{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:RRRJKRX5TMWEFIWMSA5CWGHQPL","short_pith_number":"pith:RRRJKRX5","canonical_record":{"source":{"id":"1706.03806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-12T18:46:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"58f78fe32c19b26d1b44280abd3184841b190ac9483f99f5062e7e2618b3e750","abstract_canon_sha256":"10a65b248ecff593304a369ea16ea3cad21d1c6dfb52f99816c8dd787dda51e9"},"schema_version":"1.0"},"canonical_sha256":"8c629546fd9b2c42a2cc903a2b18f07ad0917c501d3c886e5224e9e0f6c275bd","source":{"kind":"arxiv","id":"1706.03806","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.03806","created_at":"2026-05-18T00:41:23Z"},{"alias_kind":"arxiv_version","alias_value":"1706.03806v1","created_at":"2026-05-18T00:41:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.03806","created_at":"2026-05-18T00:41:23Z"},{"alias_kind":"pith_short_12","alias_value":"RRRJKRX5TMWE","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RRRJKRX5TMWEFIWM","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RRRJKRX5","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:RRRJKRX5TMWEFIWMSA5CWGHQPL","target":"record","payload":{"canonical_record":{"source":{"id":"1706.03806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-12T18:46:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"58f78fe32c19b26d1b44280abd3184841b190ac9483f99f5062e7e2618b3e750","abstract_canon_sha256":"10a65b248ecff593304a369ea16ea3cad21d1c6dfb52f99816c8dd787dda51e9"},"schema_version":"1.0"},"canonical_sha256":"8c629546fd9b2c42a2cc903a2b18f07ad0917c501d3c886e5224e9e0f6c275bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:41:23.789487Z","signature_b64":"izsRg5WNk6ABhMQ5Bv//Cixuil8dIlBTx465wKbhbHcyh5t3y6u8kSBsSFkGMH6jq6oaJ+K8jFutlWKej2OhCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c629546fd9b2c42a2cc903a2b18f07ad0917c501d3c886e5224e9e0f6c275bd","last_reissued_at":"2026-05-18T00:41:23.788787Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:41:23.788787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.03806","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":"2026-05-18T00:41:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IZUvPGR8NbI3R2pL3YK2RU+8sI/alzOGCx3KxnYo59nNMeObCOehiMVNJuz32ouFZIU3PS5AgTlnvP4pntc/Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:11:56.609569Z"},"content_sha256":"0927a636dec28646e634215e105b6fc7fc4bd6575148acbebe9e3305677c3b5d","schema_version":"1.0","event_id":"sha256:0927a636dec28646e634215e105b6fc7fc4bd6575148acbebe9e3305677c3b5d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:RRRJKRX5TMWEFIWMSA5CWGHQPL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unveiling the Role of the Magnetic Field at the Smallest Scales of Star Formation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Alyssa A. Goodman, Blakesley Burkhart, Charles L. H. Hull, Josep M. Girart, Lars Hernquist, Paulo C. Cort\\'es, Philip Mocz, Shih-Ping Lai, Volker Springel, Zhi-Yun Li","submitted_at":"2017-06-12T18:46:05Z","abstract_excerpt":"We report ALMA observations of polarized dust emission from the protostellar source Ser-emb 8 at a linear resolution of 140 au. Assuming models of dust-grain alignment hold, the observed polarization pattern gives a projected view of the magnetic field structure in this source. Contrary to expectations based on models of strongly magnetized star formation, the magnetic field in Ser-emb 8 does not exhibit an hourglass morphology. Combining the new ALMA data with previous observational studies, we can connect magnetic field structure from protostellar core (~80,000 au) to disk (~100 au) scales. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.03806","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":"2026-05-18T00:41:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KfWmITnVVUG8weAkq4F/tjvlG5sV4OyjQGOhDH4oauAsWdHG2iaXyrqPtff/VUhVox1c7GUh+4rI0X5iI0cACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:11:56.610291Z"},"content_sha256":"af4a655f4a9149385710db2bc93ef36769661301921243471fdd0e957d52914a","schema_version":"1.0","event_id":"sha256:af4a655f4a9149385710db2bc93ef36769661301921243471fdd0e957d52914a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL/bundle.json","state_url":"https://pith.science/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL/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":"2026-05-25T23:11:56Z","links":{"resolver":"https://pith.science/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL","bundle":"https://pith.science/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL/bundle.json","state":"https://pith.science/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RRRJKRX5TMWEFIWMSA5CWGHQPL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RRRJKRX5TMWEFIWMSA5CWGHQPL","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":"10a65b248ecff593304a369ea16ea3cad21d1c6dfb52f99816c8dd787dda51e9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-12T18:46:05Z","title_canon_sha256":"58f78fe32c19b26d1b44280abd3184841b190ac9483f99f5062e7e2618b3e750"},"schema_version":"1.0","source":{"id":"1706.03806","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.03806","created_at":"2026-05-18T00:41:23Z"},{"alias_kind":"arxiv_version","alias_value":"1706.03806v1","created_at":"2026-05-18T00:41:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.03806","created_at":"2026-05-18T00:41:23Z"},{"alias_kind":"pith_short_12","alias_value":"RRRJKRX5TMWE","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RRRJKRX5TMWEFIWM","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RRRJKRX5","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:af4a655f4a9149385710db2bc93ef36769661301921243471fdd0e957d52914a","target":"graph","created_at":"2026-05-18T00:41:23Z","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 report ALMA observations of polarized dust emission from the protostellar source Ser-emb 8 at a linear resolution of 140 au. Assuming models of dust-grain alignment hold, the observed polarization pattern gives a projected view of the magnetic field structure in this source. Contrary to expectations based on models of strongly magnetized star formation, the magnetic field in Ser-emb 8 does not exhibit an hourglass morphology. Combining the new ALMA data with previous observational studies, we can connect magnetic field structure from protostellar core (~80,000 au) to disk (~100 au) scales. ","authors_text":"Alyssa A. Goodman, Blakesley Burkhart, Charles L. H. Hull, Josep M. Girart, Lars Hernquist, Paulo C. Cort\\'es, Philip Mocz, Shih-Ping Lai, Volker Springel, Zhi-Yun Li","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-12T18:46:05Z","title":"Unveiling the Role of the Magnetic Field at the Smallest Scales of Star Formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.03806","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":"sha256:0927a636dec28646e634215e105b6fc7fc4bd6575148acbebe9e3305677c3b5d","target":"record","created_at":"2026-05-18T00:41:23Z","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":"10a65b248ecff593304a369ea16ea3cad21d1c6dfb52f99816c8dd787dda51e9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-12T18:46:05Z","title_canon_sha256":"58f78fe32c19b26d1b44280abd3184841b190ac9483f99f5062e7e2618b3e750"},"schema_version":"1.0","source":{"id":"1706.03806","kind":"arxiv","version":1}},"canonical_sha256":"8c629546fd9b2c42a2cc903a2b18f07ad0917c501d3c886e5224e9e0f6c275bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c629546fd9b2c42a2cc903a2b18f07ad0917c501d3c886e5224e9e0f6c275bd","first_computed_at":"2026-05-18T00:41:23.788787Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:41:23.788787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"izsRg5WNk6ABhMQ5Bv//Cixuil8dIlBTx465wKbhbHcyh5t3y6u8kSBsSFkGMH6jq6oaJ+K8jFutlWKej2OhCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:41:23.789487Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.03806","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0927a636dec28646e634215e105b6fc7fc4bd6575148acbebe9e3305677c3b5d","sha256:af4a655f4a9149385710db2bc93ef36769661301921243471fdd0e957d52914a"],"state_sha256":"ce4af2192fe8bbe50a31d5a12e5199235a369ea952daeccc798b56a8d5e5e314"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tAAamU7fI3IfIMfH8eu2e8Ewp323pPzIBNo6qJwt0Ne2nMAmDJX8u5nZ8Wl8Kr3WaaqOOwl1rfNtnXjXhHcVDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:11:56.613679Z","bundle_sha256":"14349d2595202d80ae129b78eab06e6f7fc0a34c529c8dab96a4c73cb6ba69b9"}}