{"id":497,"date":"2011-10-11T01:08:37","date_gmt":"2011-10-11T01:08:37","guid":{"rendered":"http:\/\/www.dgen.net\/blog\/?p=497"},"modified":"2018-01-31T19:57:27","modified_gmt":"2018-01-31T19:57:27","slug":"listen-to-the-colliding-antennae-galaxies","status":"publish","type":"post","link":"https:\/\/dgen.net\/0\/2011\/10\/11\/listen-to-the-colliding-antennae-galaxies\/","title":{"rendered":"Listen to the colliding &#8220;Antennae Galaxies&#8221;"},"content":{"rendered":"<p>A sneak preview of some of the work I&#8217;ll be <a href=\"\/blog\/?p=481\">presenting<\/a> on Sunday.<\/p>\n<p>Below is a radio-image taken by <a href=\"http:\/\/www.almaobservatory.org\/en\/home\">ALMA<\/a> of the &#8220;Antennae Galaxies&#8221; colliding. We have transformed the image-cube data, in which each pixel represents an <a href=\"http:\/\/en.wikipedia.org\/wiki\/Electromagnetic_spectrum\">electromagnetic radio spectrum<\/a>, into a sonic spectrum. By clicking the image and moving your cursor around you can &#8220;play&#8221; a spectrum of the colliding galaxies.<\/p>\n<p>Spend some time moving slowly around the red(redshifted) areas &#8211; there is a surprising richness to the harmonics for such a simple <a href=\"http:\/\/en.wikipedia.org\/wiki\/Sonification\">sonification<\/a>.<\/p>\n<p>Note: this loads a 62MB data-cube before displaying (still working on a compressed version) &#8230; it could take many minutes to appear if you are on a slow connection &#8211; it did take these photons 70 million years to reach us, so please be patient while they go the last few bit-miles!<\/p>\n<p>To view &amp; listen, I recommend you <a href=\"https:\/\/dgen.net\/music\/ALMACube\/\">open this link in a new tab<\/a> while you are reading this post.<\/p>\n<p>To get a sense of the picture at optical wavelengths, the <a href=\"http:\/\/hubblesite.org\/newscenter\/archive\/releases\/2006\/46\/image\/a\/\">HST<\/a> image [more at <a href=\"http:\/\/news.nationalgeographic.com\/news\/2011\/10\/111003-alma-radio-telescope-antennae-galaxies-picture-chile-space-science\/\">National Geographic<\/a> or <a href=\"http:\/\/www.wired.com\/wiredscience\/2011\/10\/alma-telescope-galaxies\/\">WIRED<\/a>] is on the left panel.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A sneak preview of some of the work I&#8217;ll be presenting on Sunday. Below is a radio-image taken by ALMA of the &#8220;Antennae Galaxies&#8221; colliding. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":506,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7,4,10,12,8],"tags":[],"class_list":["post-497","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arts","category-astronomy","category-music","category-presentations","category-science"],"jetpack_featured_media_url":"https:\/\/dgen.net\/0\/wp-content\/uploads\/2011\/10\/article-2044840-0E359E5700000578-113_964x864.jpg","jetpack_shortlink":"https:\/\/wp.me\/pfJFK3-81","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/posts\/497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/comments?post=497"}],"version-history":[{"count":37,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/posts\/497\/revisions"}],"predecessor-version":[{"id":1773,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/posts\/497\/revisions\/1773"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/media\/506"}],"wp:attachment":[{"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/media?parent=497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/categories?post=497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgen.net\/0\/wp-json\/wp\/v2\/tags?post=497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}