視覺化：黑洞吸積盤
Visualization: A Black Hole Accretion Disk
發表日期：2024-05-08
環繞黑洞會是什麼樣子呢？如果黑洞周圍有一個由發光和吸積氣體組成的漩渦盤，那麼黑洞的巨大引力就會使漩渦盤發出的光發生偏轉，使其看起來非常不尋常。這段動畫影片提供了一個直觀的展示。影片開始時，觀察者從吸積盤平面的正上方看向黑洞。 圍繞著中心黑洞的是一個薄薄的圓形軌道盤影像，它標誌著光子球的位置--光子球內部就是黑洞的事件視界。 在左側，圓盤大主影像中的一些部分在向你移動時顯得更加明亮。隨著影片的繼續，你會在黑洞上空迴圈，很快就會從頂部往下看，然後穿過遠端的圓盤平面，再回到原來的視點。吸積盤做了一些有趣的影像反轉--但從未出現過平面。事件視界望遠鏡（Event Horizon Telescope）正在以前所未有的細節對黑洞進行成像，因此像這樣的視覺化在今天顯得尤為重要。 奇點印象：這是美國國家航空航天局的黑洞周！
原文：What would it look like to circle a black hole? If the black hole was surrounded by a swirling disk of glowing and accreting gas, then the great gravity of the black hole would deflect light emitted by the disk to make it look very unusual. The featured animated video gives a visualization. The video starts with you, the observer, looking toward the black hole from just above the plane of the accretion disk. Surrounding the central black hole is a thin circular image of the orbiting disk that marks the position of the photon sphere -- inside of which lies the black hole's event horizon. Toward the left, parts of the large main image of the disk appear brighter as they move toward you. As the video continues, you loop over the black hole, soon looking down from the top, then passing through the disk plane on the far side, then returning to your original vantage point. The accretion disk does some interesting image inversions -- but never appears flat. Visualizations such as this are particularly relevant today as black holes are being imaged in unprecedented detail by the Event Horizon Telescope. Singularity Impressive: It's Black Hole Week at NASA!
※ 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。