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主題計畫 > 格陵蘭望遠鏡與次毫米波特長基線干涉儀計畫

格陵蘭望遠鏡*與次毫米波特長基線干涉儀計畫

GLT/VLBI 網站 (英文)
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image
The first ever image of a black hole shadow in the human history. The image is a supermassive black hole at the center of an elliptical galaxy M87 at the center of the Virgo cluster (EHT Collaboration et al. 2019, ApJL, 875, L1).
The First Black Hole Shadow Image

天文學上最終極觀測標的之一為以相當於事件視界的角解析度來直接觀測到黑洞及其周遭。觀測，特別是對事件視界的成像極為重要，因為這對研究廣義相對論強場效應，黑洞邊緣吸積盤及外向流過程以及黑洞的自旋等都開啟了新的窗口。

本所同時擁有 SMA 與 ALMA 使用權， 這兩個陣列若聯合成為一個超長基線干涉儀系統，可望達到數微角秒的角解析力。目前已知有兩個超大質量黑洞，即位於銀河系中心的SgrA*和M87的核心，其尺寸大得足以使用次毫米波段VLBI進行解析。我們提議再增加一座望遠鏡，與SMA及ALMA組成金三角。結合這三座望遠鏡，將能作到對黑洞的成像。這是僅使用由SMA及ALMA組成之單一基線所不能作到的。

美國國家科學基金會（NSF）已於2011年同意將ALMA-北美團隊興建的12米Vertex原型機望遠鏡提供給本所帶領的研究團隊，我們的合作機構包括史密松天文台（SAO）、美國國家電波天文台（NRAO）和海斯塔克天文台（Haystack Observatory）。我們建議將這個望遠鏡架設於格陵蘭以實現submm-VLBI。 目前南極有南極望遠鏡（SPT），藉由結合SPT與SMA及ALMA，南天的部份已可以組成submm-VLBI。但對北天而言，要使第三座望遠鏡能與SMA 及ALMA連成submm-VLBI，其最佳放置地點會是位於北極圈內海拔3,200米高的格陵蘭Summit Station，因此我們將這座12米望遠鏡更名為格陵蘭望遠鏡。

* 與史密松天文台、美國國家電波天文台和海斯塔克天文台合作的計畫

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