{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:Q7VJ5GGUGIUTYKVFGG3OCCBL7D","short_pith_number":"pith:Q7VJ5GGU","canonical_record":{"source":{"id":"1711.01417","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-04T09:18:21Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"1256ff3db87389e6a30b0c97daf40bca52e46538cf3d04f84c3f9170cb64c569","abstract_canon_sha256":"2125b3335708a15ab12864cb9fc0eb0d95a6a4320b25e30767f282e388f4435c"},"schema_version":"1.0"},"canonical_sha256":"87ea9e98d432293c2aa531b6e1082bf8f0f3bf2b67ed5967fefb8c1deeee5903","source":{"kind":"arxiv","id":"1711.01417","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.01417","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"arxiv_version","alias_value":"1711.01417v3","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01417","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"pith_short_12","alias_value":"Q7VJ5GGUGIUT","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q7VJ5GGUGIUTYKVF","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q7VJ5GGU","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:Q7VJ5GGUGIUTYKVFGG3OCCBL7D","target":"record","payload":{"canonical_record":{"source":{"id":"1711.01417","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-04T09:18:21Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"1256ff3db87389e6a30b0c97daf40bca52e46538cf3d04f84c3f9170cb64c569","abstract_canon_sha256":"2125b3335708a15ab12864cb9fc0eb0d95a6a4320b25e30767f282e388f4435c"},"schema_version":"1.0"},"canonical_sha256":"87ea9e98d432293c2aa531b6e1082bf8f0f3bf2b67ed5967fefb8c1deeee5903","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:54.304493Z","signature_b64":"0lhwdudWkf7VdlBqvPc3a7E77ekUxr2gF+Cp0F5tVkygsn2zyve50GWYf2X6pRnTyBItmjiqgMhr7glx/mlQBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87ea9e98d432293c2aa531b6e1082bf8f0f3bf2b67ed5967fefb8c1deeee5903","last_reissued_at":"2026-05-18T00:21:54.303744Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:54.303744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.01417","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":"2026-05-18T00:21:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OkDy8eeYEn81jer+n/NGlOu/R2qHXW4zglITKbVzQCadgM1Nxu+zeZwO70pzxCyk5KN0RDIJwx1uFVdGiK3pCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T05:42:02.926195Z"},"content_sha256":"7825f1bb0ad20994cae612190c444fe36c10c9b2115050b057b50ad8434945e0","schema_version":"1.0","event_id":"sha256:7825f1bb0ad20994cae612190c444fe36c10c9b2115050b057b50ad8434945e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:Q7VJ5GGUGIUTYKVFGG3OCCBL7D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the fragmentation of filaments in a molecular cloud simulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"J. C. Ib\\`a\\~nez-Mej\\'ia, J. Kainulainen, M.-M. Mac Low, R.-A. Chira, Th. Henning","submitted_at":"2017-11-04T09:18:21Z","abstract_excerpt":"The fragmentation of filaments in molecular clouds has attracted a lot of attention as there seems to be a relation between the evolution of filaments and star formation. The study of the fragmentation process has been motivated by simple analytical models. However, only a few comprehensive studies have analysed the evolution of filaments using numerical simulations where the filaments form self-consistently as part of molecular clouds. We address the early evolution of pc-scale filaments that form within individual clouds. We focus on three questions: How do the line masses of filaments evolv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01417","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":"2026-05-18T00:21:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wVEeW2btZTmbkz9vCoF6gJwZLRWw19lx2neDB8fZdjdTgs4Bsq9/+jDxwQQk5cDGFNp/L+WqXrgCWC5taVoACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T05:42:02.926558Z"},"content_sha256":"90306179f5b2b8966c44bd7f23e1100b4a6b426d3c751834bc28c7615e324aad","schema_version":"1.0","event_id":"sha256:90306179f5b2b8966c44bd7f23e1100b4a6b426d3c751834bc28c7615e324aad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D/bundle.json","state_url":"https://pith.science/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D/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":"2026-06-04T05:42:02Z","links":{"resolver":"https://pith.science/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D","bundle":"https://pith.science/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D/bundle.json","state":"https://pith.science/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q7VJ5GGUGIUTYKVFGG3OCCBL7D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Q7VJ5GGUGIUTYKVFGG3OCCBL7D","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":"2125b3335708a15ab12864cb9fc0eb0d95a6a4320b25e30767f282e388f4435c","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-04T09:18:21Z","title_canon_sha256":"1256ff3db87389e6a30b0c97daf40bca52e46538cf3d04f84c3f9170cb64c569"},"schema_version":"1.0","source":{"id":"1711.01417","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.01417","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"arxiv_version","alias_value":"1711.01417v3","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01417","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"pith_short_12","alias_value":"Q7VJ5GGUGIUT","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q7VJ5GGUGIUTYKVF","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q7VJ5GGU","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:90306179f5b2b8966c44bd7f23e1100b4a6b426d3c751834bc28c7615e324aad","target":"graph","created_at":"2026-05-18T00:21:54Z","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":"The fragmentation of filaments in molecular clouds has attracted a lot of attention as there seems to be a relation between the evolution of filaments and star formation. The study of the fragmentation process has been motivated by simple analytical models. However, only a few comprehensive studies have analysed the evolution of filaments using numerical simulations where the filaments form self-consistently as part of molecular clouds. We address the early evolution of pc-scale filaments that form within individual clouds. We focus on three questions: How do the line masses of filaments evolv","authors_text":"J. C. Ib\\`a\\~nez-Mej\\'ia, J. Kainulainen, M.-M. Mac Low, R.-A. Chira, Th. Henning","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-04T09:18:21Z","title":"On the fragmentation of filaments in a molecular cloud simulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01417","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":"sha256:7825f1bb0ad20994cae612190c444fe36c10c9b2115050b057b50ad8434945e0","target":"record","created_at":"2026-05-18T00:21:54Z","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":"2125b3335708a15ab12864cb9fc0eb0d95a6a4320b25e30767f282e388f4435c","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-04T09:18:21Z","title_canon_sha256":"1256ff3db87389e6a30b0c97daf40bca52e46538cf3d04f84c3f9170cb64c569"},"schema_version":"1.0","source":{"id":"1711.01417","kind":"arxiv","version":3}},"canonical_sha256":"87ea9e98d432293c2aa531b6e1082bf8f0f3bf2b67ed5967fefb8c1deeee5903","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87ea9e98d432293c2aa531b6e1082bf8f0f3bf2b67ed5967fefb8c1deeee5903","first_computed_at":"2026-05-18T00:21:54.303744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:54.303744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0lhwdudWkf7VdlBqvPc3a7E77ekUxr2gF+Cp0F5tVkygsn2zyve50GWYf2X6pRnTyBItmjiqgMhr7glx/mlQBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:54.304493Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.01417","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7825f1bb0ad20994cae612190c444fe36c10c9b2115050b057b50ad8434945e0","sha256:90306179f5b2b8966c44bd7f23e1100b4a6b426d3c751834bc28c7615e324aad"],"state_sha256":"ab256ec653f8efa502f3450eab35af019f730e77334c1f5a2ec5583f0d3117e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RiGO2u5ZrUXw/9ef+ko7Ldgd0MwsAU/npB62F2nCPcLwuPuOLS10fsOP0o5twOA9TQXFyCvaNelu/+/DIewzDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T05:42:02.928500Z","bundle_sha256":"2ce7a7dd8879c3f06f735f7063cc737fcf83db4c8e93e798bc31c315205d54fa"}}