來自 MeerKAT 的無線電銀河中心
The Galactic Center in Radio from MeerKAT

發表日期:2025-04-14
銀河系中心發生了什麼?光學望遠鏡很難說清楚,因為可見光被星際塵埃擋住了。不過,在其他波段的光線中,比如射電波段,可以看到銀河系中心的影像,它顯示出自己是一個相當有趣和活躍的地方。 這張特寫圖片展示的是由南非 64 個射電天線組成的 MeerKAT 陣列拍攝的銀河系中心影像。該影像的角度大小是月球的四倍( 2 度),其廣度、深度和細節都令人印象深刻。 許多已知的星源都以清晰的細節顯示出來,包括許多以 Sgr 為字首的星源,因為銀河系中心位於人馬座方向。 位於銀河系中心的 Sgr A 位於影像中心,這裡是銀河系中央超大質量黑洞的所在。 影像中的其他光源還不太清楚,包括位於 Sgr A 左側的弧線和許多絲狀線。插圖顯示的是最近用詹姆斯-韋伯太空望遠鏡拍攝的一小塊紅外影像,用於研究磁場對恆星形成的影響。 開放科學:瀏覽天體物理學原始碼庫中的 3 , 600 多個程式碼
原文:What's happening at the center of our galaxy? It's hard to tell with optical telescopes since visible light is blocked by intervening interstellar dust. In other bands of light, though, such as radio, the galactic center can be imaged and shows itself to be quite an interesting and active place. The featured picture shows an image of our Milky Way's center by the MeerKAT array of 64 radio dishes in South Africa. Spanning four times the angular size of the Moon (2 degrees), the image is impressively vast, deep, and detailed. Many known sources are shown in clear detail, including many with a prefix of Sgr, since the galactic center is in the direction of the constellation Sagittarius. In our galaxy's center lies Sgr A, found here in the image center, which houses the Milky Way's central supermassive black hole. Other sources in the image are not as well understood, including the Arc, just to the left of Sgr A, and numerous filamentary threads. The inset image shows a small patch recently imaged in infrared light with the James Webb Space Telescope to investigate the effects of magnetic fields on star formation. Open Science: Browse 3,600+ codes in the Astrophysics Source Code Library
※ 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。