{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:UVAAMO6DJLPXX6VPLN2YVUE3DE","short_pith_number":"pith:UVAAMO6D","canonical_record":{"source":{"id":"1005.0800","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-05T17:54:01Z","cross_cats_sorted":[],"title_canon_sha256":"5240e4f2ca3d9ea1bc57340a6b252e2bbb8d4c0d45e90093c2ac847682a8c42f","abstract_canon_sha256":"ff22fc4b48856ea5329d10f10c35a1f1fb17649e8113c44d444c65e662414260"},"schema_version":"1.0"},"canonical_sha256":"a540063bc34adf7bfaaf5b758ad09b1904e8cd4f4bfd731141254e106a6b95bc","source":{"kind":"arxiv","id":"1005.0800","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.0800","created_at":"2026-05-18T02:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"1005.0800v2","created_at":"2026-05-18T02:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0800","created_at":"2026-05-18T02:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"UVAAMO6DJLPX","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UVAAMO6DJLPXX6VP","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UVAAMO6D","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:UVAAMO6DJLPXX6VPLN2YVUE3DE","target":"record","payload":{"canonical_record":{"source":{"id":"1005.0800","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-05T17:54:01Z","cross_cats_sorted":[],"title_canon_sha256":"5240e4f2ca3d9ea1bc57340a6b252e2bbb8d4c0d45e90093c2ac847682a8c42f","abstract_canon_sha256":"ff22fc4b48856ea5329d10f10c35a1f1fb17649e8113c44d444c65e662414260"},"schema_version":"1.0"},"canonical_sha256":"a540063bc34adf7bfaaf5b758ad09b1904e8cd4f4bfd731141254e106a6b95bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:42.600272Z","signature_b64":"5UWZ7edH6P6G41uvhgPjTjtWBb0VxVdclM19XzGn8F+UYVfwfJtibS3wANTOek+qyAzloruyxEDEBX37U1otBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a540063bc34adf7bfaaf5b758ad09b1904e8cd4f4bfd731141254e106a6b95bc","last_reissued_at":"2026-05-18T02:07:42.599517Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:42.599517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.0800","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":"2026-05-18T02:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jl2q9aeD/Tu7C2iZDfjpnGC/Z+WSJ5qFtWU5zLxEszhonkU3qTPxBOurpy1yfcC6GkKAs+EngrTl36y1G8EdCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:39:07.505184Z"},"content_sha256":"a7bc4ba06d671fca56c9d37f6e8e4531cd407598d19dcef583f1b49140a0aee8","schema_version":"1.0","event_id":"sha256:a7bc4ba06d671fca56c9d37f6e8e4531cd407598d19dcef583f1b49140a0aee8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:UVAAMO6DJLPXX6VPLN2YVUE3DE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Bright Molecular Core in a Crab Nebula Filament","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"E. D. Loh, G. J. Ferland, J. A. Baldwin","submitted_at":"2010-05-05T17:54:01Z","abstract_excerpt":"In a sub-arcsec near-infrared survey of the Crab Nebula using the new Spartan Infrared Camera, we have found several knots with high surface brightness in the H_2 2.12 micron line and a very large H_2 2.12 micron to Br-gamma ratio. The brightest of these knots has an intensity ratio I(H_2 2.12 micron)/I(Br-gamma) = 18+/-9, which we show sets a lower limit on the ratio of masses in the molecular and recombination (i.e. ionized) zones M_mol / M_rec >/- 0.9, and a total molecular mass within this single knot M_mol >/- 5E-5 M_sun. We argue that the knot discussed here probably is able to emit so s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0800","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":"2026-05-18T02:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Zy2xoWeYLJexuLAfW1Dj49ynoEj+9Y1fVn+p5e0lks06K1ct+GfR6Rr1S1lpB+gqLcAds2EtKG5g9wvvUfDAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:39:07.505539Z"},"content_sha256":"ce2459f09343ff684ab9c2344380eb6550b96f2c2730f5483c2c6b86aa1e69a9","schema_version":"1.0","event_id":"sha256:ce2459f09343ff684ab9c2344380eb6550b96f2c2730f5483c2c6b86aa1e69a9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE/bundle.json","state_url":"https://pith.science/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE/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":"2026-06-03T02:39:07Z","links":{"resolver":"https://pith.science/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE","bundle":"https://pith.science/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE/bundle.json","state":"https://pith.science/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UVAAMO6DJLPXX6VPLN2YVUE3DE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:UVAAMO6DJLPXX6VPLN2YVUE3DE","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":"ff22fc4b48856ea5329d10f10c35a1f1fb17649e8113c44d444c65e662414260","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-05T17:54:01Z","title_canon_sha256":"5240e4f2ca3d9ea1bc57340a6b252e2bbb8d4c0d45e90093c2ac847682a8c42f"},"schema_version":"1.0","source":{"id":"1005.0800","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.0800","created_at":"2026-05-18T02:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"1005.0800v2","created_at":"2026-05-18T02:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0800","created_at":"2026-05-18T02:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"UVAAMO6DJLPX","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UVAAMO6DJLPXX6VP","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UVAAMO6D","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:ce2459f09343ff684ab9c2344380eb6550b96f2c2730f5483c2c6b86aa1e69a9","target":"graph","created_at":"2026-05-18T02:07:42Z","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":"In a sub-arcsec near-infrared survey of the Crab Nebula using the new Spartan Infrared Camera, we have found several knots with high surface brightness in the H_2 2.12 micron line and a very large H_2 2.12 micron to Br-gamma ratio. The brightest of these knots has an intensity ratio I(H_2 2.12 micron)/I(Br-gamma) = 18+/-9, which we show sets a lower limit on the ratio of masses in the molecular and recombination (i.e. ionized) zones M_mol / M_rec >/- 0.9, and a total molecular mass within this single knot M_mol >/- 5E-5 M_sun. We argue that the knot discussed here probably is able to emit so s","authors_text":"E. D. Loh, G. J. Ferland, J. A. Baldwin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-05T17:54:01Z","title":"A Bright Molecular Core in a Crab Nebula Filament"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0800","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:a7bc4ba06d671fca56c9d37f6e8e4531cd407598d19dcef583f1b49140a0aee8","target":"record","created_at":"2026-05-18T02:07:42Z","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":"ff22fc4b48856ea5329d10f10c35a1f1fb17649e8113c44d444c65e662414260","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-05T17:54:01Z","title_canon_sha256":"5240e4f2ca3d9ea1bc57340a6b252e2bbb8d4c0d45e90093c2ac847682a8c42f"},"schema_version":"1.0","source":{"id":"1005.0800","kind":"arxiv","version":2}},"canonical_sha256":"a540063bc34adf7bfaaf5b758ad09b1904e8cd4f4bfd731141254e106a6b95bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a540063bc34adf7bfaaf5b758ad09b1904e8cd4f4bfd731141254e106a6b95bc","first_computed_at":"2026-05-18T02:07:42.599517Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:42.599517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5UWZ7edH6P6G41uvhgPjTjtWBb0VxVdclM19XzGn8F+UYVfwfJtibS3wANTOek+qyAzloruyxEDEBX37U1otBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:42.600272Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.0800","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7bc4ba06d671fca56c9d37f6e8e4531cd407598d19dcef583f1b49140a0aee8","sha256:ce2459f09343ff684ab9c2344380eb6550b96f2c2730f5483c2c6b86aa1e69a9"],"state_sha256":"473fc4ef82758f52bef1351e6eca43444d0e574a2b7e92919111770c293c83da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I51gJ8XOTKJbdGEBizj2D8a+Q1NF/YU+uhwvpnoZczk+PAI2yPtqYz30bGOk1xuTjvTjzd407cEo0FkSkq0+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:39:07.507583Z","bundle_sha256":"575cea6796ea45d3c6139fb0dd50a187914179d85fddb39a10522fe661238b79"}}