模擬宇宙中的暗物質
Dark Matter in a Simulated Universe
來源:Tom Abel &
Ralf Kaehler
(KIPAC,
SLAC),
AMNH|發表日期:2024-10-20
我們的宇宙鬧鬼了嗎? 從這張暗物質地圖上看可能是這樣。 看不見的暗物質的引力是解釋星系為何旋轉得如此之快、星系為何繞星系團執行得如此之快、引力透鏡為何如此強烈地偏轉光線以及可見物質為何在本地宇宙和宇宙微波背景中如此分佈的主要原因。 美國自然歷史博物館海登天文館太空秀《黑暗宇宙》中的這幅特寫圖片重點展示了暗物質如何無處不在地困擾著我們的宇宙。 在這幅來自詳細電腦模擬的畫面中,複雜的暗物質細絲(黑色)像蜘蛛網一樣散佈在宇宙中,而相對罕見的重子物質團塊則被染成了橙色。這些模擬在統計上與天文觀測結果十分吻合。 也許更可怕的是,暗物質--雖然非常奇怪,而且形式未知--不再被認為是宇宙中最奇怪的引力源。這一榮譽現在屬於暗能量,它是一種更均勻的排斥引力源,現在似乎主導著整個宇宙的膨脹。 探索你的宇宙隨機 APOD 生成器
原文:Is our universe haunted? It might look that way on this dark matter map. The gravity of unseen dark matter is the leading explanation for why galaxies rotate so fast, why galaxies orbit clusters so fast, why gravitational lenses so strongly deflect light, and why visible matter is distributed as it is both in the local universe and on the cosmic microwave background. The featured image from the American Museum of Natural History's Hayden Planetarium Space Show Dark Universe highlights one example of how pervasive dark matter might haunt our universe. In this frame from a detailed computer simulation, complex filaments of dark matter, shown in black, are strewn about the universe like spider webs, while the relatively rare clumps of familiar baryonic matter are colored orange. These simulations are good statistical matches to astronomical observations. In what is perhaps a scarier turn of events, dark matter -- although quite strange and in an unknown form -- is no longer thought to be the strangest source of gravity in the universe. That honor now falls to dark energy, a more uniform source of repulsive gravity that seems to now dominate the expansion of the entire universe. Explore Your Universe: Random APOD Generator
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。