{"id":14,"date":"2018-06-27T13:11:54","date_gmt":"2018-06-27T11:11:54","guid":{"rendered":"http:\/\/www.issibern.ch\/teams\/helicityastroplas\/?page_id=14"},"modified":"2018-06-27T13:11:54","modified_gmt":"2018-06-27T11:11:54","slug":"home","status":"publish","type":"page","link":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/","title":{"rendered":"Home"},"content":{"rendered":"<p><span style=\"font-size: 18pt\"><strong><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">Abstract<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">Magnetic helicity is a general measure of the twist and mutual linking of magnetic field\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">lines that has recently received wide attention from different areas of Astrophysics. We\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">propose an International Team formed by experts in magnetic helicity studies from different\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">disciplines, such as stellar dynamos, solar corona and coronal mass ejections, magnetic\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">turbulence and reconnection, both in theoretical models as well as in numerical\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">simulations and solar observations. The main objective of the International Team is to bring\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">helicity estimation methods that were developed in different fields under the same\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">theoretical framework, so that they can be meaningfully compared with each other, and\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">quantitatively benchmarked. In particular, we will consider helicity computations based on\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">spectral methods applied to periodic domains (as used in free decaying turbulence and\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">solar wind studies) and non-periodical domains (more typical of low-corona solar\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">applications), and compare them with the finite-volume and flux-injection methods typically\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">used in magneto-hydrodynamical simulations as well as in solar observations. Novel\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">methods applying helicity estimations to individual field lines and their application to\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">volume-filling fields will be also included. The comparison between different methods will\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">be performed using numerical simulations as controlled test-cases to provide quantitative\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">benchmarking and clear indications of the methods&#8217; limitations and assumptions. Their\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">application to observed solar data, on the other hand, will allow to confront such methods\u00a0<\/span><span style=\"font-family: tahoma, arial, helvetica, sans-serif\">with the additional complexity of real observations.<\/span><\/p>\n<p><a href=\"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-content\/uploads\/sites\/136\/2018\/06\/Valori_project_short.pdf\">Link to the full project.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Abstract Magnetic helicity is a general measure of the twist and mutual linking of magnetic field\u00a0lines that has recently received wide attention from different areas of Astrophysics. We\u00a0propose an International Team formed by experts in magnetic helicity studies from different\u00a0disciplines, &hellip; <a href=\"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-14","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/pages\/14","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/comments?post=14"}],"version-history":[{"count":0,"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/pages\/14\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.issibern.ch\/teams\/helicityastroplas\/wp-json\/wp\/v2\/media?parent=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}