{"id":68917,"date":"2016-12-17T11:01:58","date_gmt":"2016-12-17T10:01:58","guid":{"rendered":"http:\/\/www.astb.se\/cassiopeiabloggen\/?p=68917"},"modified":"2016-12-17T18:22:58","modified_gmt":"2016-12-17T17:22:58","slug":"nr-143-2016","status":"publish","type":"post","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2016\/12\/17\/nr-143-2016\/","title":{"rendered":"Nr 143 2016"},"content":{"rendered":"<h2>\n\t<strong>Tychos &quot;guldsot&quot; utmanar forskarv&auml;rlden<\/strong><br \/>\n<\/h2>\n<p>\n\tDe stora koncentrationerna av guld i Tycho Brahes skelett, h&aring;r- och sk&auml;ggstr&aring;n (scrolla ner till f&ouml;rra W-bloggen) &auml;r m&auml;rkliga och ov&auml;ntade och har uppm&auml;rksammats lite varstans. Varf&ouml;r upph&ouml;rde guldintaget en m&aring;nad innan Tychos d&ouml;d?\n<\/p>\n<p>\n\tSDU, det Syddanske Universitet, har <a href=\"http:\/\/www.sdu.dk\/en\/om_sdu\/fakulteterne\/naturvidenskab\/aktuelt\/2016_12_01_tychobrahe\">info p&aring; sin&nbsp; hemsida<\/a> d&auml;r &auml;ven denna Youtube-snutt finns med <strong>K L Rasmussen<\/strong>:\n<\/p>\n<h2>\n\t<iframe allowfullscreen=\"\" frameborder=\"0\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/17oKSXLyl70\" width=\"560\"><\/iframe><br \/>\n\t&nbsp;<br \/>\n<\/h2>\n<h2>\n\t<strong>CTA 102 &#8211; rekordinnehavare!<\/strong><br \/>\n<\/h2>\n<p>\n\tYrkesastronomernas summering av CTA 102 senaste tiden &#8211; s&aring; h&auml;r l&aring;ngt: &quot;likely the most luminous optical blazar state so far observed&quot;.\n<\/p>\n<p>\n\t<a href=\"http:\/\/www.astronomerstelegram.org\/?read=9868\">Rapporten h&auml;r.<\/a>\n<\/p>\n<h2>\n\t<strong>Ryska 6-metersteleskopet levererar<\/strong><br \/>\n<\/h2>\n<p>\n\tVad h&auml;nder med det ryska sexmetersteleskopet, det som p&aring; Sovjettiden var v&auml;rldens st&ouml;rsta teleskop (BTA, <span lang=\"ru\">Bolshoi Teleskop Alt-azimutalnyi<\/span>)?\n<\/p>\n<p>\n\tTeleskopet hade en olycklig f&ouml;rsta tid med diverse optiska och tekniska skavanker och var nog dessutom felplacerat i geografin fr&aring;n b&ouml;rjan, men det levererar resultat. H&auml;r &auml;r ett som s&auml;kert intresserar &quot;variabilisterna&quot; i v&aring;ra led:<a href=\"https:\/\/arxiv.org\/pdf\/1612.04946v1.pdf\"> En studie av variabeln V534 Lyr.<\/a>\n<\/p>\n<h2>\n\t<strong>Alfa Centauris &quot;Einsteinring&quot; f&aring;r bes&ouml;k 2028<\/strong><br \/>\n<\/h2>\n<p>\n\tI maj 2028 kommer f&ouml;ljande att intr&auml;ffa i Vintergatan: Paret som ing&aring;r i Alfa Centauri har en ovanligt snabb egenr&ouml;relse och ligger n&auml;ra det galaktiska planet. Stj&auml;rnt&auml;theten bakom &auml;r, som vi f&ouml;rst&aring;r, stor, och d&auml;rf&ouml;r har nu <a href=\"http:\/\/www.eso.org\/public\/images\/ann16075a\/\">astronomer med sina r&auml;knestickor kalkylerat<\/a> att i maj 2028 kommer <span class=\"simple-math\"><i>&alpha;<\/i><\/span>&thinsp;Cen A&nbsp; s&aring; h&auml;r n&auml;ra stj&auml;rnan kallad <span class=\"simple-math\"><i>m<\/i><sub><i>K<\/i><\/sub> = 7.8<\/span> star 2MASS 14392160-6049528:\n<\/p>\n<p>\n\t<span class=\"simple-math\"><i>&rho;<\/i><sub>min<\/sub> = 0.015 &plusmn; 0.135<\/span>&thinsp;arcsec\n<\/p>\n<p>\n\tDetta &auml;r den n&auml;rmaste stj&auml;rnkonjunktionen <span class=\"simple-math\"><i>&alpha;<\/i><\/span>&thinsp;Cen genomf&ouml;r p&aring; de tre n&auml;rmaste &aring;rtiondena, och bakomstj&auml;rnan kommer med 45 procents sannolikhet att passera genom Einsteinringen f&ouml;r <span class=\"simple-math\"><i>&alpha;<\/i><\/span>&thinsp;Cen A.\n<\/p>\n<p>\n\tKonjunktionen anses betyda en hel del f&ouml;r <a href=\"https:\/\/breakthroughinitiatives.org\/Initiative\/3\">projektet kallad Breakthrough Starshot<\/a> med uts&auml;ndande av nanofarkoster till Alfa Cen-systemet.\n<\/p>\n<p>\n\t<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/ann16075a-e1481913357938.jpg\"><img decoding=\"async\" alt=\"The predicted trajectory of Alpha Centauri A and B\" class=\"aligncenter size-full wp-image-68922\" height=\"412\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/ann16075a-e1481913357938.jpg\" width=\"600\" \/><\/a>\n<\/p>\n<p style=\"text-align: center;\">\n\t<em>Bildk&auml;lla:P. Kervella et al. (CNRS \/ U. de Chile \/ Observatoire de Paris \/ LESIA)\/ESO<\/em>\n<\/p>\n<div class=\"credit\">\n<h2>\n\t\t<strong>Stj&auml;rnljuset minskar<\/strong><br \/>\n\t<\/h2>\n<p>\n\t\tN&auml;r en stj&auml;rna ov&auml;ntar avtar i ljusstyrka &#8211; vad beror det p&aring;? <a href=\"https:\/\/arxiv.org\/abs\/1612.03907\">Fallet med RIK-210 diskuteras h&auml;r. <\/a>\n\t<\/p>\n<p>\n\t\tF&ouml;rklaringarna kan vara m&aring;nga.N&aring;got mystiskt &auml;r det.\n\t<\/p>\n<h2>\n\t\t<strong>Ingen vanlig kioskv&auml;ltare<\/strong><br \/>\n\t<\/h2>\n<p>\n\t\tP&aring; n&auml;tet hittade<strong> Lars Olefeldt<\/strong> &quot;Dagens nyhet&quot;:\n\t<\/p>\n<p>\n\t\t<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/MhhUq6eI0_Gx2LnPlqeEd746ecGi1suHwEFUQVzvj38-e1481995282809.png\"><img decoding=\"async\" alt=\"mhhuq6ei0_gx2lnplqeed746ecgi1suhwefuqvzvj38\" class=\"aligncenter size-full wp-image-68938\" height=\"365\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/MhhUq6eI0_Gx2LnPlqeEd746ecGi1suHwEFUQVzvj38-e1481995282809.png\" width=\"417\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/MhhUq6eI0_Gx2LnPlqeEd746ecGi1suHwEFUQVzvj38-e1481995282809.png 417w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/MhhUq6eI0_Gx2LnPlqeEd746ecGi1suHwEFUQVzvj38-e1481995282809-300x262.png 300w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2016\/12\/MhhUq6eI0_Gx2LnPlqeEd746ecGi1suHwEFUQVzvj38-e1481995282809-200x175.png 200w\" sizes=\"(max-width: 417px) 100vw, 417px\" \/><\/a>\n\t<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Tychos &quot;guldsot&quot; utmanar forskarv&auml;rlden De stora koncentrationerna av guld i Tycho Brahes skelett, h&aring;r- och sk&auml;ggstr&aring;n (scrolla ner till f&ouml;rra W-bloggen) &auml;r m&auml;rkliga och ov&auml;ntade och har uppm&auml;rksammats lite varstans. Varf&ouml;r upph&ouml;rde guldintaget en m&aring;nad innan Tychos d&ouml;d? SDU, det Syddanske Universitet, har info p&aring; sin&nbsp; hemsida d&auml;r &auml;ven denna Youtube-snutt finns med K L&hellip;&nbsp;<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/2016\/12\/17\/nr-143-2016\/\" rel=\"bookmark\">L\u00e4s mer &raquo;<span class=\"screen-reader-text\">Nr 143 2016<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","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":"","footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/68917"}],"collection":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/types\/post"}],"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=68917"}],"version-history":[{"count":26,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/68917\/revisions"}],"predecessor-version":[{"id":68946,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/68917\/revisions\/68946"}],"wp:attachment":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media?parent=68917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/categories?post=68917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/tags?post=68917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}