{"id":8420,"date":"2023-09-10T13:02:41","date_gmt":"2023-09-10T13:02:41","guid":{"rendered":"https:\/\/power2innovate.com\/new-class-of-super-bright-exploding-transient-discovered\/"},"modified":"2023-09-10T13:02:41","modified_gmt":"2023-09-10T13:02:41","slug":"new-class-of-super-bright-exploding-transient-discovered","status":"publish","type":"post","link":"https:\/\/power2innovate.com\/new-class-of-super-bright-exploding-transient-discovered\/","title":{"rendered":"New class of super-bright exploding transient discovered"},"content":{"rendered":"<p> \n<\/p>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2023\/new-class-of-super-bri.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2023\/new-class-of-super-bri.jpg\" data-sub-html=\"Follow-up of AT 2022aedm. Left: multicolor light curves from UV to NIR. Arrows indicate upper limits. The inset shows the early ATLAS flux data with a second-order fit (also shown on the multicolor plot) and time above half-maximum. Taking the shallowest and steepest rises allowed by the ATLAS data changes the time of zero flux by \u22720.5 days. Right: spectroscopic follow-up. Spectra are labeled by telescope\/instrument and time since explosion in the rest frame. Credit: &lt;i&gt;The Astrophysical Journal Letters&lt;\/i&gt; (2023). DOI: 10.3847\/2041-8213\/acf0ba\">\n<figure class=\"article-img\">\n            <figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Follow-up of AT 2022aedm. Left: multicolor light curves from UV to NIR. Arrows indicate upper limits. The inset shows the early ATLAS flux data with a second-order fit (also shown on the multicolor plot) and time above half-maximum. Taking the shallowest and steepest rises allowed by the ATLAS data changes the time of zero flux by \u22720.5 days. Right: spectroscopic follow-up. Spectra are labeled by telescope\/instrument and time since explosion in the rest frame. Credit: <i>The Astrophysical Journal Letters<\/i> (2023). DOI: 10.3847\/2041-8213\/acf0ba<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>A large international team of astronomers and astrophysicists has discovered something new in the night sky\u2014a type of explosion that is much brighter than most supernovae and is called luminous fast cooler (LFC). In their paper published in <i>The Astrophysical Journal Letters,<\/i> the group describes the explosion, how it was found and what they have learned about it thus far.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>Previously, supernovae were believed to produce the brightest type of explosion in the known universe. They occur when stars run out of fuel and collapse in on themselves\u2014and then explode in a mighty burst of light and energy. Many such events have been recorded. But now, it appears that another phenomenon may challenge supernovae as the brightest type of explosion.\n<\/p>\n<p>An explosion was detected as team members were analyzing data captured by the ATLAS network of robotic telescopes. As the progression of the explosion unfolded, the researchers came to realize that what they were witnessing was not a supernova. In addition to its incredible brightness, it was located in a place where supernova do not occur\u2014a galaxy with billions of stars near in size to the sun. Thus, it was not likely such a galaxy would have a star big enough to become a supernova.\n<\/p>\n<p>The research team found that the explosion progressed much more quickly than any known supernova. Instead of taking 20 days to reach peak brightness and then ebbing over the following months, the event they were witnessing took just 15 days to reach its peak brightness and then ebbed away to nothing after just one month.\n<\/p>\n<p>Surprised by their observations, the researchers began sifting through archival telescope data and found two other instances of similar explosions\u2014one that occurred in 2020 and another in 2009. They suggest that such events are a previously unknown type of explosion of unknown cause. And because the find is still so new, there is not yet any evidence to explain why they occur.\n<\/p>\n<p>The research team suggests it is possible that they are the result of a black hole and a star colliding. Much more work is required to find out if that is the case, or if the explosions are due to something else entirely.<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tM. Nicholl et al, AT 2022aedm and a New Class of Luminous, Fast-cooling Transients in Elliptical Galaxies, <i>The Astrophysical Journal Letters<\/i> (2023).  DOI: 10.3847\/2041-8213\/acf0ba<\/p>\n<\/p><\/div>\n<p class=\"article-main__note mt-4\">\n\t\t\t\t\t\t\t\t\t\t\t\t  \u00a9 2023 Science X Network\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<p>\t\t\t\t\t\t\t\t\t\t<!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>\n\t\t\t\t\t\t\t\t\t\t\t\t<strong>Citation<\/strong>:<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tNew class of super-bright exploding transient discovered (2023, September 7)<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 10 September 2023<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tfrom\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<p>\n\t\t\t\t\t\t\t\t\t\t\t This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n\t\t\t\t\t\t\t\t\t\t\t part may be reproduced without the written permission. The content is provided for information purposes only.\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<\/p><\/div>\n<\/p><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Follow-up of AT 2022aedm. Left: multicolor light curves from UV to NIR. Arrows indicate upper limits. The inset shows the early ATLAS flux data with a second-order fit (also shown on the multicolor plot) and time above half-maximum. Taking the shallowest and steepest rises allowed by the ATLAS data changes the time of zero flux &hellip;<\/p>\n","protected":false},"author":1,"featured_media":8421,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New class of super-bright exploding transient discovered - Innovation Discoveries<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/power2innovate.com\/new-class-of-super-bright-exploding-transient-discovered\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New class of super-bright exploding transient discovered - Innovation Discoveries\" \/>\n<meta property=\"og:description\" content=\"Follow-up of AT 2022aedm. Left: multicolor light curves from UV to NIR. Arrows indicate upper limits. The inset shows the early ATLAS flux data with a second-order fit (also shown on the multicolor plot) and time above half-maximum. 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