{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:B457G7YBF4RUMYFZWJSDGJQQXT","short_pith_number":"pith:B457G7YB","schema_version":"1.0","canonical_sha256":"0f3bf37f012f234660b9b264332610bce81ccdf8078b7f1551ceb33067c14205","source":{"kind":"arxiv","id":"1609.02493","version":2},"attestation_state":"computed","paper":{"title":"An Ordered Magnetic Field in the Protoplanetary Disk of AB Aur Revealed by Mid-Infrared Polarimetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Charles M. Telesco, Chris Packham, Christopher M. Wright, Dan Li, Eric Pantin, Han Zhang, Naib\\'i Mari\\~nas, Peter J. Barnes","submitted_at":"2016-09-08T16:56:46Z","abstract_excerpt":"Magnetic fields (B-fields) play a key role in the formation and evolution of protoplanetary disks, but their properties are poorly understood due to the lack of observational constraints. Using CanariCam at the 10.4-m Gran Telescopio Canarias, we have mapped out the mid-infrared polarization of the protoplanetary disk around the Herbig Ae star AB Aur. We detect ~0.44% polarization at 10.3 micron from AB Aur's inner disk (r < 80 AU), rising to ~1.4% at larger radii. Our simulations imply that the mid-infrared polarization of the inner disk arises from dichroic emission of elongated particles al"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1609.02493","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-09-08T16:56:46Z","cross_cats_sorted":[],"title_canon_sha256":"b4a0d9bf41097b33a5eb9fa02eff12e12b2a0751f583b29843f209684ac38f26","abstract_canon_sha256":"10f9fdd003093280ba90d9e7946d1a08eba5788a30759a44257b5650e3ec141e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:58:03.812224Z","signature_b64":"/UzkEFsuLPZ4k1kChgFdD/M7eeYBGhu4YdX1QUX/bSczoH+KpRJ42e88m6qJ4A2THoP9k5BTB5idVHSXrjsqCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0f3bf37f012f234660b9b264332610bce81ccdf8078b7f1551ceb33067c14205","last_reissued_at":"2026-05-18T00:58:03.811553Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:58:03.811553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An Ordered Magnetic Field in the Protoplanetary Disk of AB Aur Revealed by Mid-Infrared Polarimetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Charles M. Telesco, Chris Packham, Christopher M. Wright, Dan Li, Eric Pantin, Han Zhang, Naib\\'i Mari\\~nas, Peter J. Barnes","submitted_at":"2016-09-08T16:56:46Z","abstract_excerpt":"Magnetic fields (B-fields) play a key role in the formation and evolution of protoplanetary disks, but their properties are poorly understood due to the lack of observational constraints. Using CanariCam at the 10.4-m Gran Telescopio Canarias, we have mapped out the mid-infrared polarization of the protoplanetary disk around the Herbig Ae star AB Aur. We detect ~0.44% polarization at 10.3 micron from AB Aur's inner disk (r < 80 AU), rising to ~1.4% at larger radii. Our simulations imply that the mid-infrared polarization of the inner disk arises from dichroic emission of elongated particles al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.02493","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1609.02493","created_at":"2026-05-18T00:58:03.811665+00:00"},{"alias_kind":"arxiv_version","alias_value":"1609.02493v2","created_at":"2026-05-18T00:58:03.811665+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.02493","created_at":"2026-05-18T00:58:03.811665+00:00"},{"alias_kind":"pith_short_12","alias_value":"B457G7YBF4RU","created_at":"2026-05-18T12:30:07.202191+00:00"},{"alias_kind":"pith_short_16","alias_value":"B457G7YBF4RUMYFZ","created_at":"2026-05-18T12:30:07.202191+00:00"},{"alias_kind":"pith_short_8","alias_value":"B457G7YB","created_at":"2026-05-18T12:30:07.202191+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT","json":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT.json","graph_json":"https://pith.science/api/pith-number/B457G7YBF4RUMYFZWJSDGJQQXT/graph.json","events_json":"https://pith.science/api/pith-number/B457G7YBF4RUMYFZWJSDGJQQXT/events.json","paper":"https://pith.science/paper/B457G7YB"},"agent_actions":{"view_html":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT","download_json":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT.json","view_paper":"https://pith.science/paper/B457G7YB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1609.02493&json=true","fetch_graph":"https://pith.science/api/pith-number/B457G7YBF4RUMYFZWJSDGJQQXT/graph.json","fetch_events":"https://pith.science/api/pith-number/B457G7YBF4RUMYFZWJSDGJQQXT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT/action/storage_attestation","attest_author":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT/action/author_attestation","sign_citation":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT/action/citation_signature","submit_replication":"https://pith.science/pith/B457G7YBF4RUMYFZWJSDGJQQXT/action/replication_record"}},"created_at":"2026-05-18T00:58:03.811665+00:00","updated_at":"2026-05-18T00:58:03.811665+00:00"}