{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"7219ff815f0d6ce40a04e4bf36137cedee082a673660caa66567f6ad092ec1e3","created":"2026-10-03T07:17:50Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"51a515f74c6e6567690740bf9cdbf9aab7910c89a7daf54144e975a4f48f66a6","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"astro.solar-interior-cycle","field":"astro","n":"1","review_cite":"R. H. Cameron, M. Dikpati, A. Brandenburg, The global solar dynamo, Space Science Reviews, 2017","review_link":"https://arxiv.org/abs/1602.01754","review_verified":"true","summary":"The Sun's magnetic activity rises and falls in an 11-year cycle that sometimes stops for decades, and its measured surface composition disagrees with what sound waves inside it imply. Neither has a complete explanation.","title":"Solar dynamo, activity cycle and composition","topic_ref":null,"why":"The Sun is the best-observed star, so its interior tests the models used for all other stars, and its cycle sets long-term space weather."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"198e5d8c650c549166ecfcbee7e1125fa6cc28a6930904820f971b95ad0953ee","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"aa05936069823b595590c76fd0871f3d0a3932303faa49c4acd446fe8eb67631","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"VzyGUS_My2eRM0PRqySnoSXW2U5IclAQkrzpMtBuDvcI9wHKB_o6TFB1TKBsHoZyCNQ4x2yEUm8nZHbvzXkvAA"},"schema":"pubphys.envelope/1"},"record_hash":"198e5d8c650c549166ecfcbee7e1125fa6cc28a6930904820f971b95ad0953ee","leaf_index":54}