{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:U64MJOCQZYC765GFLLBGHCGU5A","short_pith_number":"pith:U64MJOCQ","canonical_record":{"source":{"id":"1603.04302","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-14T15:14:25Z","cross_cats_sorted":[],"title_canon_sha256":"caa7c7ae4b264c9f0a6b2708f10e6b6051935974fefc7d2ad2d042949c3b7a0a","abstract_canon_sha256":"be798c98954de1aac781941a5de51ee411bc81800f857ac0bbf403aca605ef37"},"schema_version":"1.0"},"canonical_sha256":"a7b8c4b850ce05ff74c55ac26388d4e80450227d397d1666c6fc90a4ed27a15b","source":{"kind":"arxiv","id":"1603.04302","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04302","created_at":"2026-05-18T01:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04302v3","created_at":"2026-05-18T01:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04302","created_at":"2026-05-18T01:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"U64MJOCQZYC7","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"U64MJOCQZYC765GF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"U64MJOCQ","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:U64MJOCQZYC765GFLLBGHCGU5A","target":"record","payload":{"canonical_record":{"source":{"id":"1603.04302","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-14T15:14:25Z","cross_cats_sorted":[],"title_canon_sha256":"caa7c7ae4b264c9f0a6b2708f10e6b6051935974fefc7d2ad2d042949c3b7a0a","abstract_canon_sha256":"be798c98954de1aac781941a5de51ee411bc81800f857ac0bbf403aca605ef37"},"schema_version":"1.0"},"canonical_sha256":"a7b8c4b850ce05ff74c55ac26388d4e80450227d397d1666c6fc90a4ed27a15b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:15:13.706348Z","signature_b64":"838s9DCYEuwnVsM2ZbmF4I9ky7oiriHS85SMjhNKXFriuP4M5t7M2L2aBXohhFylcvVWt6blF7Z2BhYCh1pLCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7b8c4b850ce05ff74c55ac26388d4e80450227d397d1666c6fc90a4ed27a15b","last_reissued_at":"2026-05-18T01:15:13.705679Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:15:13.705679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.04302","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NAUG7Rfy5DNWpq4bf/fg8/ZOBOe3/57mM/CxtvIEL5UD8oYVpQ3hd4bkUOG4EN1FHmu2Ww91+fJCwoELry9FCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:25:28.285716Z"},"content_sha256":"ce2275f4a4670e66c7b5420057563a7582cbe5ada9c984b37c74c14e04887431","schema_version":"1.0","event_id":"sha256:ce2275f4a4670e66c7b5420057563a7582cbe5ada9c984b37c74c14e04887431"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:U64MJOCQZYC765GFLLBGHCGU5A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CO-to-H_2 Conversion Factor of Molecular Clouds using X-Ray Shadows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jun Kataoka, Yoshiaki SOFUE","submitted_at":"2016-03-14T15:14:25Z","abstract_excerpt":"A new method to determine the CO-to-H$_2$ conversion factor $X_{\\rm CO}$ using absorption of diffuse X-ray emission by local molecular clouds was developed. It was applied to the Ophiucus (G353+17) and Corona Australis (G359-18) clouds using CO-line and soft X-ray archival data. We obtained a value $X_{\\rm CO} =1.85 \\pm 0.45 \\times 10^{20} {\\rm H_2 cm^{-2}/(K~ km~ s^{-1})}$ as the average of least-$chi^2$ fitting results for R4 (0.7 keV) and R5 (0.8 keV) bands.\n  Full resolution pdf available at http://www.ioa.s.u-tokyo.ac.jp/~sofue/htdocs/2016Xco/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04302","kind":"arxiv","version":3},"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":"2026-05-18T01:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8TdFpYV5MCPFPDVCb96Hi9auVB9FxaxfZdGt84Ru2pYry1PNyzg8EcqyGCldbuXwEU+yYEWaigKp2HeIp4WLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:25:28.286064Z"},"content_sha256":"fb3203a4101f2b2c89481c817f5470064761fdebc3fd2bb832a18eb1015f41fc","schema_version":"1.0","event_id":"sha256:fb3203a4101f2b2c89481c817f5470064761fdebc3fd2bb832a18eb1015f41fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U64MJOCQZYC765GFLLBGHCGU5A/bundle.json","state_url":"https://pith.science/pith/U64MJOCQZYC765GFLLBGHCGU5A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U64MJOCQZYC765GFLLBGHCGU5A/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":"2026-06-01T11:25:28Z","links":{"resolver":"https://pith.science/pith/U64MJOCQZYC765GFLLBGHCGU5A","bundle":"https://pith.science/pith/U64MJOCQZYC765GFLLBGHCGU5A/bundle.json","state":"https://pith.science/pith/U64MJOCQZYC765GFLLBGHCGU5A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U64MJOCQZYC765GFLLBGHCGU5A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:U64MJOCQZYC765GFLLBGHCGU5A","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":"be798c98954de1aac781941a5de51ee411bc81800f857ac0bbf403aca605ef37","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-14T15:14:25Z","title_canon_sha256":"caa7c7ae4b264c9f0a6b2708f10e6b6051935974fefc7d2ad2d042949c3b7a0a"},"schema_version":"1.0","source":{"id":"1603.04302","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04302","created_at":"2026-05-18T01:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04302v3","created_at":"2026-05-18T01:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04302","created_at":"2026-05-18T01:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"U64MJOCQZYC7","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"U64MJOCQZYC765GF","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"U64MJOCQ","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:fb3203a4101f2b2c89481c817f5470064761fdebc3fd2bb832a18eb1015f41fc","target":"graph","created_at":"2026-05-18T01:15:13Z","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":"A new method to determine the CO-to-H$_2$ conversion factor $X_{\\rm CO}$ using absorption of diffuse X-ray emission by local molecular clouds was developed. It was applied to the Ophiucus (G353+17) and Corona Australis (G359-18) clouds using CO-line and soft X-ray archival data. We obtained a value $X_{\\rm CO} =1.85 \\pm 0.45 \\times 10^{20} {\\rm H_2 cm^{-2}/(K~ km~ s^{-1})}$ as the average of least-$chi^2$ fitting results for R4 (0.7 keV) and R5 (0.8 keV) bands.\n  Full resolution pdf available at http://www.ioa.s.u-tokyo.ac.jp/~sofue/htdocs/2016Xco/","authors_text":"Jun Kataoka, Yoshiaki SOFUE","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-14T15:14:25Z","title":"CO-to-H_2 Conversion Factor of Molecular Clouds using X-Ray Shadows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04302","kind":"arxiv","version":3},"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:ce2275f4a4670e66c7b5420057563a7582cbe5ada9c984b37c74c14e04887431","target":"record","created_at":"2026-05-18T01:15:13Z","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":"be798c98954de1aac781941a5de51ee411bc81800f857ac0bbf403aca605ef37","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-14T15:14:25Z","title_canon_sha256":"caa7c7ae4b264c9f0a6b2708f10e6b6051935974fefc7d2ad2d042949c3b7a0a"},"schema_version":"1.0","source":{"id":"1603.04302","kind":"arxiv","version":3}},"canonical_sha256":"a7b8c4b850ce05ff74c55ac26388d4e80450227d397d1666c6fc90a4ed27a15b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7b8c4b850ce05ff74c55ac26388d4e80450227d397d1666c6fc90a4ed27a15b","first_computed_at":"2026-05-18T01:15:13.705679Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:15:13.705679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"838s9DCYEuwnVsM2ZbmF4I9ky7oiriHS85SMjhNKXFriuP4M5t7M2L2aBXohhFylcvVWt6blF7Z2BhYCh1pLCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:15:13.706348Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.04302","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce2275f4a4670e66c7b5420057563a7582cbe5ada9c984b37c74c14e04887431","sha256:fb3203a4101f2b2c89481c817f5470064761fdebc3fd2bb832a18eb1015f41fc"],"state_sha256":"b8bdc7f2a75b62f07d63772200001ed8447684dce758e79ecb0b040f1f4cd82c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PkIaM9NPY9MGLAnSqeBso9R6Et/5nIv1W8R+v8eUqQ4Jd2V8Z72WezkWiKixtokkyzKObHCvb9fYu3IbiMDSBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T11:25:28.288106Z","bundle_sha256":"0ea724b6796aa0ef6cec5f48eb84ade060e8ef7d763359360b71bb69cfdb5689"}}