{"corpus_id":120004092,"paper_sha":"bbefe5aacf18d8fdf5f6e9ff817d4671145920b5","doi":"10.1029/JZ062I004P00509","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":1982012011,"dblp_id":null,"acl_id":null,"title":"Sweet's mechanism for merging magnetic fields in conducting fluids","year":1957,"publication_date":"1957-12-01","venue":"","journal":{"name":"Journal of Geophysical Research","pages":"509-520","volume":"62"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Physics"],"reference_count":4,"citation_count":1305,"influential_citation_count":84,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Sweet's mechanism for the merging of two oppositely directed magnetic fields in a highly conducting fluid is investigated in a semi-quantitative manner. It is shown that two oppositely directed sunspot fields with scales of 104 km could be merged by Sweet's mechanism, if shoved firmly together, in about two weeks; their normal interdiffusion time would be of the order of 600 years. It is suggested that Sweet's mechanism may be of considerable astrophysical importance: It gives a means of altering quickly the configuration of magnetic fields in ionized gases, allowing a stable field to go over into an unstable configuration, subsequently converting much of the magnetic energy into kinetic energy of the fluid.","claims":[{"public_id":"cl_fc6fdc5a9072798503665fe52be18451","status":"active","text":"Sweet's mechanism provides a way to rapidly alter the configuration of magnetic fields in ionized gases and can convert much of the magnetic energy into kinetic energy of the fluid.","confidence":0.92,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_fc6fdc5a9072798503665fe52be18451"},{"public_id":"cl_58375554b69aaa4fdd39d8d77103bf2e","status":"active","text":"The corresponding normal interdiffusion time for those sunspot fields would be of the order of 600 years.","confidence":0.95,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_58375554b69aaa4fdd39d8d77103bf2e"},{"public_id":"cl_d7b4a91afc39fb87613de0efd69b0454","status":"active","text":"Two oppositely directed sunspot fields with scales of 10^4 km could be merged by Sweet's mechanism in about two weeks if pushed firmly together.","confidence":0.97,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_d7b4a91afc39fb87613de0efd69b0454"}],"concepts":[{"public_id":"co_0d5bc3b3aa0d7bbb761213333d21a7dc","status":"active","name":"Sweet's mechanism","description":"A reconnection process for merging oppositely directed magnetic fields in a highly conducting 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