{"id":2002,"date":"2026-08-29T12:20:00","date_gmt":"2026-08-29T12:20:00","guid":{"rendered":"https:\/\/netguide.io\/news\/?p=2002"},"modified":"2026-08-27T23:17:35","modified_gmt":"2026-08-27T23:17:35","slug":"magnetar-vacuum-birefringence-quantum-effect-heisenberg","status":"publish","type":"post","link":"https:\/\/netguide.io\/news\/en\/2026\/08\/29\/magnetar-vacuum-birefringence-quantum-effect-heisenberg\/","title":{"rendered":"Empty Space Bends Light: Magnetar Confirms a 90-Year-Old Quantum Prediction"},"content":{"rendered":"<div id=\"netgu-197716247\" class=\"netgu-before-content netgu-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-6258556257245998\" \ndata-ad-slot=\"3494115342\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n<p class=\"wp-block-paragraph\"><strong>An international research team has found the first hints of &#8220;vacuum birefringence&#8221; around an extremely magnetic neutron star &ndash; a quantum effect Werner Heisenberg predicted nearly 90 years ago. Even seemingly empty space, it turns out, affects how light travels.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What Heisenberg predicted<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">According to quantum electrodynamics, a &#8220;perfect vacuum&#8221; is not truly empty but filled with virtual particles that constantly pop in and out of existence. In extremely strong magnetic fields, these should make the vacuum optically active &ndash; &#8220;birefringent&#8221; for the light passing through. On Earth the effect is far too weak to measure; a magnetar with its gigantic magnetic field provides the cosmic laboratory for it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The evidence<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The team observed the magnetar 1E 1547.0\u20135408 with NASA\u2019s IXPE X-ray telescope, supported by the NICER instrument on the ISS and CSIRO\u2019s Parkes radio telescope. Two signatures point to the effect: the X-rays were extremely highly polarized, and the polarization direction was &#8220;locked&#8221; to the star\u2019s magnetic field &ndash; just like the radio waves. The results were published in the journal Nature.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Sources: <a href=\"https:\/\/www.nature.com\/articles\/s41586-026-10859-z\" target=\"_blank\" rel=\"noopener\">Nature<\/a>, <a href=\"https:\/\/www.sciencedaily.com\/releases\/2026\/08\/260826055445.htm\" target=\"_blank\" rel=\"noopener\">ScienceDaily<\/a>.<\/em><\/p>\n<div id=\"netgu-390946716\" class=\"netgu-after-content netgu-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-6258556257245998\" \ndata-ad-slot=\"4559785002\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A magnetar provides the first hints of &#8220;vacuum birefringence&#8221; \u2013 a quantum effect Heisenberg predicted nearly 90 years ago. Study published in Nature.<\/p>\n","protected":false},"author":1,"featured_media":1999,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[],"tags":[],"class_list":["post-2002","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts\/2002","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/comments?post=2002"}],"version-history":[{"count":1,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts\/2002\/revisions"}],"predecessor-version":[{"id":2010,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts\/2002\/revisions\/2010"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/media\/1999"}],"wp:attachment":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/media?parent=2002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/categories?post=2002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/tags?post=2002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}