{"id":1750,"date":"2011-09-07T05:57:51","date_gmt":"2011-09-07T12:57:51","guid":{"rendered":"http:\/\/cosmologyscience.com\/cosblog\/?p=1750"},"modified":"2016-02-13T20:15:23","modified_gmt":"2016-02-14T04:15:23","slug":"dark-matter-conjecture-evaporated","status":"publish","type":"post","link":"https:\/\/cosmologyscience.com\/cosblog\/dark-matter-conjecture-evaporated\/","title":{"rendered":"Elusive Dark Matter Idea Evaporating"},"content":{"rendered":"
\"Dark

Dark Matter Illuminated?
Credit: SymmetryMagazine.org<\/p><\/div>\n

NewScientist reports that “NASA’s FERMI satellite has confirmed a previous hint that there is more antimatter than expected coming from space.<\/a> The bad news is that the result strongly almost certainly rules out Dark Matter <\/a>as the source.”
\n
\nIn 2008 an excess of antimatter positrons was detected by the Russian-European PAMELA satellite. The new FERMI observations doubled the energy of positrons (up to 200 GigaElectronVolts – GeV) that could be detected. Unfortunately for the Dark Matter conjecture, extra positrons were found at these higher masses\/energies.<\/strong><\/p>\n

Big Bang’s “missing mass” needs Dark Matter – which has never been detected – only theorized. To detect Dark Matter (which allegedly doesn’t interact with anything, except that it should invoke gravity to get galaxy rotation working and might have some weak force) anti-matter needs to disappear at a specific energy-mass level to indicate that Dark Matter exists at that energy-mass.<\/p>\n

The disappearance of anti-matter at a specific energy-mass would mean that Dark Matter is combining with anti-matter at that energy-mass and both evaporated \/ were converted to energy.<\/p>\n

An Italian experiment called DAMA<\/a> suggests that Dark Matter particles may exist at 100 GeV. However some researchers believe these newer results eclipse the DAMA results.<\/p>\n

While this does not necessarily mean that dark matter does not exist, it does mean anti-matter seen by the PAMELA experiment was not the elusive missing Dark Matter.<\/p>\n

Update Sept 2011: An experiment called CRESST II at Gran Sasso mountain in Italy found some 20 unusual particle interactions deep underground at 7-20 GeV and is suggesting they may be Dark Matter.<\/a><\/p><\/blockquote>\n

Unfortunately for all Dark Matter conjectures<\/a>, researchers Gallo and Feng showed in 2008<\/a> that galaxy rotation curves are just fine<\/a>; that they are perfectly understandable using Newtonian mechanics without resorting to speculative and exotic Dark Matter ideas.<\/p>\n

References:
\nMeasurement of separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope<\/a>, Fermi LAT Collaboration, 2011<\/p>\n

A Thin-Disk Gravitational Model for Galactic Rotation, C. F. Gallo and James Q. Feng.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

NewScientist reports that “NASA’s FERMI satellite has confirmed a previous hint that there is more antimatter than expected coming from space. The bad news is that the result strongly almost certainly rules out Dark Matter as the source.”<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":2,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[13,4,46,27,21,9,17,20,45],"tags":[234,59,63,233],"class_list":["post-1750","post","type-post","status-publish","format-standard","hentry","category-basic-science","category-big-bang","category-dark","category-dark-matter","category-experiments","category-models","category-news","category-particles","category-unobserved","tag-dama","tag-dark-matter","tag-galaxy-rotation","tag-gran-sasso"],"_links":{"self":[{"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/posts\/1750","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/comments?post=1750"}],"version-history":[{"count":0,"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/posts\/1750\/revisions"}],"wp:attachment":[{"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/media?parent=1750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/categories?post=1750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cosmologyscience.com\/cosblog\/wp-json\/wp\/v2\/tags?post=1750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}