{"version":"1.0","provider_name":"KMI - Nagoya University","provider_url":"https:\/\/www.kmi.nagoya-u.ac.jp\/eng","title":"Non-linear dynamics of axion clouds around a rotating black hole and its observation by gravitational waves - KMI - Nagoya University","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"kNFf1UOLV1\"><a href=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/944\/\">Non-linear dynamics of axion clouds around a rotating black hole and its observation by gravitational waves<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.kmi.nagoya-u.ac.jp\/eng\/seminar\/944\/embed\/#?secret=kNFf1UOLV1\" width=\"600\" height=\"338\" title=\"&#8220;Non-linear dynamics of axion clouds around a rotating black hole and its observation by gravitational waves&#8221; &#8212; KMI - Nagoya University\" data-secret=\"kNFf1UOLV1\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","description":"In these five years, we have continued the investigation of the dynamical evolution of\u00a0superradiantly unstable axion clouds around a Kerr black hole taking account of non-linear selfinteraction\u00a0of the axion field by a 3D relativistic numerical simulations. As a result, we have realized\u00a0repeated occurrence of bosenova collapse and superradiant growth of an axion cloud by numerical\u00a0simulations for the first time and clarified its features quantitatively. Further, on the basis of that, we\u00a0have calculated gravitational wave emissions from the axion cloud and &hellip;"}