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user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:Skapa_konto&returnto=Kvarkstj%C3%A4rna" title="Du uppmuntras att skapa ett konto och logga in, men det är inte obligatoriskt" class=""><span>Skapa konto</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:Inloggning&returnto=Kvarkstj%C3%A4rna" title="Inloggning ger tillgång till fler funktioner för den som vill skriva och redigera artiklar. [o]" accesskey="o" class=""><span>Logga in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Fler alternativ" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personliga verktyg" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personliga verktyg</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Användarmeny" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_sv.wikipedia.org&uselang=sv"><span>Stöd Wikipedia</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:Skapa_konto&returnto=Kvarkstj%C3%A4rna" title="Du uppmuntras att skapa ett konto och logga in, men det är inte obligatoriskt"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Skapa konto</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:Inloggning&returnto=Kvarkstj%C3%A4rna" title="Inloggning ger tillgång till fler funktioner för den som vill skriva och redigera artiklar. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logga in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Sidor för utloggade redigerare <a href="/wiki/Hj%C3%A4lp:Introduktion" aria-label="Läs mer om redigering"><span>läs mer</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:Mina_bidrag" title="En lista över redigeringar från denna IP-adress [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:Min_diskussion" title="Diskussion om redigeringar från det här IP-numret [n]" accesskey="n"><span>Diskussion</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Webbplats"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Innehåll" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Innehåll</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytta till sidofältet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">dölj</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inledning</div> </a> </li> <li id="toc-Se_även" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Se_även"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Se även</span> </div> </a> <ul id="toc-Se_även-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referenser" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referenser"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Referenser</span> </div> </a> <ul id="toc-Referenser-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Externa_länkar" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Externa_länkar"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Externa länkar</span> </div> </a> <ul id="toc-Externa_länkar-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Innehåll" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Växla innehållsförteckningen" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Växla innehållsförteckningen</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Kvarkstjärna</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Gå till en artikel på ett annat språk. Tillgänglig på 36 språk" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-36" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">36 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Kwarkster" title="Kwarkster – afrikaans" lang="af" hreflang="af" data-title="Kwarkster" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%86%D8%AC%D9%85_%D9%83%D9%88%D8%A7%D8%B1%D9%83%D9%8A" title="نجم كواركي – arabiska" lang="ar" hreflang="ar" data-title="نجم كواركي" data-language-autonym="العربية" data-language-local-name="arabiska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Kvark_ulduzu" title="Kvark ulduzu – azerbajdzjanska" lang="az" hreflang="az" data-title="Kvark ulduzu" data-language-autonym="Azərbaycanca" data-language-local-name="azerbajdzjanska" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A7%8B%E0%A6%AF%E0%A6%BC%E0%A6%BE%E0%A6%B0%E0%A7%8D%E0%A6%95_%E0%A6%A4%E0%A6%BE%E0%A6%B0%E0%A6%BE" title="কোয়ার্ক তারা – bengali" lang="bn" hreflang="bn" data-title="কোয়ার্ক তারা" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Estel_de_quarks" title="Estel de quarks – katalanska" lang="ca" hreflang="ca" data-title="Estel de quarks" data-language-autonym="Català" data-language-local-name="katalanska" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9A%D0%B2%D0%B0%D1%80%D0%BA%D0%BB%D0%B0_%C3%A7%C4%83%D0%BB%D1%82%C4%83%D1%80" title="Кваркла çăлтăр – tjuvasjiska" lang="cv" hreflang="cv" data-title="Кваркла çăлтăр" data-language-autonym="Чӑвашла" data-language-local-name="tjuvasjiska" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Kvarkov%C3%A1_hv%C4%9Bzda" title="Kvarková hvězda – tjeckiska" lang="cs" hreflang="cs" data-title="Kvarková hvězda" data-language-autonym="Čeština" data-language-local-name="tjeckiska" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Kvarkstjerne" title="Kvarkstjerne – danska" lang="da" hreflang="da" data-title="Kvarkstjerne" data-language-autonym="Dansk" data-language-local-name="danska" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Quarkstern" title="Quarkstern – tyska" lang="de" hreflang="de" data-title="Quarkstern" data-language-autonym="Deutsch" data-language-local-name="tyska" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Kvarkt%C3%A4ht" title="Kvarktäht – estniska" lang="et" hreflang="et" data-title="Kvarktäht" data-language-autonym="Eesti" data-language-local-name="estniska" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Quark_star" title="Quark star – engelska" lang="en" hreflang="en" data-title="Quark star" data-language-autonym="English" data-language-local-name="engelska" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Estrella_de_quarks" title="Estrella de quarks – spanska" lang="es" hreflang="es" data-title="Estrella de quarks" data-language-autonym="Español" data-language-local-name="spanska" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Quark_izar" title="Quark izar – baskiska" lang="eu" hreflang="eu" data-title="Quark izar" data-language-autonym="Euskara" data-language-local-name="baskiska" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%AA%D8%A7%D8%B1%D9%87_%DA%A9%D9%88%D8%A7%D8%B1%DA%A9%DB%8C" title="ستاره کوارکی – persiska" lang="fa" hreflang="fa" data-title="ستاره کوارکی" data-language-autonym="فارسی" data-language-local-name="persiska" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%BF%BC%ED%81%AC%EB%B3%84" title="쿼크별 – koreanska" lang="ko" hreflang="ko" data-title="쿼크별" data-language-autonym="한국어" data-language-local-name="koreanska" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Bintang_kuark" title="Bintang kuark – indonesiska" lang="id" hreflang="id" data-title="Bintang kuark" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiska" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Stella_di_quark" title="Stella di quark – italienska" lang="it" hreflang="it" data-title="Stella di quark" data-language-autonym="Italiano" data-language-local-name="italienska" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Kvarkin%C4%97_%C5%BEvaig%C5%BEd%C4%97" title="Kvarkinė žvaigždė – litauiska" lang="lt" hreflang="lt" data-title="Kvarkinė žvaigždė" data-language-autonym="Lietuvių" data-language-local-name="litauiska" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kvarkcsillag" title="Kvarkcsillag – ungerska" lang="hu" hreflang="hu" data-title="Kvarkcsillag" data-language-autonym="Magyar" data-language-local-name="ungerska" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Quarkster" title="Quarkster – nederländska" lang="nl" hreflang="nl" data-title="Quarkster" data-language-autonym="Nederlands" data-language-local-name="nederländska" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AF%E3%82%A9%E3%83%BC%E3%82%AF%E6%98%9F" title="クォーク星 – japanska" lang="ja" hreflang="ja" data-title="クォーク星" data-language-autonym="日本語" data-language-local-name="japanska" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Kvarkstjerne" title="Kvarkstjerne – norskt bokmål" lang="nb" hreflang="nb" data-title="Kvarkstjerne" data-language-autonym="Norsk bokmål" data-language-local-name="norskt bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Kvarkstjerne" title="Kvarkstjerne – nynorska" lang="nn" hreflang="nn" data-title="Kvarkstjerne" data-language-autonym="Norsk nynorsk" data-language-local-name="nynorska" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Gwiazda_dziwna" title="Gwiazda dziwna – polska" lang="pl" hreflang="pl" data-title="Gwiazda dziwna" data-language-autonym="Polski" data-language-local-name="polska" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Estrela_de_quarks" title="Estrela de quarks – portugisiska" lang="pt" hreflang="pt" data-title="Estrela de quarks" data-language-autonym="Português" data-language-local-name="portugisiska" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Stea_quark" title="Stea quark – rumänska" lang="ro" hreflang="ro" data-title="Stea quark" data-language-autonym="Română" data-language-local-name="rumänska" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D0%B2%D0%B0%D1%80%D0%BA%D0%BE%D0%B2%D0%B0%D1%8F_%D0%B7%D0%B2%D0%B5%D0%B7%D0%B4%D0%B0" title="Кварковая звезда – ryska" lang="ru" hreflang="ru" data-title="Кварковая звезда" data-language-autonym="Русский" data-language-local-name="ryska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Quark-star" title="Quark-star – Simple English" lang="en-simple" hreflang="en-simple" data-title="Quark-star" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Kvarkov%C3%A1_hviezda" title="Kvarková hviezda – slovakiska" lang="sk" hreflang="sk" data-title="Kvarková hviezda" data-language-autonym="Slovenčina" data-language-local-name="slovakiska" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kvarkkit%C3%A4hti" title="Kvarkkitähti – finska" lang="fi" hreflang="fi" data-title="Kvarkkitähti" data-language-autonym="Suomi" data-language-local-name="finska" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9A%D0%B2%D0%B0%D1%80%D0%BA_%D0%B9%D0%BE%D0%BB%D0%B4%D1%8B%D0%B7%D1%8B" title="Кварк йолдызы – tatariska" lang="tt" hreflang="tt" data-title="Кварк йолдызы" data-language-autonym="Татарча / tatarça" data-language-local-name="tatariska" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%94%E0%B8%B2%E0%B8%A7%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A3%E0%B9%8C%E0%B8%81" title="ดาวควาร์ก – thailändska" lang="th" hreflang="th" data-title="ดาวควาร์ก" data-language-autonym="ไทย" data-language-local-name="thailändska" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kuark_y%C4%B1ld%C4%B1z%C4%B1" title="Kuark yıldızı – turkiska" lang="tr" hreflang="tr" data-title="Kuark yıldızı" data-language-autonym="Türkçe" data-language-local-name="turkiska" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D0%B2%D0%B0%D1%80%D0%BA%D0%BE%D0%B2%D0%B0_%D0%B7%D0%BE%D1%80%D1%8F" title="Кваркова зоря – ukrainska" lang="uk" hreflang="uk" data-title="Кваркова зоря" data-language-autonym="Українська" data-language-local-name="ukrainska" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Sao_quark" title="Sao quark – vietnamesiska" lang="vi" hreflang="vi" data-title="Sao quark" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamesiska" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%A4%B8%E5%85%8B%E6%98%9F" title="夸克星 – kinesiska" lang="zh" hreflang="zh" data-title="夸克星" data-language-autonym="中文" data-language-local-name="kinesiska" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q7029#sitelinks-wikipedia" title="Redigera interwikilänkar" class="wbc-editpage">Redigera länkar</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namnrymder"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Kvarkstj%C3%A4rna" title="Visa innehållssidan [c]" accesskey="c"><span>Artikel</span></a></li><li id="ca-talk" 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src="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/HST_SN_1987A_20th_anniversary.jpg/250px-HST_SN_1987A_20th_anniversary.jpg" decoding="async" width="250" height="195" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/HST_SN_1987A_20th_anniversary.jpg/375px-HST_SN_1987A_20th_anniversary.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/50/HST_SN_1987A_20th_anniversary.jpg/500px-HST_SN_1987A_20th_anniversary.jpg 2x" data-file-width="655" data-file-height="512" /></a><figcaption><a href="/wiki/SN_1987A" title="SN 1987A">SN 1987A</a> är en möjlig kvarkstjärna</figcaption></figure> <p>En <b>kvarkstjärna</b> är en teoretiskt föreslagen form av <a href="/wiki/Stj%C3%A4rna" title="Stjärna">stjärna</a> som, om den finns, helt består av <a href="/wiki/Kvark" title="Kvark">särkvarkar</a>. Den skulle alltså bestå av fundamentala <a href="/wiki/Partikel" class="mw-disambig" title="Partikel">partiklar</a> och därmed ha högre densitet än en <a href="/wiki/Neutronstj%C3%A4rna" title="Neutronstjärna">neutronstjärna</a>. Kvarkstjärnor och rena särkvarkstjärnor är fortfarande högst hypotetiska, men det finns ett par kandidater som observerades av <a href="/wiki/Astronom" title="Astronom">astronomer</a> med <a href="/wiki/Chandra-teleskopet" title="Chandra-teleskopet">Chandra-teleskopet</a> i april <a href="/wiki/2002" title="2002">2002</a>, betecknade <a href="/wiki/RX_J1856.5-3754" title="RX J1856.5-3754">RX J1856.5-3754</a> och <a href="/w/index.php?title=3C58&action=edit&redlink=1" class="new" title="3C58 [inte skriven än]">3C58</a>, vilka tidigare antagits vara neutronstjärnor. Om dessas nya natur bekräftas, skulle det vara exempel på ett för oss nytt tillstånd hos <a href="/wiki/Materia" title="Materia">materien</a>. </p><p>Den första RX J1856.5-3754, finns ett hundratal <a href="/wiki/Ljus%C3%A5r" title="Ljusår">ljusår</a> från <a href="/wiki/Jorden" title="Jorden">jorden</a>. Dess diameter uppmättes först till 6 km, vilket är för litet för att den skulle kunna vara en neutronstjärna med vedertagen densitet. Efter att avståndsmätningarna förbättrats, kom man dock fram till att avståndet var större än man trott, och diametern bedöms nu vara 15 km. Den andra 3C58, likaledes baserat på gällande fysikaliska lagar, befanns vara kallare än den borde vara. Det är därför fortfarande omdebatterat om de kan vara kvarkstjärnor eller inte. </p><p>Senare har en tredje stjärna, <a href="/wiki/XTE_J1739-285" title="XTE J1739-285">XTE J1739-285</a>,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-reference-link-bracket">[</span>1<span class="cite-reference-link-bracket">]</span></a></sup> observerats av ett forskarlag från <a href="/wiki/University_of_Iowa" title="University of Iowa">University of Iowa</a>, och likaså rapporterats som en möjlig kandidat. </p><p>Nya observationer av supernovor <a href="/wiki/SN_2006gy" title="SN 2006gy">SN 2006gy</a>, <a href="/wiki/SN_2005gj" title="SN 2005gj">SN 2005gj</a> och <a href="/wiki/SN_2005ap" title="SN 2005ap">SN 2005ap</a> pekar även de på den möjliga förekomsten av kvarkstjärnor,<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-reference-link-bracket">[</span>2<span class="cite-reference-link-bracket">]</span></a></sup> och därutöver har kinesiska forskare i <a href="/wiki/Hongkong" title="Hongkong">Hongkong</a> föreslagit att den kollapsade kärnan hos den kända <a href="/wiki/Supernova" title="Supernova">supernovan</a> <a href="/wiki/SN_1987A" title="SN 1987A">SN 1987A</a> skulle vara en kvarkstjärna.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-reference-link-bracket">[</span>3<span class="cite-reference-link-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-reference-link-bracket">[</span>4<span class="cite-reference-link-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Se_även"><span id="Se_.C3.A4ven"></span>Se även</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kvarkstj%C3%A4rna&veaction=edit&section=1" title="Redigera avsnitt: Se även" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | 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title="Redigera avsnitts källkod: Referenser"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <dl><dt>Fotnoter</dt></dl> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <span class="reference-text"><a rel="nofollow" class="external text" href="http://space.newscientist.com/article/dn11221?DCMP=NLC-nletter&nsref=dn11221"><i>Fastest spinning star may have exotic heart - space</i></a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080219190438/http://space.newscientist.com/article/dn11221?DCMP=NLC-nletter&nsref=dn11221">Arkiverad</a> 19 februari 2008 hämtat från the <a href="/wiki/Internet_Archive#Wayback_Machine" title="Internet Archive">Wayback Machine</a>. - New Scientist Space (20 February 2007)</span> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <span class="reference-text"><a rel="nofollow" class="external text" href="http://astronomynow.com/080604Secondsupernovaepointtoquarkstars.html">Astronomy Now Online - <i>Second Supernovae Point to Quark Stars</i></a>.</span> </li> <li id="cite_note-3"><a href="#cite_ref-3">^</a> <span class="reference-text"><a rel="nofollow" class="external text" href="http://arxiv.org/abs/0902.0653">Arvix - <i>Could the compact remnant of SN 1987A be a quark star?</i></a></span> </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.newscientist.com/article/mg20126964.700-quark-star-may-hold-secret-to-early-universe.html">New Scientist - <i>Quark star may hold secret to early universe</i></a></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Externa_länkar"><span id="Externa_l.C3.A4nkar"></span>Externa länkar</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kvarkstj%C3%A4rna&veaction=edit&section=3" title="Redigera avsnitt: Externa länkar" class="mw-editsection-visualeditor"><span>redigera</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kvarkstj%C3%A4rna&action=edit&section=3" title="Redigera avsnitts källkod: Externa länkar"><span>redigera wikitext</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://antwrp.gsfc.nasa.gov/apod/ap020414.html">NASA - APOD - RX J185635-375: Candidate Quark Star</a></li> <li><a rel="nofollow" class="external text" href="http://chandra.harvard.edu/resources/illustrations/neutronstars_4.html">Neutron Star/Quark Star Interior</a></li> <li><a rel="nofollow" class="external text" href="http://www.nature.com/nsu/020408/020408-8.html">Quark star glimmers</a></li> <li><a rel="nofollow" class="external text" href="http://www.cerncourier.com/main/article/42/5/10">CERN Courier - Debate sparked on quark stars</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20030815163516/http://www.popsci.com/popsci/aviation/article/0,12543,265576,00.html">Popular Science - Wish Upon a Quark Star</a></li> <li><a rel="nofollow" class="external text" href="http://arxiv.org/abs/astro-ph/0204159">Astrophysics - Is RX J185635-375 a Quark Star?</a></li> <li><a rel="nofollow" class="external text" href="http://curious.astro.cornell.edu/question.php?number=445">Cornell - Curious About Astronomy - What process would bring about a quark star?</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20020427044227/http://www.wired.com/news/technology/0,1282,51943-2,00.html">Wired News - Quarks or Quirky Neutron Stars?</a></li> <li><a rel="nofollow" class="external text" href="https://imagine.gsfc.nasa.gov/docs/ask_astro/answers/020412a.html">Imagine the Universe! - Ask A High Energy Astronomer - Strange Quark Stars</a></li></ul> <p><br /> </p> <style 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dekad">Kosmologisk dekad</a></div></td></tr><tr style="height:2px"><td></td></tr><tr><td class="navbox-group" style=";;">Partikelkluster i vakuum</td><td style="text-align:left;border-left:2px solid #fdfdfd;width:100%;padding:0px;;;" class="navbox-list navbox-"><div style="padding:0em 0.25em"><a href="/wiki/Gas" title="Gas">Gas</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Atmosf%C3%A4r" title="Atmosfär">Atmosfär</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Solvind" title="Solvind">Solvind</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Kosmiska_partiklar" title="Kosmiska partiklar">Kosmiska partiklar</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Kosmisk_bakgrundsstr%C3%A5lning" title="Kosmisk bakgrundsstrålning">Kosmisk bakgrundsstrålning</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Asteroidb%C3%A4ltet" title="Asteroidbältet">Asteroidbältet</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Stj%C3%A4rnhop" title="Stjärnhop">Stjärnhop</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Solsystem" title="Solsystem">Solsystem</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Galaxhop" title="Galaxhop">Galaxhop</a></div></td></tr><tr style="height:2px"><td></td></tr><tr><td class="navbox-group" style=";;">Galaxrelaterade artiklar</td><td style="text-align:left;border-left:2px solid #fdfdfd;width:100%;padding:0px;;;" class="navbox-list navbox-"><div style="padding:0em 0.25em"><a href="/wiki/Galax" title="Galax">Galax</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Laniakeasuperhopen" title="Laniakeasuperhopen">Laniakeasuperhopen</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Virgosuperhopen" title="Virgosuperhopen">Virgosuperhopen</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Kvasar" title="Kvasar">Kvasar</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Blazar" title="Blazar">Blazar</a><span 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style="font-weight:bold;"> · </span> <a href="/wiki/Protostj%C3%A4rna" title="Protostjärna">Protostjärna</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Brun_dv%C3%A4rg" title="Brun dvärg">Brun dvärg</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Vit_dv%C3%A4rg" title="Vit dvärg">Vit dvärg</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Stj%C3%A4rna" title="Stjärna">Stjärna</a><span style="font-weight:bold;"> · </span> <a href="/wiki/R%C3%B6d_j%C3%A4tte" title="Röd jätte">Röd jätte</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Dubbelstj%C3%A4rna" title="Dubbelstjärna">Dubbelstjärna</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Neutronstj%C3%A4rna" title="Neutronstjärna">Neutronstjärna</a> (<a href="/wiki/Pulsar" title="Pulsar">Pulsar</a>, <a href="/wiki/Magnetar" title="Magnetar">Magnetar</a>)<span style="font-weight:bold;"> · </span> <a class="mw-selflink selflink">Kvarkstjärna</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Svart_h%C3%A5l" title="Svart hål">Svart hål</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Ackretionsskiva" title="Ackretionsskiva">Ackretionsskiva</a></div></td></tr><tr style="height:2px"><td></td></tr><tr><td class="navbox-group" style=";;">Stjärnfenomen</td><td style="text-align:left;border-left:2px solid #fdfdfd;width:100%;padding:0px;;;" class="navbox-list navbox-"><div style="padding:0em 0.25em"><a href="/wiki/Olbers_paradox" title="Olbers paradox">Olbers paradox</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Chandrasekhargr%C3%A4nsen" title="Chandrasekhargränsen">Chandrasekhargränsen</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Sch%C3%B6nberg-Chandrasekhar-gr%C3%A4nsen" title="Schönberg-Chandrasekhar-gränsen">Schönberg-Chandrasekhar-gränsen</a><span style="font-weight:bold;"> · </span> <a href="/wiki/Eddington-luminositet" title="Eddington-luminositet">Eddington-luminositet</a><span style="font-weight:bold;"> · 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