{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:XZ2OXAOZTKRULQVOL2AMB4EGXL","short_pith_number":"pith:XZ2OXAOZ","canonical_record":{"source":{"id":"1412.3122","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-09T21:26:54Z","cross_cats_sorted":[],"title_canon_sha256":"ab4574991ac21aa9f9b3164129b607347fed3b3af1d7f70b5c6f07d24d68bc1e","abstract_canon_sha256":"f487727b4b1bd03513060850f7e9d290e49bb1c6a9c37bcee2e4579ab670aa1e"},"schema_version":"1.0"},"canonical_sha256":"be74eb81d99aa345c2ae5e80c0f086bade9b6194791b82ef59c87ff5f1b5d72f","source":{"kind":"arxiv","id":"1412.3122","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.3122","created_at":"2026-05-18T01:41:20Z"},{"alias_kind":"arxiv_version","alias_value":"1412.3122v2","created_at":"2026-05-18T01:41:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.3122","created_at":"2026-05-18T01:41:20Z"},{"alias_kind":"pith_short_12","alias_value":"XZ2OXAOZTKRU","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XZ2OXAOZTKRULQVO","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XZ2OXAOZ","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:XZ2OXAOZTKRULQVOL2AMB4EGXL","target":"record","payload":{"canonical_record":{"source":{"id":"1412.3122","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-09T21:26:54Z","cross_cats_sorted":[],"title_canon_sha256":"ab4574991ac21aa9f9b3164129b607347fed3b3af1d7f70b5c6f07d24d68bc1e","abstract_canon_sha256":"f487727b4b1bd03513060850f7e9d290e49bb1c6a9c37bcee2e4579ab670aa1e"},"schema_version":"1.0"},"canonical_sha256":"be74eb81d99aa345c2ae5e80c0f086bade9b6194791b82ef59c87ff5f1b5d72f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:20.262389Z","signature_b64":"VNnjJdfKcSJJl3i/Eeb0Bn4K5VoXQ9azdZM7Yoqw6hupndGli1MNhOBCee/MEQYedZGkIJDz5hXvlhrnJG2SBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"be74eb81d99aa345c2ae5e80c0f086bade9b6194791b82ef59c87ff5f1b5d72f","last_reissued_at":"2026-05-18T01:41:20.261982Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:20.261982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.3122","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":"2026-05-18T01:41:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3S4aGQwg3wcNXSrAI8pOZQKeSCmgNhdFpJWAE239A339bFg2WB0gcrxpBsyVgTec6TYn9rZstk0A/8LfCRlKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T23:27:45.223388Z"},"content_sha256":"826eeb00a53df5bf754309515e5bdfb1be5ae362890e81ad34427d7d4a88ca48","schema_version":"1.0","event_id":"sha256:826eeb00a53df5bf754309515e5bdfb1be5ae362890e81ad34427d7d4a88ca48"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:XZ2OXAOZTKRULQVOL2AMB4EGXL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A 3D Kinematic Study of the Northern Ejecta \"Jet\" of the Crab Nebula","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Christine S. Black, Robert A. Fesen","submitted_at":"2014-12-09T21:26:54Z","abstract_excerpt":"We present [O III] 4959,5007 emission line spectra (FWHM = 40 km/s) of the Crab Nebula's northern ejecta `jet'. These data, along with a recent [O III] image of the Crab, are used to build 3-dimensional models of the jet and adjacent remnant nebulosity to better understand the jet's properties and possible formation. We find that the jet's radial velocities range from -190 to +480 km/s with transverse velocities from 1600 to 2650 km/s from base to tip. The jet appears virtually hollow in [O III] emission with the exception of some material at the jet's base where the it connects with the remna"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.3122","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":"2026-05-18T01:41:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iWi/Uv13VCG+WVx3TkeL910et2OdyECXnnIeU/apKyzOHKWL7sH2SkKWOAhRnhDF4QllrsAZca+hJvO1BNx/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T23:27:45.223865Z"},"content_sha256":"987250fdb7d5e3c20c7adcaf2d3e5ff9578612ebe0f041d4806cd993deb062aa","schema_version":"1.0","event_id":"sha256:987250fdb7d5e3c20c7adcaf2d3e5ff9578612ebe0f041d4806cd993deb062aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL/bundle.json","state_url":"https://pith.science/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL/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":"2026-06-05T23:27:45Z","links":{"resolver":"https://pith.science/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL","bundle":"https://pith.science/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL/bundle.json","state":"https://pith.science/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XZ2OXAOZTKRULQVOL2AMB4EGXL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XZ2OXAOZTKRULQVOL2AMB4EGXL","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":"f487727b4b1bd03513060850f7e9d290e49bb1c6a9c37bcee2e4579ab670aa1e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-09T21:26:54Z","title_canon_sha256":"ab4574991ac21aa9f9b3164129b607347fed3b3af1d7f70b5c6f07d24d68bc1e"},"schema_version":"1.0","source":{"id":"1412.3122","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.3122","created_at":"2026-05-18T01:41:20Z"},{"alias_kind":"arxiv_version","alias_value":"1412.3122v2","created_at":"2026-05-18T01:41:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.3122","created_at":"2026-05-18T01:41:20Z"},{"alias_kind":"pith_short_12","alias_value":"XZ2OXAOZTKRU","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XZ2OXAOZTKRULQVO","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XZ2OXAOZ","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:987250fdb7d5e3c20c7adcaf2d3e5ff9578612ebe0f041d4806cd993deb062aa","target":"graph","created_at":"2026-05-18T01:41:20Z","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 [O III] 4959,5007 emission line spectra (FWHM = 40 km/s) of the Crab Nebula's northern ejecta `jet'. These data, along with a recent [O III] image of the Crab, are used to build 3-dimensional models of the jet and adjacent remnant nebulosity to better understand the jet's properties and possible formation. We find that the jet's radial velocities range from -190 to +480 km/s with transverse velocities from 1600 to 2650 km/s from base to tip. The jet appears virtually hollow in [O III] emission with the exception of some material at the jet's base where the it connects with the remna","authors_text":"Christine S. Black, Robert A. Fesen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-09T21:26:54Z","title":"A 3D Kinematic Study of the Northern Ejecta \"Jet\" of the Crab Nebula"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.3122","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":"sha256:826eeb00a53df5bf754309515e5bdfb1be5ae362890e81ad34427d7d4a88ca48","target":"record","created_at":"2026-05-18T01:41:20Z","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":"f487727b4b1bd03513060850f7e9d290e49bb1c6a9c37bcee2e4579ab670aa1e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-12-09T21:26:54Z","title_canon_sha256":"ab4574991ac21aa9f9b3164129b607347fed3b3af1d7f70b5c6f07d24d68bc1e"},"schema_version":"1.0","source":{"id":"1412.3122","kind":"arxiv","version":2}},"canonical_sha256":"be74eb81d99aa345c2ae5e80c0f086bade9b6194791b82ef59c87ff5f1b5d72f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be74eb81d99aa345c2ae5e80c0f086bade9b6194791b82ef59c87ff5f1b5d72f","first_computed_at":"2026-05-18T01:41:20.261982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:20.261982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VNnjJdfKcSJJl3i/Eeb0Bn4K5VoXQ9azdZM7Yoqw6hupndGli1MNhOBCee/MEQYedZGkIJDz5hXvlhrnJG2SBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:20.262389Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.3122","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:826eeb00a53df5bf754309515e5bdfb1be5ae362890e81ad34427d7d4a88ca48","sha256:987250fdb7d5e3c20c7adcaf2d3e5ff9578612ebe0f041d4806cd993deb062aa"],"state_sha256":"ce32d3eb558001f15df0a017483405569a300332d1406b85039ec7152a89e7a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bC4bkuhErc0yNUdILMVPDBekhUkAj94WpCxCN2cwm6G+tWY5P8gYepfRWV0iXDF8KWlmgAOr8gJe8Vh7wsGzBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T23:27:45.226422Z","bundle_sha256":"f99081c8438f206fbb58bc5905651a8a96f3a5b1d909d26a9902a7860a5dd454"}}