{"id":28694,"date":"2012-03-17T14:27:44","date_gmt":"2012-03-17T13:27:44","guid":{"rendered":"http:\/\/www.astb.se\/cassiopeiabloggen\/?p=28694"},"modified":"2012-03-18T12:33:52","modified_gmt":"2012-03-18T11:33:52","slug":"nr-58-2012","status":"publish","type":"post","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2012\/03\/17\/nr-58-2012\/","title":{"rendered":"Nr 58 2012"},"content":{"rendered":"

V\u00e4ntad dementi:
\n<\/span><\/h3>\n

Neutrinerna utmanar INTE Einstein l\u00e4ngre!<\/h2>\n

Nu har CERN-forskarna och teknikerna definitivt best\u00e4mt sig:<\/p>\n

\"\"<\/a>Nya kontrolltester, det s\u00e5 kallade ICARUS-experimentet (ICARUS =\u00a0 Imaging Cosmic and Rare Underground Signals), visar att neutriner INTE f\u00e4rdas fortare \u00e4n ljuset. De f\u00e4rdas precis s\u00e5 fort som de ska, nuddar ljushastigheten “underifr\u00e5n”, och Albert Einstein<\/strong> beh\u00f6ver inte rotera l\u00e4ngre i sin grav.<\/p>\n

CERN:s pressmess ig\u00e5r<\/a> ber\u00e4ttar att de tidigare s\u00e5 kallade OPERA-resultaten byggde p\u00e5 inbyggda fel (vilket m\u00e5nga av forskarna sj\u00e4lva trodde, alla st\u00e4llde ju dessutom inte upp som den kontroversiella rapportens delf\u00f6rfattare). Fysikl\u00e4rob\u00f6ckerna beh\u00f6ver inte skrivas om p\u00e5 denna punkt, men vi har f\u00e5tt ett pedagogiskt exempel p\u00e5 hur elitforskning g\u00e5r till – och m\u00e5ste g\u00e5 till.<\/p>\n

ICARUS-m\u00e4tningen baseras p\u00e5 sju neutriners f\u00e4rd mellan CERN och systerlabbet i Itaiien.<\/p>\n

Nobelpristagaren, den f\u00e4rgstarke forskaren Carlo Rubbia<\/strong>, har lett det kontrollerande ICARUS-experimentet, och p\u00e5 CERNS pressmess s\u00e4ger han s\u00e5 h\u00e4r (det \u00e4r mycket p\u00e5 engelska i dagens blogg – sorry for that):<\/p>\n

“The ICARUS experiment has provided an important cross check of the anomalous result reports from OPERA last year. I<\/em>CARUS measures the neutrino’s velocity to be no faster than the speed of light. These are difficult and sensitive measurements to make and they underline the importance of the scientific process. <\/em><\/p>\n

The ICARUS Liquid Argon Time Projection Chamber\u00a0is a novel detector which allows an accurate reconstruction of the neutrino interactions comparable with the old bubble chambers with fully electronics acquisition systems. The fast associated scintillation pulse provides the\u00a0precise \u00a0timing of each event, and has been exploited for the neutrino time-of-flight measurement. This technique is now recognized world wide as the most appropriate for future large volume neutrino detectors\u201d.<\/em><\/p>\n

Kina och Azerbadjan<\/h2>\n

\"\"<\/a>Om v\u00e4rldens astronomer kan kongressa i den r\u00e5kapitalistiska kommunistdiktaturen Kina, som avr\u00e4ttar flest m\u00e4nniskor i v\u00e4rlden per \u00e5r, kan finalen i Melodifestivalen mycket v\u00e4l f\u00f6rl\u00e4ggas till Azerbadjan.<\/p>\n

Men precis som vi f\u00f6rv\u00e4ntar oss att de svenska astronomerna kommer att uttala sig kritiskt om regimen i Beijing, \u00e4r det bra om den fantastiska artisten\u00a0 Loreen<\/strong> s\u00e4ger sanningen om \u00f6vergreppen mot yttrandefriheten i Azerbadjan.<\/p>\n

Gravitationslinser och quasarer<\/h2>\n

Det \u00e4r naturligtvis som att leta efter en n\u00e5l i en h\u00f6stack. men det g\u00e5r. B\u00f6rja med att ta fram 23 000 quasarers spektrum\u00a0 fr\u00e5n SDSS (Sloan Digital Sky Survey). <\/a>N\u00e4r du identifierat misst\u00e4nkta gravitationslins-kandidater, riktar du in Hubble-teleskopet, HST, och som astronomen som lett projektet, Frederic Courbin<\/strong> vid Ecole Polytechnique Federale de Lausanne, f\u00f6rmodligen utbrast:
\n– VOILA!<\/strong><\/span><\/p>\n

Med hj\u00e4lp av “linssoppan” kan astronomerna best\u00e4mma massan f\u00f6r\u00a0 quasarernas v\u00e4rdgalaxer, eftersom tumregeln \u00e4r denna: Ju v\u00e4rre exempel p\u00e5 gravitationslinser, desto st\u00f6rre massa.<\/p>\n

Vi befinner oss bara i b\u00f6rjan av denna speciella forskningsgren. 100 000-tals quasarer och linskandidater v\u00e4ntar p\u00e5 att uppt\u00e4ckas, katalogiseras och statistiskt behandlas.<\/p>\n

\"\"<\/a><\/p>\n

Om jag f\u00f6rst\u00e5tt saken r\u00e4tt hittade man de f\u00f6rsta gravitationslinserna med hj\u00e4lp av just quasarer, inte galaxer eller galaxhopar.<\/p>\n

Yrkesskadad?<\/h2>\n

Jag k\u00e4nner en stj\u00e4rnintresserad banktj\u00e4nstekvinna\u00a0 som beskriver svarta h\u00e5l som “kosmiska r\u00e4ntegap”.<\/p>\n

Obama visar v\u00e4gen<\/h2>\n

Den ende av de republikanska presidentkandidaterna i USA, som verkar ha ett genomt\u00e4nkt rymdfartsprogram p\u00e5 sin agenda\u00a0 \u00e4r Newt Gingrich<\/strong>.<\/p>\n

Barak Obamas<\/strong> administration har ju tvingats bruka k\u00f6ttyxan i diverse forskningsprogram inklusive NASA:s, en \u00e5tstramning som republikanerna har ett stort ansvar f\u00f6r i kongressen.\u00a0 Andra rymdl\u00e4nder, som Kina och Indien t ex, siktar d\u00e4remot st\u00e4ndigt fram\u00e5t och upp\u00e5t.<\/p>\n

Den sittande US-presidenten \u00e4r v\u00e4l \u00e4nd\u00e5 n\u00e5n sorts garant f\u00f6r en vettig forsknings- och utvecklingspolitik.\"\"<\/a> Jag gillar ju hans sl\u00e4ngar h\u00e4rom dan mot sina motst\u00e5ndare n\u00e4r det g\u00e4ller energi- och forskningspolitiken (tack till Lars Olefeldt<\/strong>, som f\u00e5ngat upp dem):<\/p>\n

“…If some of these folks were around when Columbus set sail, they probably would have been founding members of the Flat Earth Society. Maybe they would have agreed with one of the pioneers of the radio who apparently said, \u201cTelevision won\u2019t last. It\u2019s a flash in the pan.\u201d Or one of Henry Ford\u2019s advisors who was quoted saying, \u201cThe horse is here to stay but the automobile is only\u2026a fad.\u201d I can\u2019t prove this, but I do not think that man got the promotion he was looking for. They might have even sided with one of my predecessors, President Rutherford B. Hayes, who reportedly said this about the telephone: \u201cIt\u2019s a great invention but who would ever want to use one?\u201d I hear that quote kept him off Mt. Rushmore.
\n<\/strong><\/span><\/p>\n

…because we are inventors and builders and makers of things. We\u2019re Thomas Edison and the Wright Brothers and Bill Gates and Steve Jobs. That\u2019s who we are. That\u2019s who we need to be right now.”<\/strong><\/span><\/p>\n

Avslutningsvis<\/h2>\n

N\u00e5gra ord f\u00f6rmedlade fr\u00e5n en av v\u00e5ra sponsorer i Stora Hult, Vejbystrand, varifr\u00e5n Venus och Jupiter sett ovanligt friska och fina ut nu \u00f6ver \u00d6resund och Sk\u00e4lderviken:<\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

V\u00e4ntad dementi: Neutrinerna utmanar INTE Einstein l\u00e4ngre! Nu har CERN-forskarna och teknikerna definitivt best\u00e4mt sig: Nya kontrolltester, det s\u00e5 kallade ICARUS-experimentet (ICARUS =\u00a0 Imaging Cosmic and Rare Underground Signals), visar att neutriner INTE f\u00e4rdas fortare \u00e4n ljuset. De f\u00e4rdas precis s\u00e5 fort som de ska, nuddar ljushastigheten “underifr\u00e5n”, och Albert Einstein beh\u00f6ver inte rotera l\u00e4ngre… L\u00e4s mer »Nr 58 2012<\/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\/28694"}],"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=28694"}],"version-history":[{"count":44,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/28694\/revisions"}],"predecessor-version":[{"id":28744,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/28694\/revisions\/28744"}],"wp:attachment":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media?parent=28694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/categories?post=28694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/tags?post=28694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}