{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:Y7YVXD3E462XZJAC7CRSCJG6XQ","short_pith_number":"pith:Y7YVXD3E","canonical_record":{"source":{"id":"astro-ph/0107322","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-17T21:25:20Z","cross_cats_sorted":[],"title_canon_sha256":"e3d2cdd66146b17cb5077d22a0effe68070183cd7cb8fce583b65029bf87a4a6","abstract_canon_sha256":"3c34f0805434de52acd387bd596924727715ffa90237d052e7c39a5c968eedaf"},"schema_version":"1.0"},"canonical_sha256":"c7f15b8f64e7b57ca402f8a32124debc36da915711fda6cccf494a370c16c8ab","source":{"kind":"arxiv","id":"astro-ph/0107322","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0107322","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0107322v1","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0107322","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"pith_short_12","alias_value":"Y7YVXD3E462X","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"pith_short_16","alias_value":"Y7YVXD3E462XZJAC","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"pith_short_8","alias_value":"Y7YVXD3E","created_at":"2026-07-04T16:23:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:Y7YVXD3E462XZJAC7CRSCJG6XQ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0107322","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-17T21:25:20Z","cross_cats_sorted":[],"title_canon_sha256":"e3d2cdd66146b17cb5077d22a0effe68070183cd7cb8fce583b65029bf87a4a6","abstract_canon_sha256":"3c34f0805434de52acd387bd596924727715ffa90237d052e7c39a5c968eedaf"},"schema_version":"1.0"},"canonical_sha256":"c7f15b8f64e7b57ca402f8a32124debc36da915711fda6cccf494a370c16c8ab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:23:43.375536Z","signature_b64":"5bwbTSSZu8PKoNE22eMsnitELXLe+O8EjmAxAq+Yt+6LdhTQxwVggWjvU9BcqOmwesAKlgAg6hr4ey8APrfOBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7f15b8f64e7b57ca402f8a32124debc36da915711fda6cccf494a370c16c8ab","last_reissued_at":"2026-07-04T16:23:43.375107Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:23:43.375107Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0107322","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":"2026-07-04T16:23:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LkwMhX+h1rHva7HPNYX1953huyiX+sSxUdoFlrRmZLcvHC8qnAs3c9y2eAgui6T827tkL8CjJbl1KHtG1mW/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:56:31.441395Z"},"content_sha256":"dd12e7cf988c6ef0bac45dd1e58dd08f335447dd43dc512f013998a783d90d76","schema_version":"1.0","event_id":"sha256:dd12e7cf988c6ef0bac45dd1e58dd08f335447dd43dc512f013998a783d90d76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:Y7YVXD3E462XZJAC7CRSCJG6XQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interferometric Mapping of Magnetic Fields in Star-forming Regions I. W51 e1/e2 Molecular Cores","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Jose M. Girart, Ramprasad Rao (University of Illionis), Richard M. Crutcher, Shih-Ping Lai","submitted_at":"2001-07-17T21:25:20Z","abstract_excerpt":"We present the first interferometric polarization map of the W51 e1/e2 molecular cores obtained with the BIMA array at 1.3 mm wavelength with approximately 3 arcsecond resolution. The polarization angle varies smoothly across the double cores with an average position angle of 23+-5 degrees for W51 e1 and 15+-7 degrees for W51 e2. The inferred magnetic field direction is parallel to the minor axis of the double cores, which is consistent with the theoretical picture that clouds collapse along the field lines. However, the magnetic field may not determine the axis of angular momentum of these tw"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0107322","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/0107322/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":"2026-07-04T16:23:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sYsd95N+qqrkSSFuW8kQTNTRoOFCrVG0mdBkjcmeHDLfv/2NBX9PhpG1fDOeYAa27JmZv0xVJwhWDX8TM/LTAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:56:31.441892Z"},"content_sha256":"c67480fb4e8f74fe364978dad7ce392380cef8a196b736176a6e139487f6a8fe","schema_version":"1.0","event_id":"sha256:c67480fb4e8f74fe364978dad7ce392380cef8a196b736176a6e139487f6a8fe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ/bundle.json","state_url":"https://pith.science/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ/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":"2026-08-03T18:56:31Z","links":{"resolver":"https://pith.science/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ","bundle":"https://pith.science/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ/bundle.json","state":"https://pith.science/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y7YVXD3E462XZJAC7CRSCJG6XQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:Y7YVXD3E462XZJAC7CRSCJG6XQ","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":"3c34f0805434de52acd387bd596924727715ffa90237d052e7c39a5c968eedaf","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-17T21:25:20Z","title_canon_sha256":"e3d2cdd66146b17cb5077d22a0effe68070183cd7cb8fce583b65029bf87a4a6"},"schema_version":"1.0","source":{"id":"astro-ph/0107322","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0107322","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0107322v1","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0107322","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"pith_short_12","alias_value":"Y7YVXD3E462X","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"pith_short_16","alias_value":"Y7YVXD3E462XZJAC","created_at":"2026-07-04T16:23:43Z"},{"alias_kind":"pith_short_8","alias_value":"Y7YVXD3E","created_at":"2026-07-04T16:23:43Z"}],"graph_snapshots":[{"event_id":"sha256:c67480fb4e8f74fe364978dad7ce392380cef8a196b736176a6e139487f6a8fe","target":"graph","created_at":"2026-07-04T16:23:43Z","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/0107322/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first interferometric polarization map of the W51 e1/e2 molecular cores obtained with the BIMA array at 1.3 mm wavelength with approximately 3 arcsecond resolution. The polarization angle varies smoothly across the double cores with an average position angle of 23+-5 degrees for W51 e1 and 15+-7 degrees for W51 e2. The inferred magnetic field direction is parallel to the minor axis of the double cores, which is consistent with the theoretical picture that clouds collapse along the field lines. However, the magnetic field may not determine the axis of angular momentum of these tw","authors_text":"Jose M. Girart, Ramprasad Rao (University of Illionis), Richard M. Crutcher, Shih-Ping Lai","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-07-17T21:25:20Z","title":"Interferometric Mapping of Magnetic Fields in Star-forming Regions I. W51 e1/e2 Molecular Cores"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0107322","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:dd12e7cf988c6ef0bac45dd1e58dd08f335447dd43dc512f013998a783d90d76","target":"record","created_at":"2026-07-04T16:23:43Z","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":"3c34f0805434de52acd387bd596924727715ffa90237d052e7c39a5c968eedaf","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-07-17T21:25:20Z","title_canon_sha256":"e3d2cdd66146b17cb5077d22a0effe68070183cd7cb8fce583b65029bf87a4a6"},"schema_version":"1.0","source":{"id":"astro-ph/0107322","kind":"arxiv","version":1}},"canonical_sha256":"c7f15b8f64e7b57ca402f8a32124debc36da915711fda6cccf494a370c16c8ab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7f15b8f64e7b57ca402f8a32124debc36da915711fda6cccf494a370c16c8ab","first_computed_at":"2026-07-04T16:23:43.375107Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:43.375107Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5bwbTSSZu8PKoNE22eMsnitELXLe+O8EjmAxAq+Yt+6LdhTQxwVggWjvU9BcqOmwesAKlgAg6hr4ey8APrfOBA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:43.375536Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0107322","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd12e7cf988c6ef0bac45dd1e58dd08f335447dd43dc512f013998a783d90d76","sha256:c67480fb4e8f74fe364978dad7ce392380cef8a196b736176a6e139487f6a8fe"],"state_sha256":"7479e3fa5a36588996e8c8da0de8269d6ae84f2e7e0a9710950f9dfec326b8a7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eoqodqU8dbpegmhhDpZGLVR7U7Ei8boL9wxrvoBZA0xnzn0zxbnnEzyqTK2BumeEhCm+hWkXjHK42ZRjxpOlCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:56:31.445867Z","bundle_sha256":"08e007103b615eaa3428e6366d73ae7e767418cb5393adbfe27f694cc7f9a69f"}}