{"id":89269,"date":"2021-12-13T11:32:38","date_gmt":"2021-12-13T10:32:38","guid":{"rendered":"http:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a.jpg"},"modified":"2021-12-13T11:33:40","modified_gmt":"2021-12-13T10:33:40","slug":"esos-vlti-images-of-stars-at-the-centre-of-the-milky-way","status":"inherit","type":"attachment","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2021\/12\/14\/nr-85-2021\/esos-vlti-images-of-stars-at-the-centre-of-the-milky-way\/","title":{"rendered":"ESO\u2019s VLTI images of stars at the centre of the Milky Way"},"author":2,"comment_status":"open","ping_status":"closed","template":"","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"description":{"rendered":"<p class=\"attachment\"><a href='https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a.jpg'><img decoding=\"async\" width=\"300\" height=\"123\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-300x123.jpg\" class=\"attachment-medium size-medium\" alt=\"\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-300x123.jpg 300w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-1024x419.jpg 1024w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-768x314.jpg 768w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-200x82.jpg 200w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a.jpg 1280w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n"},"caption":{"rendered":"<p>These annotated images, obtained with the GRAVITY instrument on ESO\u2019s Very Large Telescope Interferometer (VLTI) between March and July 2021, show stars orbiting very close to Sgr A*, the supermassive black hole at the heart of the Milky Way. One of these stars, named S29, was observed as it was making its closest approach to the black hole at 13 billion kilometres, just 90 times the distance between the Sun and Earth. Another star, named S300, was detected for the first time in the new VLTI observations. To obtain the new images, the astronomers used a machine-learning technique, called Information Field Theory. They made a model of how the real sources may look, simulated how GRAVITY would see them, and compared this simulation with GRAVITY observations. This allowed them to find and track stars around Sagittarius A* with unparalleled depth and accuracy.<\/p>\n"},"alt_text":"","media_type":"image","mime_type":"image\/jpeg","media_details":{"width":1280,"height":524,"file":"2021\/12\/eso2119a.jpg","sizes":{"medium":{"file":"eso2119a-300x123.jpg","width":300,"height":123,"mime_type":"image\/jpeg","source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-300x123.jpg"},"large":{"file":"eso2119a-1024x419.jpg","width":1024,"height":419,"mime_type":"image\/jpeg","source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-1024x419.jpg"},"thumbnail":{"file":"eso2119a-150x150.jpg","width":150,"height":150,"mime_type":"image\/jpeg","source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-150x150.jpg"},"medium_large":{"file":"eso2119a-768x314.jpg","width":768,"height":314,"mime_type":"image\/jpeg","source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-768x314.jpg"},"rss-image":{"file":"eso2119a-200x82.jpg","width":200,"height":82,"mime_type":"image\/jpeg","source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a-200x82.jpg"},"full":{"file":"eso2119a.jpg","width":1280,"height":524,"mime_type":"image\/jpeg","source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a.jpg"}},"image_meta":{"aperture":"0","credit":"ESO\/GRAVITY collaboration","camera":"","caption":"These annotated images, obtained with the GRAVITY instrument on ESO\u2019s Very Large Telescope Interferometer (VLTI) between March and July 2021, show stars orbiting very close to Sgr A*, the supermassive black hole at the heart of the Milky Way. One of these stars, named S29, was observed as it was making its closest approach to the black hole at 13 billion kilometres, just 90 times the distance between the Sun and Earth. Another star, named S300, was detected for the first time in the new VLTI observations. To obtain the new images, the astronomers used a machine-learning technique, called Information Field Theory. They made a model of how the real sources may look, simulated how GRAVITY would see them, and compared this simulation with GRAVITY observations. This allowed them to find and track stars around Sagittarius A* with unparalleled depth and accuracy.","created_timestamp":"1639497600","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"ESO\u2019s VLTI images of stars at the centre of the Milky Way","orientation":"0","keywords":["Sagittarius A*"]}},"post":89267,"source_url":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2021\/12\/eso2119a.jpg","_links":{"self":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media\/89269"}],"collection":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media"}],"about":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/types\/attachment"}],"author":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/comments?post=89269"}]}}