{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:7DJS2UU2ECR5MQTNCRKV6OHU7Q","short_pith_number":"pith:7DJS2UU2","canonical_record":{"source":{"id":"1505.03855","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-14T19:59:36Z","cross_cats_sorted":[],"title_canon_sha256":"e1f78582aa5ac4025b56f1762dfc81efa34f175a14d2690e080c2fe09a16b763","abstract_canon_sha256":"6f3d8d7e3b59ed639d3293f3bd74b4ff6d9c6af60b1f17fe8067c208f40d3e81"},"schema_version":"1.0"},"canonical_sha256":"f8d32d529a20a3d6426d14555f38f4fc155dda10d54d62dd4a5381cf1db1ba55","source":{"kind":"arxiv","id":"1505.03855","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.03855","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.03855v1","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.03855","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"pith_short_12","alias_value":"7DJS2UU2ECR5","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"7DJS2UU2ECR5MQTN","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"7DJS2UU2","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:7DJS2UU2ECR5MQTNCRKV6OHU7Q","target":"record","payload":{"canonical_record":{"source":{"id":"1505.03855","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-14T19:59:36Z","cross_cats_sorted":[],"title_canon_sha256":"e1f78582aa5ac4025b56f1762dfc81efa34f175a14d2690e080c2fe09a16b763","abstract_canon_sha256":"6f3d8d7e3b59ed639d3293f3bd74b4ff6d9c6af60b1f17fe8067c208f40d3e81"},"schema_version":"1.0"},"canonical_sha256":"f8d32d529a20a3d6426d14555f38f4fc155dda10d54d62dd4a5381cf1db1ba55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:47.817124Z","signature_b64":"LXFxbmKfdbS2Dfa0hvbl8yhwOZNyaYuum0eNqf+HRYHPq4zjlfx+a4NPDQ6WVTv7JgEUbbJuKSPwGb8b/hzJAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8d32d529a20a3d6426d14555f38f4fc155dda10d54d62dd4a5381cf1db1ba55","last_reissued_at":"2026-05-18T01:35:47.816480Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:47.816480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.03855","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":"2026-05-18T01:35:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UOD0nn63Ljg5TBBCOpLQTAX3qxYAS1DtYHua11SFAMTg3/ge0OJZYPVzdNmsEKyRXwYu6Ndlnoa0TxgGSbroCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T11:49:29.686814Z"},"content_sha256":"572842800ac8106a9c532ee4aeedd6749dfc5e2db1d1e4af97dec48a28e05102","schema_version":"1.0","event_id":"sha256:572842800ac8106a9c532ee4aeedd6749dfc5e2db1d1e4af97dec48a28e05102"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:7DJS2UU2ECR5MQTNCRKV6OHU7Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational Diagnostics of Self-Gravitating MHD Turbulence in Giant Molecular Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alex Lazarian, Blakesley Burkhart, David C. Collins","submitted_at":"2015-05-14T19:59:36Z","abstract_excerpt":"We study the observable signatures of self-gravitating MHD turbulence by applying the probability density functions (PDFs) and the spatial density power spectrum to synthetic column density maps. We find that there exists three characterizable stages of the evolution of the collapsing cloud which we term \"early,\" \"intermediate,\" and \"advanced.\" At early times, i.e. $t<0.15t_{ff}$, the column density has a power spectral slope similar to nongravitating supersonic turbulence and a lognormal distribution. At an intermediate stage, i.e. $0.15t_{ff}< t \\leq 0.35t_{ff}$, there exists signatures of t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.03855","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":"2026-05-18T01:35:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8y+8M1Kn17hdfhhKAGDq/DHAK0B0ESSjnw3te1UwHqEt17ras3ps0UWT3JlipgYOkR/dOow7B6+e43AZ8quMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T11:49:29.687396Z"},"content_sha256":"36016bc4a2f3fb8eaeb5a95a45c40b5fbb89a71dcff854ae221f72ffe64cf22c","schema_version":"1.0","event_id":"sha256:36016bc4a2f3fb8eaeb5a95a45c40b5fbb89a71dcff854ae221f72ffe64cf22c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q/bundle.json","state_url":"https://pith.science/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q/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":"2026-06-11T11:49:29Z","links":{"resolver":"https://pith.science/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q","bundle":"https://pith.science/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q/bundle.json","state":"https://pith.science/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7DJS2UU2ECR5MQTNCRKV6OHU7Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7DJS2UU2ECR5MQTNCRKV6OHU7Q","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":"6f3d8d7e3b59ed639d3293f3bd74b4ff6d9c6af60b1f17fe8067c208f40d3e81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-14T19:59:36Z","title_canon_sha256":"e1f78582aa5ac4025b56f1762dfc81efa34f175a14d2690e080c2fe09a16b763"},"schema_version":"1.0","source":{"id":"1505.03855","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.03855","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.03855v1","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.03855","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"pith_short_12","alias_value":"7DJS2UU2ECR5","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"7DJS2UU2ECR5MQTN","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"7DJS2UU2","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:36016bc4a2f3fb8eaeb5a95a45c40b5fbb89a71dcff854ae221f72ffe64cf22c","target":"graph","created_at":"2026-05-18T01:35:47Z","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 study the observable signatures of self-gravitating MHD turbulence by applying the probability density functions (PDFs) and the spatial density power spectrum to synthetic column density maps. We find that there exists three characterizable stages of the evolution of the collapsing cloud which we term \"early,\" \"intermediate,\" and \"advanced.\" At early times, i.e. $t<0.15t_{ff}$, the column density has a power spectral slope similar to nongravitating supersonic turbulence and a lognormal distribution. At an intermediate stage, i.e. $0.15t_{ff}< t \\leq 0.35t_{ff}$, there exists signatures of t","authors_text":"Alex Lazarian, Blakesley Burkhart, David C. Collins","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-14T19:59:36Z","title":"Observational Diagnostics of Self-Gravitating MHD Turbulence in Giant Molecular Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.03855","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":"sha256:572842800ac8106a9c532ee4aeedd6749dfc5e2db1d1e4af97dec48a28e05102","target":"record","created_at":"2026-05-18T01:35:47Z","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":"6f3d8d7e3b59ed639d3293f3bd74b4ff6d9c6af60b1f17fe8067c208f40d3e81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-14T19:59:36Z","title_canon_sha256":"e1f78582aa5ac4025b56f1762dfc81efa34f175a14d2690e080c2fe09a16b763"},"schema_version":"1.0","source":{"id":"1505.03855","kind":"arxiv","version":1}},"canonical_sha256":"f8d32d529a20a3d6426d14555f38f4fc155dda10d54d62dd4a5381cf1db1ba55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8d32d529a20a3d6426d14555f38f4fc155dda10d54d62dd4a5381cf1db1ba55","first_computed_at":"2026-05-18T01:35:47.816480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:47.816480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LXFxbmKfdbS2Dfa0hvbl8yhwOZNyaYuum0eNqf+HRYHPq4zjlfx+a4NPDQ6WVTv7JgEUbbJuKSPwGb8b/hzJAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:47.817124Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.03855","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:572842800ac8106a9c532ee4aeedd6749dfc5e2db1d1e4af97dec48a28e05102","sha256:36016bc4a2f3fb8eaeb5a95a45c40b5fbb89a71dcff854ae221f72ffe64cf22c"],"state_sha256":"2b4b39552b5dac3343e3431b5382466fe4446757cd342304325b3c0cc96697af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WF4vniWPrH7JqbiFsNfZMTrNnnDLEFE7U/ybmDra9ml/vSNnHRLmY09dOD4MuP76mCf7SFtPgBJ5ZhHTpEHpBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T11:49:29.690372Z","bundle_sha256":"14f92dde531ea087a193d5d6a2f89f01556076d554124beda7e0ab77a729b3c3"}}