{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:KJAU5XBBZSZR672YPZDAOSWUCB","short_pith_number":"pith:KJAU5XBB","canonical_record":{"source":{"id":"1310.0809","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-02T19:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"0ecb9ca267f3f3c323870bb123c0240a3d888f8578579411b1ab09ee11c8b097","abstract_canon_sha256":"a0babcc50d344e15dae124f4ab086d28b62d1d9d6c73e859ee60d6dccaeb6762"},"schema_version":"1.0"},"canonical_sha256":"52414edc21ccb31f7f587e46074ad4105415be9dc7413ed7e5d4cf3c3a33ec95","source":{"kind":"arxiv","id":"1310.0809","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0809","created_at":"2026-05-18T01:47:16Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0809v2","created_at":"2026-05-18T01:47:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0809","created_at":"2026-05-18T01:47:16Z"},{"alias_kind":"pith_short_12","alias_value":"KJAU5XBBZSZR","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"KJAU5XBBZSZR672Y","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"KJAU5XBB","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:KJAU5XBBZSZR672YPZDAOSWUCB","target":"record","payload":{"canonical_record":{"source":{"id":"1310.0809","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-02T19:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"0ecb9ca267f3f3c323870bb123c0240a3d888f8578579411b1ab09ee11c8b097","abstract_canon_sha256":"a0babcc50d344e15dae124f4ab086d28b62d1d9d6c73e859ee60d6dccaeb6762"},"schema_version":"1.0"},"canonical_sha256":"52414edc21ccb31f7f587e46074ad4105415be9dc7413ed7e5d4cf3c3a33ec95","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:16.220201Z","signature_b64":"MlY+TS1lOKfymejiUTZYfXo6L0Hx8RwQWNXNHCPoCCKt/A8XIW3+zMHSTUg9mz459ao7fpmPIVBBcIG9LsaKBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52414edc21ccb31f7f587e46074ad4105415be9dc7413ed7e5d4cf3c3a33ec95","last_reissued_at":"2026-05-18T01:47:16.219495Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:16.219495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.0809","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":"2026-05-18T01:47:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jvYEiA2SfJu8cC49mwhg7HMEy64G2DRi4A9yftOr0tdA39dnVURr5eYFvpKLgeZ1BjdpgXLW4JJuEZtXcefFDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T21:06:57.254926Z"},"content_sha256":"4e65e76634e4fe96bf8c4fde606aaccb984278352ffc40c655099e255d55e885","schema_version":"1.0","event_id":"sha256:4e65e76634e4fe96bf8c4fde606aaccb984278352ffc40c655099e255d55e885"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:KJAU5XBBZSZR672YPZDAOSWUCB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A measurement of the turbulence-driven density distribution in a non-star-forming molecular cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam Ginsburg, Christoph Federrath, Jeremy Darling","submitted_at":"2013-10-02T19:59:59Z","abstract_excerpt":"Molecular clouds are supersonically turbulent. This turbulence governs the initial mass function and the star formation rate. In order to understand the details of star formation, it is therefore essential to understand the properties of turbulence, in particular the probability distribution of density in turbulent clouds. We present formaldehyde volume density measurements of a non-star-forming cloud along the line of sight towards W49A. We use these measurements in conjunction with total mass estimates from 13CO to infer the shape of the density probability distribution function. This method"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0809","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":"2026-05-18T01:47:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZuMMonpEgxj8MQlFPw4DtMpeY/7mUGpjU7LQjxrcCgIleqIiDMXemy8NtBbdjca1e3+h2QktNC7QOfikzfYhDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T21:06:57.255338Z"},"content_sha256":"cc49854f22116924e843c4e7a65f2acfd6eb673ad714e09179bb3604ee2f69ab","schema_version":"1.0","event_id":"sha256:cc49854f22116924e843c4e7a65f2acfd6eb673ad714e09179bb3604ee2f69ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KJAU5XBBZSZR672YPZDAOSWUCB/bundle.json","state_url":"https://pith.science/pith/KJAU5XBBZSZR672YPZDAOSWUCB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KJAU5XBBZSZR672YPZDAOSWUCB/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":"2026-05-22T21:06:57Z","links":{"resolver":"https://pith.science/pith/KJAU5XBBZSZR672YPZDAOSWUCB","bundle":"https://pith.science/pith/KJAU5XBBZSZR672YPZDAOSWUCB/bundle.json","state":"https://pith.science/pith/KJAU5XBBZSZR672YPZDAOSWUCB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KJAU5XBBZSZR672YPZDAOSWUCB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:KJAU5XBBZSZR672YPZDAOSWUCB","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":"a0babcc50d344e15dae124f4ab086d28b62d1d9d6c73e859ee60d6dccaeb6762","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-02T19:59:59Z","title_canon_sha256":"0ecb9ca267f3f3c323870bb123c0240a3d888f8578579411b1ab09ee11c8b097"},"schema_version":"1.0","source":{"id":"1310.0809","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0809","created_at":"2026-05-18T01:47:16Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0809v2","created_at":"2026-05-18T01:47:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0809","created_at":"2026-05-18T01:47:16Z"},{"alias_kind":"pith_short_12","alias_value":"KJAU5XBBZSZR","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"KJAU5XBBZSZR672Y","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"KJAU5XBB","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:cc49854f22116924e843c4e7a65f2acfd6eb673ad714e09179bb3604ee2f69ab","target":"graph","created_at":"2026-05-18T01:47:16Z","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":"Molecular clouds are supersonically turbulent. This turbulence governs the initial mass function and the star formation rate. In order to understand the details of star formation, it is therefore essential to understand the properties of turbulence, in particular the probability distribution of density in turbulent clouds. We present formaldehyde volume density measurements of a non-star-forming cloud along the line of sight towards W49A. We use these measurements in conjunction with total mass estimates from 13CO to infer the shape of the density probability distribution function. This method","authors_text":"Adam Ginsburg, Christoph Federrath, Jeremy Darling","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-02T19:59:59Z","title":"A measurement of the turbulence-driven density distribution in a non-star-forming molecular cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0809","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":"sha256:4e65e76634e4fe96bf8c4fde606aaccb984278352ffc40c655099e255d55e885","target":"record","created_at":"2026-05-18T01:47:16Z","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":"a0babcc50d344e15dae124f4ab086d28b62d1d9d6c73e859ee60d6dccaeb6762","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-02T19:59:59Z","title_canon_sha256":"0ecb9ca267f3f3c323870bb123c0240a3d888f8578579411b1ab09ee11c8b097"},"schema_version":"1.0","source":{"id":"1310.0809","kind":"arxiv","version":2}},"canonical_sha256":"52414edc21ccb31f7f587e46074ad4105415be9dc7413ed7e5d4cf3c3a33ec95","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52414edc21ccb31f7f587e46074ad4105415be9dc7413ed7e5d4cf3c3a33ec95","first_computed_at":"2026-05-18T01:47:16.219495Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:16.219495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MlY+TS1lOKfymejiUTZYfXo6L0Hx8RwQWNXNHCPoCCKt/A8XIW3+zMHSTUg9mz459ao7fpmPIVBBcIG9LsaKBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:16.220201Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.0809","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e65e76634e4fe96bf8c4fde606aaccb984278352ffc40c655099e255d55e885","sha256:cc49854f22116924e843c4e7a65f2acfd6eb673ad714e09179bb3604ee2f69ab"],"state_sha256":"7afb991df20c82ebf362ca413d4177b247ed925fd91833ba0f44214e49a5c161"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M6GpwoE8FceuupJz8OOziHyXAp19atFyG0xbjZbQ3RXhPZrmRcGLKb5EOmIO2UumfrAOiokqmkcfjwQKVGkdDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T21:06:57.259554Z","bundle_sha256":"9fb7aae55112605aaedd44b2df88f7701b15b9f3df19fb2357b3cd9f12dd7458"}}