{"id":212577,"date":"2016-02-24T18:52:44","date_gmt":"2016-02-24T21:52:44","guid":{"rendered":"http:\/\/revistapesquisa.fapesp.br\/?p=212577"},"modified":"2016-02-24T18:52:44","modified_gmt":"2016-02-24T21:52:44","slug":"a-giant-awakens","status":"publish","type":"post","link":"https:\/\/revistapesquisa.fapesp.br\/en\/a-giant-awakens\/","title":{"rendered":"A giant awakens"},"content":{"rendered":"<div id=\"attachment_212578\" style=\"max-width: 300px\" class=\"wp-caption alignright\"><a href=\"http:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2016\/02\/012-013_Tecnociencia_236-02.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-212578\" src=\"http:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2016\/02\/012-013_Tecnociencia_236-02-300x115.jpg\" alt=\"The Milky Way glutton: black hole Sagittarius A* emits X-rays as it feeds on material from G2 object\" width=\"290\" height=\"111\" \/><p class=\"wp-caption-text\"><span class=\"media-credits-inline\">NASA \/ CXC\/ M. Weis<\/span><\/a> The Milky Way glutton: black hole Sagittarius A* emits X-rays as it feeds on material from G2 object<span class=\"media-credits\">NASA \/ CXC\/ M. Weis<\/span><\/p><\/div>\n<p>The black hole at the center of the Milky Way has been more active lately. Since mid-2014, astronomers in Europe and the United States have reported an increase in the frequency of X-ray emissions near Sagittarius A*, our galaxy&#8217;s black hole. Since regular monitoring of this region of space began about 15 years ago, Sagittarius A* had seemed relatively mild-mannered. X-ray bursts are typically detected in its vicinity once every 10 days. Flashes of high-energy light, invisible to the human eye, are emitted every time heated gas from the accretion disk falls towards the black hole. A little over a year ago, however, the frequency of these flashes increased tenfold, to once a day, a sign that Sagittarius A* had suddenly become more voracious (<em><i>MNRAS<\/i><\/em>, in press)<em><i>.<\/i><\/em> Astronomers still don&#8217;t know whether this fluctuation is part of a natural cycle or the result of an object passing through the neighborhood. The flashes became more frequent six months after an object named G2, possibly a gas-enveloped star, approached the black hole.<\/p>\n","protected":false},"excerpt":{"rendered":"The black hole at the center of the Milky Way has been more active lately","protected":false},"author":475,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[168],"tags":[205],"coauthors":[785],"class_list":["post-212577","post","type-post","status-publish","format-standard","hentry","category-technoscience","tag-astronomy"],"acf":[],"_links":{"self":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/212577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/users\/475"}],"replies":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/comments?post=212577"}],"version-history":[{"count":0,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/212577\/revisions"}],"wp:attachment":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media?parent=212577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/categories?post=212577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/tags?post=212577"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/coauthors?post=212577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}