X-ray emissions observed over 5 days allowed the researchers to see through to the center of five of the blobs. The spectral signature of each one revealed a supermassive black hole.
射线的释放,使他们看明白了其中五个气泡的中心——每个气泡中心的光谱信号都显示出一个超大质量的黑洞。
Farihi and his team looked at 146 white dwarfs detected by the Sloan Digital Sky Survey that show the spectral signature of calcium pollution.
Farihi及其团队观察了斯隆数字巡天项目探测到的带有特定钙污染光谱标志的146颗白矮星。
So we know the spectral signature they would see, and the changes, 「 said Haqq-Misra, whose primary research involves studying the atmospheric changes caused by life.」