{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PZ4VSJMMOXQGRAJ4IK34BCTOC4","short_pith_number":"pith:PZ4VSJMM","canonical_record":{"source":{"id":"1905.07222","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-17T12:22:10Z","cross_cats_sorted":[],"title_canon_sha256":"6f3a0800d98e34811233f1d5fea4787dd7c794453f5831ad9e0b6b9bb5507319","abstract_canon_sha256":"5582d650b080c4f5aff04e81a4a68d3b79cf9ab1269fef1b01524902e30372b3"},"schema_version":"1.0"},"canonical_sha256":"7e7959258c75e068813c42b7c08a6e17185d9987d515c01d9ebf7e42f0012b02","source":{"kind":"arxiv","id":"1905.07222","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.07222","created_at":"2026-05-17T23:45:56Z"},{"alias_kind":"arxiv_version","alias_value":"1905.07222v1","created_at":"2026-05-17T23:45:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.07222","created_at":"2026-05-17T23:45:56Z"},{"alias_kind":"pith_short_12","alias_value":"PZ4VSJMMOXQG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PZ4VSJMMOXQGRAJ4","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PZ4VSJMM","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PZ4VSJMMOXQGRAJ4IK34BCTOC4","target":"record","payload":{"canonical_record":{"source":{"id":"1905.07222","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-17T12:22:10Z","cross_cats_sorted":[],"title_canon_sha256":"6f3a0800d98e34811233f1d5fea4787dd7c794453f5831ad9e0b6b9bb5507319","abstract_canon_sha256":"5582d650b080c4f5aff04e81a4a68d3b79cf9ab1269fef1b01524902e30372b3"},"schema_version":"1.0"},"canonical_sha256":"7e7959258c75e068813c42b7c08a6e17185d9987d515c01d9ebf7e42f0012b02","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:56.137728Z","signature_b64":"6uPxWFh+JI5aM+YgW09Vr3u9ed5I5Iajcv43Nhj8DBDLjQN9yfZur/4cGVSbhm7J5ORX2zE4LArlIjeYAaqODg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e7959258c75e068813c42b7c08a6e17185d9987d515c01d9ebf7e42f0012b02","last_reissued_at":"2026-05-17T23:45:56.137163Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:56.137163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.07222","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":"2026-05-17T23:45:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HVF1niM1r1Sa6vEA6COpIUO5ZpA2x37StAdqxLxSJYRrvS1QQn98mo1rMp3IE4tvpZmXZuLbzVR0YCl3+d2HAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:20:07.561552Z"},"content_sha256":"b62d5b46d479d1b4bb815a13a15987f2190e45a0af2976a65acb4dd017e0dd45","schema_version":"1.0","event_id":"sha256:b62d5b46d479d1b4bb815a13a15987f2190e45a0af2976a65acb4dd017e0dd45"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PZ4VSJMMOXQGRAJ4IK34BCTOC4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneous Fitting of the Spectral Energy Density, Energy-dependent Size, and X-ray Spectral Index vs. Radius of The Young Pulsar Wind Nebula PWN G0.9+0.1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Carlo van Rensburg, Christo Venter","submitted_at":"2019-05-17T12:22:10Z","abstract_excerpt":"We have constructed and calibrated a spherically-symmetric, spatially-dependent particle transport and emission code for young pulsar wind nebulae (PWNe). This code predicts the spectral energy distribution (SED) of the radiation spectrum at different positions in a PWN, thus yielding the surface brightness vs. radius and hence the nebular size as function of energy. It also predicts the X-ray spectral index at different radii from the central pulsar, depending on the nebular B-field profile and particle transport properties. We apply the code to PWN G0.9+0.1 and fit these three functions conc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.07222","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":"2026-05-17T23:45:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x1ssC4Ei31Q2Ke1AoYiQGHtWBtf6kL6GbZs4kyGDZIQOQSfgNdGH280/SksbSksqYoPsHcox38Xw44KtObsVAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:20:07.561892Z"},"content_sha256":"c53fda04464b93d9e6b0cb975ac73bd3f4a2d4fe71df4edd024f4e1e054116e3","schema_version":"1.0","event_id":"sha256:c53fda04464b93d9e6b0cb975ac73bd3f4a2d4fe71df4edd024f4e1e054116e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4/bundle.json","state_url":"https://pith.science/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4/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":"2026-06-09T10:20:07Z","links":{"resolver":"https://pith.science/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4","bundle":"https://pith.science/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4/bundle.json","state":"https://pith.science/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PZ4VSJMMOXQGRAJ4IK34BCTOC4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PZ4VSJMMOXQGRAJ4IK34BCTOC4","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":"5582d650b080c4f5aff04e81a4a68d3b79cf9ab1269fef1b01524902e30372b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-17T12:22:10Z","title_canon_sha256":"6f3a0800d98e34811233f1d5fea4787dd7c794453f5831ad9e0b6b9bb5507319"},"schema_version":"1.0","source":{"id":"1905.07222","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.07222","created_at":"2026-05-17T23:45:56Z"},{"alias_kind":"arxiv_version","alias_value":"1905.07222v1","created_at":"2026-05-17T23:45:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.07222","created_at":"2026-05-17T23:45:56Z"},{"alias_kind":"pith_short_12","alias_value":"PZ4VSJMMOXQG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"PZ4VSJMMOXQGRAJ4","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"PZ4VSJMM","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:c53fda04464b93d9e6b0cb975ac73bd3f4a2d4fe71df4edd024f4e1e054116e3","target":"graph","created_at":"2026-05-17T23:45:56Z","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 have constructed and calibrated a spherically-symmetric, spatially-dependent particle transport and emission code for young pulsar wind nebulae (PWNe). This code predicts the spectral energy distribution (SED) of the radiation spectrum at different positions in a PWN, thus yielding the surface brightness vs. radius and hence the nebular size as function of energy. It also predicts the X-ray spectral index at different radii from the central pulsar, depending on the nebular B-field profile and particle transport properties. We apply the code to PWN G0.9+0.1 and fit these three functions conc","authors_text":"Carlo van Rensburg, Christo Venter","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-17T12:22:10Z","title":"Simultaneous Fitting of the Spectral Energy Density, Energy-dependent Size, and X-ray Spectral Index vs. Radius of The Young Pulsar Wind Nebula PWN G0.9+0.1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.07222","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:b62d5b46d479d1b4bb815a13a15987f2190e45a0af2976a65acb4dd017e0dd45","target":"record","created_at":"2026-05-17T23:45:56Z","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":"5582d650b080c4f5aff04e81a4a68d3b79cf9ab1269fef1b01524902e30372b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-17T12:22:10Z","title_canon_sha256":"6f3a0800d98e34811233f1d5fea4787dd7c794453f5831ad9e0b6b9bb5507319"},"schema_version":"1.0","source":{"id":"1905.07222","kind":"arxiv","version":1}},"canonical_sha256":"7e7959258c75e068813c42b7c08a6e17185d9987d515c01d9ebf7e42f0012b02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e7959258c75e068813c42b7c08a6e17185d9987d515c01d9ebf7e42f0012b02","first_computed_at":"2026-05-17T23:45:56.137163Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:56.137163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6uPxWFh+JI5aM+YgW09Vr3u9ed5I5Iajcv43Nhj8DBDLjQN9yfZur/4cGVSbhm7J5ORX2zE4LArlIjeYAaqODg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:56.137728Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.07222","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b62d5b46d479d1b4bb815a13a15987f2190e45a0af2976a65acb4dd017e0dd45","sha256:c53fda04464b93d9e6b0cb975ac73bd3f4a2d4fe71df4edd024f4e1e054116e3"],"state_sha256":"00aa9a7b5c4ee6e979a5a7a5e1f761fa4a805ed79447fd0c60ae65ba6f96f726"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pqTsb33ib6R9dMXsr5AfphWYbkJX38enum1WofxiPwc3fDMQpQ5YQooevEL636BotAMB6pLo6i7atjpSKSfeAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T10:20:07.563734Z","bundle_sha256":"7faba49f05e0dfffcb0b8ddcbd9cb6b8dc7781f7cb31eb7cc0dffd6506468361"}}