, Marco Miceli, Ping Zhou, Yang Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T14:14:00Z","title":"Spatially resolved broad-band synchrotron emission from the non-thermal limbs of SN1006"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09622","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":"sha256:61592d35f1e7474c6e6b4f858ae762f5ebe898028645a7c8781d8abf4d047eee","target":"record","created_at":"2026-05-18T00:05:30Z","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":"4e134230cfe3c71099df6c9e4ad3a7a3bfdd48788940b2ac3e31b1bb49eb1757","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T14:14:00Z","title_canon_sha256":"17e365adbaaf5871bdaf1817b1ceafa38cb990aba597e5e798549855eacd9faf"},"schema_version":"1.0","source":{"id":"1807.09622","kind":"arxiv","version":1}},"canonical_sha256":"beae21150165e84af22bdb3d6139c4840b3c7da4cda86c932daf4578aee7edf9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"beae21150165e84af22bdb3d6139c4840b3c7da4cda86c932daf4578aee7edf9","first_computed_at":"2026-05-18T00:05:30.266089Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:30.266089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RLaF0FjdmmNS703ch1OEfhwu0fxWBonjVVnERajtU2C8wR4SyIkib8gNruheXQZ7BgWBNp8TKKv229+9JCZFCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:30.266481Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.09622","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61592d35f1e7474c6e6b4f858ae762f5ebe898028645a7c8781d8abf4d047eee","sha256:800f6f5f2699c8552f2e8604fb148bcb48c3e66539c2bb7dd3c00696ebd9fc52"],"state_sha256":"b3008a3e83f8ccc9d325a5f781d0ff055e23a15ccf5c941fed80b3bd20f697fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h5TtBswRRJm2KJZ6iXkoFi92vR5xiyKiFFo3R3O8/47nxY/itkTS1d8NA1VQZWGM9sGCnGPT+fODRlVgwUzyAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T19:41:59.400549Z","bundle_sha256":"660abc22e7bd49f0bdd0066e66fc2253b552c05b419834109e7bdf67e1d59833"}}