{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:5KIAXAFYVK73K364O3JQ3WCGKB","short_pith_number":"pith:5KIAXAFY","canonical_record":{"source":{"id":"astro-ph/9804114","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-04-10T23:00:21Z","cross_cats_sorted":[],"title_canon_sha256":"70025146c1cd9d1946ecff63f885e121ddbfa0f61c0f887380b453fb5e869c4c","abstract_canon_sha256":"6a1d0e7b7799c46a02908193db56cecd0b358b2626deebc2d02a0df032f53812"},"schema_version":"1.0"},"canonical_sha256":"ea900b80b8aabfb56fdc76d30dd8465067f8f1750a29e8da73356e7470c917df","source":{"kind":"arxiv","id":"astro-ph/9804114","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9804114","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9804114v1","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9804114","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"pith_short_12","alias_value":"5KIAXAFYVK73","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"pith_short_16","alias_value":"5KIAXAFYVK73K364","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"pith_short_8","alias_value":"5KIAXAFY","created_at":"2026-07-04T16:06:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:5KIAXAFYVK73K364O3JQ3WCGKB","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9804114","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-04-10T23:00:21Z","cross_cats_sorted":[],"title_canon_sha256":"70025146c1cd9d1946ecff63f885e121ddbfa0f61c0f887380b453fb5e869c4c","abstract_canon_sha256":"6a1d0e7b7799c46a02908193db56cecd0b358b2626deebc2d02a0df032f53812"},"schema_version":"1.0"},"canonical_sha256":"ea900b80b8aabfb56fdc76d30dd8465067f8f1750a29e8da73356e7470c917df","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:06:18.151661Z","signature_b64":"rKJhVCnQERKzunhLxKDt9vdwwoorLIcSg8uFAHnpSKkHsllqK3pSmV4XvA/qc5q48wTjftCT7wAioiwMPh8SCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea900b80b8aabfb56fdc76d30dd8465067f8f1750a29e8da73356e7470c917df","last_reissued_at":"2026-07-04T16:06:18.151295Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:06:18.151295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9804114","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":"2026-07-04T16:06:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vqimREKhNTV4eG5DzOs5EVARkKMyNHXryItL0PUzPisVZODMmqDkMZ7xLSXi2mo9UQ7Yf1Vlm/rL8u/xAyeLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-29T06:54:59.090967Z"},"content_sha256":"212917b414b43750870547f57e000890692cc891e41acad79d51dc5bc3bd84da","schema_version":"1.0","event_id":"sha256:212917b414b43750870547f57e000890692cc891e41acad79d51dc5bc3bd84da"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:5KIAXAFYVK73K364O3JQ3WCGKB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Self-Similar Collapse of Nonrotating Magnetic Molecular Cloud Cores","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Arieh Konigl (Univ. of Chicago), Glenn E. Ciolek, Ioannis Contopoulos","submitted_at":"1998-04-10T23:00:21Z","abstract_excerpt":"We obtain self-similar solutions that describe the gravitational collapse of nonrotating, isothermal, magnetic molecular cloud cores. We use simplifying assumptions but explicitly include the induction equation, and the semianalytic solutions we derive are the first to account for the effects of ambipolar diffusion following the formation of a central point mass. Our results demonstrate that, after the protostar first forms, ambipolar diffusion causes the magnetic flux to decouple in a growing region around the center. The decoupled field lines remain approximately stationary and drive a hydro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9804114","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9804114/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:06:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A9HprtU4AIRqZWA536R0CVOnn71yqR8sR9zkb0d7/oKzg/es7k0KlU8nBKk2MJc43LiTUcTZTX19FjtsAA00DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-29T06:54:59.091367Z"},"content_sha256":"467d94354fdb7f16a3e3a750add39e97c1107c47657d5729871b8fdd232c4c72","schema_version":"1.0","event_id":"sha256:467d94354fdb7f16a3e3a750add39e97c1107c47657d5729871b8fdd232c4c72"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5KIAXAFYVK73K364O3JQ3WCGKB/bundle.json","state_url":"https://pith.science/pith/5KIAXAFYVK73K364O3JQ3WCGKB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5KIAXAFYVK73K364O3JQ3WCGKB/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":"2026-07-29T06:54:59Z","links":{"resolver":"https://pith.science/pith/5KIAXAFYVK73K364O3JQ3WCGKB","bundle":"https://pith.science/pith/5KIAXAFYVK73K364O3JQ3WCGKB/bundle.json","state":"https://pith.science/pith/5KIAXAFYVK73K364O3JQ3WCGKB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5KIAXAFYVK73K364O3JQ3WCGKB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:5KIAXAFYVK73K364O3JQ3WCGKB","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":"6a1d0e7b7799c46a02908193db56cecd0b358b2626deebc2d02a0df032f53812","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-04-10T23:00:21Z","title_canon_sha256":"70025146c1cd9d1946ecff63f885e121ddbfa0f61c0f887380b453fb5e869c4c"},"schema_version":"1.0","source":{"id":"astro-ph/9804114","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9804114","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9804114v1","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9804114","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"pith_short_12","alias_value":"5KIAXAFYVK73","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"pith_short_16","alias_value":"5KIAXAFYVK73K364","created_at":"2026-07-04T16:06:18Z"},{"alias_kind":"pith_short_8","alias_value":"5KIAXAFY","created_at":"2026-07-04T16:06:18Z"}],"graph_snapshots":[{"event_id":"sha256:467d94354fdb7f16a3e3a750add39e97c1107c47657d5729871b8fdd232c4c72","target":"graph","created_at":"2026-07-04T16:06:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/9804114/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We obtain self-similar solutions that describe the gravitational collapse of nonrotating, isothermal, magnetic molecular cloud cores. We use simplifying assumptions but explicitly include the induction equation, and the semianalytic solutions we derive are the first to account for the effects of ambipolar diffusion following the formation of a central point mass. Our results demonstrate that, after the protostar first forms, ambipolar diffusion causes the magnetic flux to decouple in a growing region around the center. The decoupled field lines remain approximately stationary and drive a hydro","authors_text":"Arieh Konigl (Univ. of Chicago), Glenn E. Ciolek, Ioannis Contopoulos","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-04-10T23:00:21Z","title":"Self-Similar Collapse of Nonrotating Magnetic Molecular Cloud Cores"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9804114","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":"sha256:212917b414b43750870547f57e000890692cc891e41acad79d51dc5bc3bd84da","target":"record","created_at":"2026-07-04T16:06:18Z","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":"6a1d0e7b7799c46a02908193db56cecd0b358b2626deebc2d02a0df032f53812","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-04-10T23:00:21Z","title_canon_sha256":"70025146c1cd9d1946ecff63f885e121ddbfa0f61c0f887380b453fb5e869c4c"},"schema_version":"1.0","source":{"id":"astro-ph/9804114","kind":"arxiv","version":1}},"canonical_sha256":"ea900b80b8aabfb56fdc76d30dd8465067f8f1750a29e8da73356e7470c917df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea900b80b8aabfb56fdc76d30dd8465067f8f1750a29e8da73356e7470c917df","first_computed_at":"2026-07-04T16:06:18.151295Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:06:18.151295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rKJhVCnQERKzunhLxKDt9vdwwoorLIcSg8uFAHnpSKkHsllqK3pSmV4XvA/qc5q48wTjftCT7wAioiwMPh8SCw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:06:18.151661Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9804114","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:212917b414b43750870547f57e000890692cc891e41acad79d51dc5bc3bd84da","sha256:467d94354fdb7f16a3e3a750add39e97c1107c47657d5729871b8fdd232c4c72"],"state_sha256":"66a749e1813a8ea1be7bf355c5e55ad36f79af19f5c4358608aa8bad7f50d97f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5OvTLCrL6qG1XioaQ+AdGSH6ayysiH6rwBsu77x+mpWsc2gBRFMWiGDe/Sv9SPhPDglL/TynXpcS5vIPJkMcBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-29T06:54:59.093880Z","bundle_sha256":"c9431fa469ea832568d0a4bbc8f1d42e0bf312e1022d190d29d56b38349f5e94"}}