{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:STGBWST3EHPZ3HDDNVO3MEQWNY","short_pith_number":"pith:STGBWST3","canonical_record":{"source":{"id":"1901.00242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-02T02:33:17Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"901af447c714d74b45ddf81a07e61dd5a11076cf172769c186bce55f4c812b0e","abstract_canon_sha256":"2087762edd7a1ae6fce7baa2f3727c302f2e7e0655b1daa2ecdc6d7fa25bf051"},"schema_version":"1.0"},"canonical_sha256":"94cc1b4a7b21df9d9c636d5db612166e02067812fafa3ccbddcd265c5a95f679","source":{"kind":"arxiv","id":"1901.00242","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.00242","created_at":"2026-05-17T23:54:15Z"},{"alias_kind":"arxiv_version","alias_value":"1901.00242v1","created_at":"2026-05-17T23:54:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.00242","created_at":"2026-05-17T23:54:15Z"},{"alias_kind":"pith_short_12","alias_value":"STGBWST3EHPZ","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"STGBWST3EHPZ3HDD","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"STGBWST3","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:STGBWST3EHPZ3HDDNVO3MEQWNY","target":"record","payload":{"canonical_record":{"source":{"id":"1901.00242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-02T02:33:17Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"901af447c714d74b45ddf81a07e61dd5a11076cf172769c186bce55f4c812b0e","abstract_canon_sha256":"2087762edd7a1ae6fce7baa2f3727c302f2e7e0655b1daa2ecdc6d7fa25bf051"},"schema_version":"1.0"},"canonical_sha256":"94cc1b4a7b21df9d9c636d5db612166e02067812fafa3ccbddcd265c5a95f679","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:15.408751Z","signature_b64":"liH6JarUJkQkaUbl+jmlC3Wh6mH3GBfymn1ADBrSoV1thR8JXcXVqUfvqWCT63Z8LTU2gnDa0CgFtkGo7s2fBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94cc1b4a7b21df9d9c636d5db612166e02067812fafa3ccbddcd265c5a95f679","last_reissued_at":"2026-05-17T23:54:15.408376Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:15.408376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.00242","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":"2026-05-17T23:54:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QC48VPqyHtiaeGxdo74D0gg0e0jUbhVjm49BhFZ4hT9fMU7Go4FXyDEsU0MCAor2+Um7Jr+xvDW7lE+zwDQuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:11:30.504382Z"},"content_sha256":"37adb2539ab2011c28e34330047c09e8a5566b5c36a605ac9442a79fe3e1cd7f","schema_version":"1.0","event_id":"sha256:37adb2539ab2011c28e34330047c09e8a5566b5c36a605ac9442a79fe3e1cd7f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:STGBWST3EHPZ3HDDNVO3MEQWNY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"JCMT POL-2 and ALMA polarimetric observations of 6000-100 au scales in the protostar B335: linking magnetic field and gas kinematics in observations and MHD simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Bo Zhao, Chin-Fei Lee, Hsi-Wei Yen, I-Ta Hsieh, Nagayoshi Ohashi, Patrick Koch, Ruben Krasnopolsky, Sheng-Yuan Liu, Shigehisa Takakuwa, Ya-Wen Tang, Zhi-Yun Li","submitted_at":"2019-01-02T02:33:17Z","abstract_excerpt":"We present our analysis of the magnetic field structures from 6000 au to 100 au scales in the Class 0 protostar B335 inferred from our JCMT POL-2 observations and the ALMA archival polarimetric data. To interpret the observational results, we perform a series of (non-)ideal MHD simulations of the collapse of a rotating non-turbulent dense core, whose initial conditions are adopted to be the same as observed in B335, and generate synthetic polarization maps. The comparison of our JCMT and simulation results suggests that the magnetic field on a 6000 au scale in B335 is pinched and well aligned "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.00242","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":"2026-05-17T23:54:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9+aNZXhpEdQ0kS1tw0uIjv1rX1XIo24Ez+/w6MSwroyV532ig5lQcDV0nRPfF+TVOsppSIxhnyBe59EDdtGYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:11:30.504911Z"},"content_sha256":"24d941a3599ec2254ffa37fe3ea07a315b2f793201ea7b61b0f2a52a2347cd44","schema_version":"1.0","event_id":"sha256:24d941a3599ec2254ffa37fe3ea07a315b2f793201ea7b61b0f2a52a2347cd44"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/STGBWST3EHPZ3HDDNVO3MEQWNY/bundle.json","state_url":"https://pith.science/pith/STGBWST3EHPZ3HDDNVO3MEQWNY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/STGBWST3EHPZ3HDDNVO3MEQWNY/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":"2026-05-31T23:11:30Z","links":{"resolver":"https://pith.science/pith/STGBWST3EHPZ3HDDNVO3MEQWNY","bundle":"https://pith.science/pith/STGBWST3EHPZ3HDDNVO3MEQWNY/bundle.json","state":"https://pith.science/pith/STGBWST3EHPZ3HDDNVO3MEQWNY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/STGBWST3EHPZ3HDDNVO3MEQWNY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:STGBWST3EHPZ3HDDNVO3MEQWNY","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":"2087762edd7a1ae6fce7baa2f3727c302f2e7e0655b1daa2ecdc6d7fa25bf051","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-02T02:33:17Z","title_canon_sha256":"901af447c714d74b45ddf81a07e61dd5a11076cf172769c186bce55f4c812b0e"},"schema_version":"1.0","source":{"id":"1901.00242","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.00242","created_at":"2026-05-17T23:54:15Z"},{"alias_kind":"arxiv_version","alias_value":"1901.00242v1","created_at":"2026-05-17T23:54:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.00242","created_at":"2026-05-17T23:54:15Z"},{"alias_kind":"pith_short_12","alias_value":"STGBWST3EHPZ","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"STGBWST3EHPZ3HDD","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"STGBWST3","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:24d941a3599ec2254ffa37fe3ea07a315b2f793201ea7b61b0f2a52a2347cd44","target":"graph","created_at":"2026-05-17T23:54:15Z","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 present our analysis of the magnetic field structures from 6000 au to 100 au scales in the Class 0 protostar B335 inferred from our JCMT POL-2 observations and the ALMA archival polarimetric data. To interpret the observational results, we perform a series of (non-)ideal MHD simulations of the collapse of a rotating non-turbulent dense core, whose initial conditions are adopted to be the same as observed in B335, and generate synthetic polarization maps. The comparison of our JCMT and simulation results suggests that the magnetic field on a 6000 au scale in B335 is pinched and well aligned ","authors_text":"Bo Zhao, Chin-Fei Lee, Hsi-Wei Yen, I-Ta Hsieh, Nagayoshi Ohashi, Patrick Koch, Ruben Krasnopolsky, Sheng-Yuan Liu, Shigehisa Takakuwa, Ya-Wen Tang, Zhi-Yun Li","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-02T02:33:17Z","title":"JCMT POL-2 and ALMA polarimetric observations of 6000-100 au scales in the protostar B335: linking magnetic field and gas kinematics in observations and MHD simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.00242","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":"sha256:37adb2539ab2011c28e34330047c09e8a5566b5c36a605ac9442a79fe3e1cd7f","target":"record","created_at":"2026-05-17T23:54:15Z","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":"2087762edd7a1ae6fce7baa2f3727c302f2e7e0655b1daa2ecdc6d7fa25bf051","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-02T02:33:17Z","title_canon_sha256":"901af447c714d74b45ddf81a07e61dd5a11076cf172769c186bce55f4c812b0e"},"schema_version":"1.0","source":{"id":"1901.00242","kind":"arxiv","version":1}},"canonical_sha256":"94cc1b4a7b21df9d9c636d5db612166e02067812fafa3ccbddcd265c5a95f679","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94cc1b4a7b21df9d9c636d5db612166e02067812fafa3ccbddcd265c5a95f679","first_computed_at":"2026-05-17T23:54:15.408376Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:15.408376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"liH6JarUJkQkaUbl+jmlC3Wh6mH3GBfymn1ADBrSoV1thR8JXcXVqUfvqWCT63Z8LTU2gnDa0CgFtkGo7s2fBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:15.408751Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.00242","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:37adb2539ab2011c28e34330047c09e8a5566b5c36a605ac9442a79fe3e1cd7f","sha256:24d941a3599ec2254ffa37fe3ea07a315b2f793201ea7b61b0f2a52a2347cd44"],"state_sha256":"4b0ae597b07920be53fd6ce74926ead2ad918cd97bf145383fb77688aaad8eeb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8O9jZDfRMYja9fDg/zxc8iGWRLe2oVqeEXP/aYhfnduxGKYwZmP4+I58Fof9dWtn+p32NnfginuC1VfnO2yTCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:11:30.507657Z","bundle_sha256":"bddbae99746baacd9ffdf1a642a96f7a39a54995828a829e378e7b0d872acde7"}}