{"id":3925979,"date":"2026-05-17T15:03:28","date_gmt":"2026-05-17T20:03:28","guid":{"rendered":"http:\/\/mikedyess.info\/para\/erosita-discovers-a-changing-look-seyfert-galaxy\/"},"modified":"2026-05-17T15:03:28","modified_gmt":"2026-05-17T20:03:28","slug":"erosita-discovers-a-changing-look-seyfert-galaxy","status":"publish","type":"post","link":"https:\/\/mikedyess.info\/para\/erosita-discovers-a-changing-look-seyfert-galaxy\/","title":{"rendered":"eROSITA discovers a &#8216;changing-look&#8217; Seyfert galaxy"},"content":{"rendered":"<div>Astronomers have tracked a dramatic &#8220;changing-look&#8221; active galactic nucleus (AGN) whose central supermassive black hole appeared to switch off and then rapidly reignite. The galaxy, HE 1237\u22122252, dimmed in X-rays by a factor of 17 within just 18 months before recovering again. The paper outlining its analysis was uploaded to the arXiv preprint server on May 8.<\/div>\n<p><a target=\"_blank\" href=\"https:\/\/phys.org\/news\/2026-05-erosita-seyfert-galaxy.html\" target=\"_blank\">Go to Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Astronomers have tracked a dramatic &#8220;changing-look&#8221; active galactic nucleus (AGN) whose central supermassive black hole appeared to switch off and then rapidly reignite. The galaxy, HE 1237\u22122252, dimmed in X-rays by a factor of 17 within just 18 months before recovering again. The paper outlining its analysis was uploaded to the arXiv preprint server on [&#8230;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-3925979","post","type-post","status-publish","format-standard","hentry","category-astronomy","odd"],"_links":{"self":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/posts\/3925979","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/comments?post=3925979"}],"version-history":[{"count":0,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/posts\/3925979\/revisions"}],"wp:attachment":[{"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/media?parent=3925979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/categories?post=3925979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mikedyess.info\/para\/wp-json\/wp\/v2\/tags?post=3925979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}