{"id":22526,"date":"2011-10-25T13:48:01","date_gmt":"2011-10-25T12:48:01","guid":{"rendered":"http:\/\/www.astb.se\/cassiopeiabloggen\/?p=22526"},"modified":"2011-10-25T22:06:50","modified_gmt":"2011-10-25T21:06:50","slug":"nr-271-2011","status":"publish","type":"post","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2011\/10\/25\/nr-271-2011\/","title":{"rendered":"Nr 271 2011"},"content":{"rendered":"<h2>2000-\u00e5rig aska efter supernova<\/h2>\n<p class=\"desc clear-left\">Ingen tvekan f\u00f6r mig &#8211; detta \u00e4r en av de intressantaste rapporterna p\u00e5 l\u00e4nge:<\/p>\n<p class=\"desc clear-left\"><a href=\"http:\/\/www.nasa.gov\/mission_pages\/spitzer\/news\/spitzer20111024.html\">NASA;s infrar\u00f6dk\u00e4nsliga instrument p\u00e5\u00a0 Spitzer- och WISE-sonderna\u00a0 ooh deras utforskning <\/a>av en supernovarest med tv\u00e5tusen \u00e5r p\u00e5 nacken. I sj\u00e4lva verket handlar det om den \u00e4ldsta k\u00e4nda supernovaobservationen i v\u00e5r historia. Kinesiska observat\u00f6rer s\u00e5g en g\u00e4ststj\u00e4rna 185\u00a0 e Kr, och i dess aska\u00a0 har vi nu f\u00e5tt nya sp\u00e4nnande inblickar.<strong><br \/>\n<\/strong><\/p>\n<p class=\"desc clear-left\"><strong>* Objektet kallas RCW 86 och vi anser oss<\/strong> nu veta att sm\u00e4llen \u00e4gde rum i en relativt materiefattig rymd, vilket gjorde att expansionen inte bromsades upp utan drog p\u00e5 fortare \u00e4n i &#8220;normalfall (om s\u00e5dana fall nu finns).<\/p>\n<p class=\"desc clear-left\"><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/598536main_pia14871-43_226-1701.jpg\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-22552\" title=\"Spitzer\/WISE-komposit. Foto:NASA\/JPL-Caltech\/UCLA \" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/598536main_pia14871-43_226-1701.jpg\" alt=\"\" width=\"226\" height=\"170\" \/><\/a><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/telescopeshe-2.jpg\"> <\/a><\/p>\n<p class=\"desc clear-left\"><strong>* Nebulositeten \u00e4r st\u00f6rre<\/strong> p\u00e5 himlavalvet \u00e4n till och med\u00a0 fullm\u00e5nen!\u00b0<\/p>\n<p class=\"desc clear-left\"><strong>* RCW 86 ligger <\/strong>8 000 ljus\u00e5r bort.<span style=\"display: none;\"> <\/span><\/p>\n<p class=\"desc clear-left\"><strong>* Supernovan som orsakade<\/strong> nebulositeten var av Typ Ia, en vit dv\u00e4rg-explosion. Astronomer trodde tidigare att det r\u00f6rde sig om en massiv stj\u00e4rna-kollaps, men den teorin h\u00e5ller inte l\u00e4ngre. Bl a ymnig f\u00f6rekomst av j\u00e4rn talar emot den tolkningen.<\/p>\n<p><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/598515main_pia14872-43_226-1702.jpg\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-22551\" title=\"Komposit fr\u00e5n fyra rymdteleskop! Foto:NASA\/ESA\/JPL-Caltech\/UCLA\/CXC\/SAO \" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/598515main_pia14872-43_226-1702.jpg\" alt=\"\" width=\"226\" height=\"170\" \/><\/a><\/p>\n<p class=\"desc clear-left\"><strong>* Denna vita dv\u00e4rg<\/strong> har med st\u00f6rsta sannolikhet innan explosionen bl\u00e5st bort stoft och gas i sin n\u00e4rhet och skapat en sorts ih\u00e5lighet i omr\u00e5det, vilket i dag f\u00f6rklarar supernovarestens \u00f6verraskade storlek.<\/p>\n<p class=\"desc clear-left\">Gamla kinesiska observationer av &#8220;g\u00e4ststj\u00e4rnor&#8221; (ke xing \u5ba2\u661f) intresserade i h\u00f6gsta grad v\u00e5r ASTB-grundare, lundaprofessorn <strong>Knut Lundmark<\/strong>. I ett ber\u00f6mt papper 1921 har han novan med, anser att den legat mellan Alfa och Beta i stj\u00e4rnbilden Kentauren och att den varit synlig i \u00e5ta m\u00e5nader. &#8220;- &#8211; &#8211; we have probably to deal with a genuine nova&#8221;, skriver Lundmark &#8211; och det har ju Historien givit honom r\u00e4tt i.<\/p>\n<h2>Trelleborgs ungdomar skickas till Kovalevsky-dagarna<\/h2>\n<p>Aprop\u00e5 f\u00f6rra W-bloggen ber\u00e4ttar<strong> Bertil Falk<\/strong> att\u00a0 Rotaryklubbarna i Trelleborg brukar skicka<br \/>\nmatematiskt beg\u00e5vade\u00a0 gymnasieungdomar till <strong>Sonja Kovalevsky<\/strong>-dagarna (Kovalevsky&#8230; Kovalevskaja&#8230; vad st\u00e5r p\u00e5 hennes grav p\u00e5 Norra begravningsplatsen i Solna?).<\/p>\n<p>Ett gott initiativ i \u00e4kta Rotary-anda.<\/p>\n<h2>Ett \u00e4kta kometlik!<\/h2>\n<p>P\u00e5 <a href=\"http:\/\/spaceweather.com\/\">sajten spaceweather,com<\/a> kallas italienaren<strong> Roberto Ligustris<\/strong> bild fr\u00e5n 22 oktober p\u00e5 de \u00f6mkliga resterna av <strong>Elenin<\/strong>-kometen f\u00f6r &#8220;comet corpse&#8221;. En tr\u00e4ffande beskrivning!<\/p>\n<p>Uppenbarligen r\u00f6r sig resterna efter kometens ursprungsbana, s\u00e5 det r\u00e5de ingen tvekan om identiteten.<\/p>\n<p><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/rolando-ligustri1_strip.jpg\"><img decoding=\"async\" width=\"512\" height=\"387\" class=\"aligncenter size-full wp-image-22530\" style=\"width: 476px; height: 360px;\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/rolando-ligustri1_strip.jpg\" alt=\"\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/rolando-ligustri1_strip.jpg 512w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/rolando-ligustri1_strip-300x226.jpg 300w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/a><\/p>\n<p>Rolando Ligustri f\u00f6rekommer ofta p\u00e5 diverse astronomidka\u00a0 bloggar ocg sajter, och <a href=\"http:\/\/www.global-rent-a-scope.com\/gras-drivers-focus\/2010\/10\/4\/rolando-ligustri-the-comet-man.html\">han \u00e4r en av pionj\u00e4rerna inom\u00a0 GRAS-projektet (Global Rent A Scope). P\u00e5 deras sid<\/a>a ber\u00e4ttar han om sin v\u00e4g till astronomins bildv\u00e4rld<\/p>\n<p>P\u00e5 allvar b\u00f6rjade Ligustri fota astronomiska objekt som kometer i slutet av 1990-talet, och sen har det bara blivit&#8230; v\u00e4rre och v\u00e4rre!<\/p>\n<p>En fantastisk bekantskap p\u00e5 n\u00e4tet som vi alla har gl\u00e4dje av.<\/p>\n<p><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/Rolando.jpg\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-22533\" title=\"Signore Ligustri!\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/Rolando.jpg\" alt=\"\" width=\"289\" height=\"435\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/Rolando.jpg 289w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/Rolando-199x300.jpg 199w\" sizes=\"(max-width: 289px) 100vw, 289px\" \/><\/a><\/p>\n<h2>TWAN-utst\u00e4llningen i Lund<\/h2>\n<p>Fram till slutet av m\u00e5naden tronar den vackra TWAN-utst\u00e4llningen p\u00e5 Astronomihuset i Lund. Dumt att missa en sk\u00f6nhetsupplevelse!<\/p>\n<p><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/TWAN_utstallning_Lund_300.jpg\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-22546\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/TWAN_utstallning_Lund_300.jpg\" alt=\"\" width=\"300\" height=\"179\" \/><\/a><\/p>\n<h2>Spiralarmar \u00e4ven i planetsystem!<\/h2>\n<p>\u00c4ntligen <a href=\"http:\/\/www.sciencedaily.com\/releases\/2011\/10\/111019170256.htm\">en rapport fr\u00e5n\u00a0 &#8220;min&#8221; stj\u00e4rnbild, Lupus (Vargen, Ulf):<\/a><\/p>\n<p>Spiralgalaxer k\u00e4nner vi ju till. men spiralarmar i p\u00e5g\u00e5ende planetbildningssystem? Tydligen har det f\u00f6rutsp\u00e5tts att fenomenet finns, och nu har det dessutom bildm\u00e4ssigt bevisats med hj\u00e4lp av Subaru-bj\u00e4ssen p\u00e5 Hawaii.<\/p>\n<p>Spiralskivan omger SAO 206462, som ligger 456 ljus\u00e5r bort i stj\u00e4rnbilden Lupus\/Vargen.<\/p>\n<p>Ber\u00e4knad \u00e5lder \u00e4r blygsamma 9 miljoner \u00e5r, och systemets storlek anges till dubbla avst\u00e5ndet solen-Pluto.<\/p>\n<p><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/111019170256-large.jpg\"><img decoding=\"async\" width=\"800\" height=\"620\" class=\"aligncenter size-full wp-image-22559\" style=\"width: 481px; height: 373px;\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/111019170256-large.jpg\" alt=\"\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/111019170256-large.jpg 800w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/111019170256-large-300x232.jpg 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>Ill: NAOJ\/Subaru<\/p>\n<h2>Tack f\u00f6r i dag &#8211; slut f\u00f6r idag!<\/h2>\n<p><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/to-be-continued.jpg\"><img decoding=\"async\" class=\"aligncenter size-medium wp-image-22566\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/to-be-continued-300x117.jpg\" alt=\"\" width=\"300\" height=\"117\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/to-be-continued-300x117.jpg 300w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2011\/10\/to-be-continued.jpg 500w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>2000-\u00e5rig aska efter supernova Ingen tvekan f\u00f6r mig &#8211; detta \u00e4r en av de intressantaste rapporterna p\u00e5 l\u00e4nge: NASA;s infrar\u00f6dk\u00e4nsliga instrument p\u00e5\u00a0 Spitzer- och WISE-sonderna\u00a0 ooh deras utforskning av en supernovarest med tv\u00e5tusen \u00e5r p\u00e5 nacken. I sj\u00e4lva verket handlar det om den \u00e4ldsta k\u00e4nda supernovaobservationen i v\u00e5r historia. Kinesiska observat\u00f6rer s\u00e5g en g\u00e4ststj\u00e4rna 185\u00a0&hellip;&nbsp;<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/2011\/10\/25\/nr-271-2011\/\" rel=\"bookmark\">L\u00e4s mer &raquo;<span class=\"screen-reader-text\">Nr 271 2011<\/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":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"2000-\u00e5rig aska efter supernova Ingen tvekan f\u00f6r mig - detta \u00e4r en av de intressantaste rapporterna p\u00e5 l\u00e4nge: NASA;s infrar\u00f6dk\u00e4nsliga instrument p\u00e5 Spitzer- och WISE-sonderna ooh deras utforskning av en supernovarest med tv\u00e5tusen \u00e5r p\u00e5 nacken. 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I sj\u00e4lva verket handlar det om den \u00e4ldsta k\u00e4nda supernovaobservationen i v\u00e5r historia. Kinesiska observat\u00f6rer s\u00e5g en g\u00e4ststj\u00e4rna 185\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.astb.se\/cassiopeiabloggen\/2011\/10\/25\/nr-271-2011\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2011-10-25T12:48:01+02:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2011-10-25T21:06:50+02:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Nr 271 2011 - Cassiopeiabloggen\" \/>\n\t\t<meta name=\"twitter:description\" content=\"2000-\u00e5rig aska efter supernova Ingen tvekan f\u00f6r mig - detta \u00e4r en av de intressantaste rapporterna p\u00e5 l\u00e4nge: NASA;s infrar\u00f6dk\u00e4nsliga instrument p\u00e5 Spitzer- och WISE-sonderna ooh deras utforskning av en supernovarest med tv\u00e5tusen \u00e5r p\u00e5 nacken. I sj\u00e4lva verket handlar det om den \u00e4ldsta k\u00e4nda supernovaobservationen i v\u00e5r historia. 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