{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6E6WHJP7JHNNNOIMFQRICV4ZXU","short_pith_number":"pith:6E6WHJP7","canonical_record":{"source":{"id":"1709.05149","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-15T10:55:03Z","cross_cats_sorted":[],"title_canon_sha256":"e0eaa32448a5b829df1dfa135360edebdb4facd832dd13abf47178318dd995b4","abstract_canon_sha256":"20e5c1a95186969cc900159f58cd74437e00722b2e98c39b5a79c0959bea7249"},"schema_version":"1.0"},"canonical_sha256":"f13d63a5ff49dad6b90c2c22815799bd11651ea687000b0e8bd300a57fbbb389","source":{"kind":"arxiv","id":"1709.05149","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05149","created_at":"2026-05-18T00:33:12Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05149v1","created_at":"2026-05-18T00:33:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05149","created_at":"2026-05-18T00:33:12Z"},{"alias_kind":"pith_short_12","alias_value":"6E6WHJP7JHNN","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6E6WHJP7JHNNNOIM","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6E6WHJP7","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6E6WHJP7JHNNNOIMFQRICV4ZXU","target":"record","payload":{"canonical_record":{"source":{"id":"1709.05149","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-15T10:55:03Z","cross_cats_sorted":[],"title_canon_sha256":"e0eaa32448a5b829df1dfa135360edebdb4facd832dd13abf47178318dd995b4","abstract_canon_sha256":"20e5c1a95186969cc900159f58cd74437e00722b2e98c39b5a79c0959bea7249"},"schema_version":"1.0"},"canonical_sha256":"f13d63a5ff49dad6b90c2c22815799bd11651ea687000b0e8bd300a57fbbb389","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:12.897873Z","signature_b64":"1pPF38T8k7p8KXabgCs+nFHtddh3WYqqf8v4LQECbTL6UOhqxfrcDh+tRw8N1ENMhxINP4ItGW3miBTBQhBIDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f13d63a5ff49dad6b90c2c22815799bd11651ea687000b0e8bd300a57fbbb389","last_reissued_at":"2026-05-18T00:33:12.897243Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:12.897243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.05149","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":"2026-05-18T00:33:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OnK06ot7kEGkoNbsPrfwT+WhiHgHlo2Q3LR047jPFv9POu1hEBiDbFOatlLw9ZIGN7dUGpuLCznnAAgcYhRyDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:10:13.818845Z"},"content_sha256":"10fcf1909c66c251fed486e46fd33bd6bfb3c8af3f427daf40f6d2ca4ecd1940","schema_version":"1.0","event_id":"sha256:10fcf1909c66c251fed486e46fd33bd6bfb3c8af3f427daf40f6d2ca4ecd1940"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6E6WHJP7JHNNNOIMFQRICV4ZXU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fragmentation of Filamentary Cloud Permeated by Perpendicular Magnetic Field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Kohji Tomisaka, Takahiro Kudoh, Tomoyuki Hanawa","submitted_at":"2017-09-15T10:55:03Z","abstract_excerpt":"We examine the linear stability of an isothermal filamentary cloud permeated by a perpendicular magnetic field. Our model cloud is assumed to be supported by gas pressure against the self-gravity in the unperturbed state. For simplicity, the density distribution is assumed to be symmetric around the axis. Also for simplicity, the initial magnetic field is assumed to be uniform and turbulence is not taken into account. The perturbation equation is formulated to be an eigenvalue problem. The growth rate is obtained as a function of the wavenumber for fragmentation along the axis and the magnetic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05149","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":"2026-05-18T00:33:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q0QbAPGQnbBiPflKVJ6w4RgWYSDbc7SG7jXT+oMVobfBD0zF1ALPEpQbMfChnrPVfB5LTBJTEJs7KS6BVNlHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:10:13.819190Z"},"content_sha256":"86a9bedaeed56d3ba3235d4d80d488a8dce7bf2017118ccb4023f93a14d5d473","schema_version":"1.0","event_id":"sha256:86a9bedaeed56d3ba3235d4d80d488a8dce7bf2017118ccb4023f93a14d5d473"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU/bundle.json","state_url":"https://pith.science/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU/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":"2026-06-01T12:10:13Z","links":{"resolver":"https://pith.science/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU","bundle":"https://pith.science/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU/bundle.json","state":"https://pith.science/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6E6WHJP7JHNNNOIMFQRICV4ZXU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6E6WHJP7JHNNNOIMFQRICV4ZXU","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":"20e5c1a95186969cc900159f58cd74437e00722b2e98c39b5a79c0959bea7249","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-15T10:55:03Z","title_canon_sha256":"e0eaa32448a5b829df1dfa135360edebdb4facd832dd13abf47178318dd995b4"},"schema_version":"1.0","source":{"id":"1709.05149","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05149","created_at":"2026-05-18T00:33:12Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05149v1","created_at":"2026-05-18T00:33:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05149","created_at":"2026-05-18T00:33:12Z"},{"alias_kind":"pith_short_12","alias_value":"6E6WHJP7JHNN","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6E6WHJP7JHNNNOIM","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6E6WHJP7","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:86a9bedaeed56d3ba3235d4d80d488a8dce7bf2017118ccb4023f93a14d5d473","target":"graph","created_at":"2026-05-18T00:33:12Z","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 examine the linear stability of an isothermal filamentary cloud permeated by a perpendicular magnetic field. Our model cloud is assumed to be supported by gas pressure against the self-gravity in the unperturbed state. For simplicity, the density distribution is assumed to be symmetric around the axis. Also for simplicity, the initial magnetic field is assumed to be uniform and turbulence is not taken into account. The perturbation equation is formulated to be an eigenvalue problem. The growth rate is obtained as a function of the wavenumber for fragmentation along the axis and the magnetic","authors_text":"Kohji Tomisaka, Takahiro Kudoh, Tomoyuki Hanawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-15T10:55:03Z","title":"Fragmentation of Filamentary Cloud Permeated by Perpendicular Magnetic Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05149","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":"sha256:10fcf1909c66c251fed486e46fd33bd6bfb3c8af3f427daf40f6d2ca4ecd1940","target":"record","created_at":"2026-05-18T00:33:12Z","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":"20e5c1a95186969cc900159f58cd74437e00722b2e98c39b5a79c0959bea7249","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-15T10:55:03Z","title_canon_sha256":"e0eaa32448a5b829df1dfa135360edebdb4facd832dd13abf47178318dd995b4"},"schema_version":"1.0","source":{"id":"1709.05149","kind":"arxiv","version":1}},"canonical_sha256":"f13d63a5ff49dad6b90c2c22815799bd11651ea687000b0e8bd300a57fbbb389","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f13d63a5ff49dad6b90c2c22815799bd11651ea687000b0e8bd300a57fbbb389","first_computed_at":"2026-05-18T00:33:12.897243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:12.897243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1pPF38T8k7p8KXabgCs+nFHtddh3WYqqf8v4LQECbTL6UOhqxfrcDh+tRw8N1ENMhxINP4ItGW3miBTBQhBIDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:12.897873Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.05149","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10fcf1909c66c251fed486e46fd33bd6bfb3c8af3f427daf40f6d2ca4ecd1940","sha256:86a9bedaeed56d3ba3235d4d80d488a8dce7bf2017118ccb4023f93a14d5d473"],"state_sha256":"873fa5feda10d7934776ccd724adaa576b13b1461aae270f4eaa88a78049abbf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A8VqO0L7hHizA1g4PfBEEHCYXK+xWL3ZTeGrs9xX3KnPZfPKI62J0OOVkZJu04YqbizOmZfRi6OaLq6UeytMAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:10:13.821129Z","bundle_sha256":"aaa50ae89cf734525510ea3a13ebdaae4d7dd55b84b7054b60c7a3a8cfc3651d"}}