{"id":5363,"date":"2021-06-24T14:58:25","date_gmt":"2021-06-24T12:58:25","guid":{"rendered":"https:\/\/www.mi.uni-koeln.de\/NumSim\/?p=5363"},"modified":"2021-06-24T15:03:41","modified_gmt":"2021-06-24T13:03:41","slug":"snapshot-evolution-of-a-magnetized-torus-differentially-rotating-around-a-static-point-mass","status":"publish","type":"post","link":"https:\/\/www.mi.uni-koeln.de\/NumSim\/2021\/06\/24\/snapshot-evolution-of-a-magnetized-torus-differentially-rotating-around-a-static-point-mass\/","title":{"rendered":"Snapshot: Evolution of a magnetized torus differentially rotating around a static point mass"},"content":{"rendered":"\r\n<div class=\"wp-block-columns is-layout-flex wp-container-2 wp-block-columns-is-layout-flex\">\r\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis: 100%;\">\r\n<p class=\"wp-block-preformatted\">Evolution of a magnetized torus differentially rotating around a static point mass. [1] The torus gradually forms into an accretion disk with expanding filaments into the surrounding space due to magneto-rotational instabilities similar to the rich structure of the corona of our sun. The simulation was done with a new Discontinuous-Galerkin based MHD solver [2] in FLASH [3]. Fig. 1 and Fig. 2 show the log. scale density cross section in the x-y and x-z plane. Fig 3 highlights the rich structure of the magnetic field (white stream lines) overlayed on top of the log. scale magnetic pressure in the x-z plane.<\/p>\r\n<\/div>\r\n<\/div>\r\n\r\n\r\n\r\n<figure class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\r\n<ul class=\"blocks-gallery-grid\">\r\n<li class=\"blocks-gallery-item\">\r\n<figure><a href=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-7.png\"><img decoding=\"async\" loading=\"lazy\" width=\"784\" height=\"732\" class=\"wp-image-5364\" src=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-7.png\" alt=\"\" data-id=\"5364\" data-link=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/?attachment_id=5364\" srcset=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-7.png 784w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-7-300x280.png 300w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-7-768x717.png 768w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-7-321x300.png 321w\" sizes=\"(max-width: 784px) 100vw, 784px\" \/><\/a><\/figure>\r\n<\/li>\r\n<li class=\"blocks-gallery-item\">\r\n<figure><a href=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-8.png\"><img decoding=\"async\" loading=\"lazy\" width=\"769\" height=\"732\" class=\"wp-image-5365\" src=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-8.png\" alt=\"\" data-id=\"5365\" data-link=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/?attachment_id=5365\" srcset=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-8.png 769w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-8-300x286.png 300w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-8-315x300.png 315w\" sizes=\"(max-width: 769px) 100vw, 769px\" \/><\/a><\/figure>\r\n<\/li>\r\n<li class=\"blocks-gallery-item\">\r\n<figure><a href=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6.png\"><img decoding=\"async\" loading=\"lazy\" width=\"779\" height=\"732\" class=\"wp-image-5366\" src=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6.png\" alt=\"\" data-id=\"5366\" data-full-url=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6.png\" data-link=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/?attachment_id=5366\" srcset=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6.png 779w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6-300x282.png 300w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6-768x722.png 768w, https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/image-6-319x300.png 319w\" sizes=\"(max-width: 779px) 100vw, 779px\" \/><\/a><\/figure>\r\n<\/li>\r\n<li>\u00a0<\/li>\r\n<\/ul>\r\n<\/figure>\r\n\r\n\r\n\r\n<figure class=\"wp-block-gallery aligncenter columns-1 is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\r\n<ul class=\"blocks-gallery-grid\">\r\n<li class=\"blocks-gallery-item\">\r\n<figure><a href=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/Torus_optimized.gif\"><img decoding=\"async\" loading=\"lazy\" width=\"500\" height=\"500\" class=\"wp-image-5368 aligncenter\" src=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/Torus_optimized.gif\" alt=\"\" data-id=\"5368\" data-full-url=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-content\/uploads\/2021\/06\/Torus_optimized.gif\" data-link=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/?attachment_id=5368\" \/><\/a><\/figure>\r\n<\/li>\r\n<\/ul>\r\n<\/figure>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n<p class=\"wp-block-preformatted\">[1] Machida, Mami, Mitsuru R. Hayashi, and R. Matsumoto. <br \/>&#8220;Global simulations of differentially rotating magnetized disks:<br \/>Formation of low-beta filaments and structured coronae.&#8221;<br \/>The Astrophysical Journal Letters 532.1 (2000): L67.<br \/>[2] Markert et al. &#8220;A Discontinuous Galerkin Method with Sub\u2011Cell Adaptive Shock Capturing for<br \/>FLASH&#8221; (in preparation)<br \/>[3] <a href=\"http:\/\/flash.uchicago.edu\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/flash.uchicago.edu\/<\/a><\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>Evolution of a magnetized torus differentially rotating around a static point mass. [1] The torus gradually forms into an accretion disk with expanding filaments into the surrounding space due to magneto-rotational instabilities similar to the rich structure of the corona &hellip; <a href=\"https:\/\/www.mi.uni-koeln.de\/NumSim\/2021\/06\/24\/snapshot-evolution-of-a-magnetized-torus-differentially-rotating-around-a-static-point-mass\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/posts\/5363"}],"collection":[{"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/comments?post=5363"}],"version-history":[{"count":7,"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/posts\/5363\/revisions"}],"predecessor-version":[{"id":5376,"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/posts\/5363\/revisions\/5376"}],"wp:attachment":[{"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/media?parent=5363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/categories?post=5363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mi.uni-koeln.de\/NumSim\/wp-json\/wp\/v2\/tags?post=5363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}