{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"184002dba8f9012c7a2a016fb063de7a6460158740b3ea0edb4ca12fc988cf63","created":"2026-10-03T07:17:55Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"dd94c77789026c5b6b062bd83fa79ff18d3e2a2fc7514408b24acbb5ce27ae30","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"astro.solar-interior-cycle.dynamo-mechanism","kind":"phenomenon","literature_status":"open","n":"1","parents":[],"plain":"The Sun's magnetic cycle comes from a dynamo (gas motions regenerating the magnetic field), but whether it operates near the bottom of the convection zone or throughout it is unknown.","posed_since":"1955","precise":"Determine whether the solar cycle is a Babcock-Leighton flux-transport dynamo with toroidal (east-west) field generated and stored in the tachocline ($r \\sim 0.7\\,R_{\\mathrm{sun}}$) or a distributed dynamo in the convection zone. Answer: a model reproducing the butterfly diagram, the 22-year magnetic cycle period, polar-field reversal and helioseismic flows.","problem_ref":null,"references":"","settled_by":"Helioseismic detection of the toroidal field or its flow signatures at depth, together with a simulation reproducing the cycle at solar luminosity and rotation.","status_note":"","title":"Where and how does the solar dynamo generate the toroidal field?","topic_ref":"198e5d8c650c549166ecfcbee7e1125fa6cc28a6930904820f971b95ad0953ee"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"150b0f6f188f8536ee2a3128867b249df1dccf42adf7f4f0729ac8c4d33c8eef","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"ad14171553928bd11900159267634f6c356e94d532ba68b225753a49a27bb0e4","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"r9EERqYV63tNS1sbLWhzcyppR18RcG2rL8tQdenPH99ddASFcQie6xFIGzXz1-w6bJPHtLoeHJsoGGbF9MTIBQ"},"schema":"pubphys.envelope/1"},"record_hash":"150b0f6f188f8536ee2a3128867b249df1dccf42adf7f4f0729ac8c4d33c8eef","leaf_index":620}