{"id":42499,"date":"2026-08-24T21:49:52","date_gmt":"2026-08-24T19:49:52","guid":{"rendered":"https:\/\/karmaka.de\/?p=42499"},"modified":"2026-08-24T22:03:20","modified_gmt":"2026-08-24T20:03:20","slug":"paleomagnetic-evidence-for-a-nebular-magnetic-field-from-calcium-aluminum-rich-inclusions","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=42499","title":{"rendered":"Paleomagnetic evidence for a nebular magnetic field from calcium-aluminum-rich inclusions<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Cau\u00ea S. Borlina, Benjamin P. Weiss, Xue-Ning Bai, Po-Yen Tung, Richard J. Harrison, Elias N. Mansbach, Nilanjan Chatterjee, Fran\u00e7ois L. H. Tissot, and Kevin D. McKeegan<\/p>\n\n\n\n<p>PNAS, Vol. 123 | No. 36, 24 August 2026<\/p>\n\n\n\n<p><a href=\"https:\/\/www.pnas.org\/doi\/10.1073\/pnas.2521660123\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.pnas.org\/doi\/epdf\/10.1073\/pnas.2521660123\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The initial stage of planet formation is expected to take place in a nascent protoplanetary disk (PPD) accreting onto the protostar embedded in an infalling envelope. This stage is likely accompanied by the formation of high-condensation temperature solids resembling calcium-aluminum-rich inclusions (CAIs), the oldest known solar system solids. However, it is unknown whether magnetism and\/or gravity dominantly drove accretion in the youngest evolutionary stages of PPDs and the solar nebula. Here we report paleomagnetic measurements of CAIs indicating that they record a nebular magnetic field of \u223c150 to 600 \u03bcT. This intensity is consistent with magnetic fields playing a key role driving disk accretion while also heating the very inner disk to 103 K at the earliest stages of solar system formation.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cau\u00ea S. Borlina, Benjamin P. Weiss, Xue-Ning Bai, Po-Yen Tung, Richard J. Harrison, Elias N. Mansbach, Nilanjan Chatterjee, Fran\u00e7ois L. H. Tissot, and Kevin D. McKeegan PNAS, Vol. 123 | No. 36, 24 August 2026&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66,9,19,72,219,57,71],"tags":[1846,1718,3273,1317,973,1391,3701,1420,590,397,1015],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42499"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=42499"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42499\/revisions"}],"predecessor-version":[{"id":42501,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42499\/revisions\/42501"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}