Polarization whorls from M87* at the event horizon telescope
Polarization whorls from M87* at the event horizon telescope
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DOI：
10.1098/rspa.2019.0618
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发表时间：
2018-09
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影响因子：
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通讯作者：
A. Lupsasca;D. Kapec;Yichen Shi;D. Gates;A. Strominger
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文献类型：
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作者：
A. Lupsasca;D. Kapec;Yichen Shi;D. Gates;A. Strominger
事件视界望远镜（EHT）有望很快生成邻近星系M87中心超大质量黑洞的偏振图像。有迹象表明，这个黑洞正在快速旋转。广义相对论预测，这样一个高速旋转的黑洞在其事件视界附近具有一种涌现的共形对称性。在本文中，我们利用这种对称性，通过解析方法预测事件视界望远镜将观测到的黑洞视界附近的偏振辐射，并发现了一种与黑洞自旋方向一致的独特涡旋图案。
The event horizon telescope (EHT) is expected to soon produce polarimetric images of the supermassive black hole at the centre of the neighbouring galaxy M87. There are indications that this black hole is rapidly spinning. General relativity predicts that such a high-spin black hole has an emergent conformal symmetry near its event horizon. In this paper, we use this symmetry to analytically predict the polarized near-horizon emissions to be seen at the EHT and find a distinctive pattern of whorls aligned with the spin.