{"id":206,"date":"2008-01-07T06:16:17","date_gmt":"2008-01-07T11:16:17","guid":{"rendered":"http:\/\/arxivblog.com\/?p=206"},"modified":"2008-01-07T06:25:42","modified_gmt":"2008-01-07T11:25:42","slug":"how-to-spot-a-wormhole","status":"publish","type":"post","link":"http:\/\/arxivblog.com\/?p=206","title":{"rendered":"How to spot a wormhole"},"content":{"rendered":"<p> <a href=\"http:\/\/arxivblog.com\/wp-content\/uploads\/2008\/01\/wormhole.jpg\" title=\"Wormhole\"><img decoding=\"async\" src=\"http:\/\/arxivblog.com\/wp-content\/uploads\/2008\/01\/wormhole.thumbnail.jpg\" alt=\"Wormhole\" \/><\/a><\/p>\n<p>I know ya&#8217;ll heard of wormholes, tunnels in the fabric of the cosmos that connect one region of the universe to another. These ain&#8217;t just the fanciful dreams of impressionable young astrobods: wormholes represent real solutions of Einstein&#8217;s equation of general relativity. If general relativity is correct, wormholes ought to be out there somewhere.<\/p>\n<p>But how to spot &#8217;em? It&#8217;s easy to imagine that a wormhole, being a kinda hole in spacetime, would be indistinguishable from a black hole.  Turns out that ain&#8217;t the case. Alexander Shatskiy, an astrothinker from the Lebedev Physical Institute in Moscow, says wormholes are fundamentally different from black holes because they have no event horizon. He&#8217;s even worked out what a wormhole should look like.<\/p>\n<p>The key difference is that light entering one end of a wormhole comes out at the other but in a highly characteristic way. The angular intensity distribution of this light has a minimum at the center, regardless of wavelength. This allows background stars to shine through giving the wormhole the appearance of a semi-transparent hollow sphere (see image above).<\/p>\n<p>Where to look? Shatskiy suggests that the next generation of supersensitive radio telelscope interferometers should have the resolution capable of distinguishing black holes from wormholes in active galactic nuclei.<\/p>\n<p>So the message to all you radio astronomers out there is: keep &#8217;em peeled.<\/p>\n<p>Ref: <a href=\"http:\/\/arxiv.org\/abs\/0712.2572\">arxiv.org\/abs\/0712.2572<\/a>: Passage of Photons Through Wormholes and the Influence of Rotation on the Amount of Phantom Matter around Them<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I know ya&#8217;ll heard of wormholes, tunnels in the fabric of the cosmos that connect one region of the universe to another. These ain&#8217;t just the fanciful dreams of impressionable young astrobods: wormholes represent real solutions of Einstein&#8217;s equation of general relativity. If general relativity is correct, wormholes ought to be out there somewhere. But [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,16],"tags":[],"class_list":["post-206","post","type-post","status-publish","format-standard","hentry","category-changin-the-world","category-seein-the-light"],"_links":{"self":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts\/206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=206"}],"version-history":[{"count":0,"href":"http:\/\/arxivblog.com\/index.php?rest_route=\/wp\/v2\/posts\/206\/revisions"}],"wp:attachment":[{"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=206"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/arxivblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}