The Columbia astronomers’ model predicts that the variation would be two or three timesgreater in ultraviolet light than in visible light. And that is exactly what they found when theycompared archival data from the Hubble Space Telescope and NASA’s Galex space telescope tothe visible-light data previously analyzed by Dr. Graham’s group.
哥伦比亚大学的这三名天文学家建立的模型预测,其中紫外线的变化会比可见光显著。他们拿出哈勃太空望远镜和美国航空航天局的星系演化探测器(Galex)的历史数据,与格雷厄姆团队之前分析的可见光数据进行比对,发现结果正好与预测吻合。
“What’s big is that the Doppler boost is inevitable, Dr. Haiman said in an email. Givenreasonable assumptions about the masses of the two black holes, their model predicts theright ultraviolet data. “This is rare in ‘messy’ astronomy, he said, “to have an indisputableclean effect, which explains the data. Follow-up observations of ultraviolet and visible lightemissions in the coming years could help the clinch the case, the authors said. Their paper waspublished on Wednesday in the journal Nature.
“其中的重大意义在于,这只能是多普勒效应,海曼博士通过电子邮件接受采访时表示。只要给出有关这两个黑洞质量的合理假设,他们的模型就能预测出准确的紫外线数据。“在‘混乱’的天文学研究中,很难看到有一个毫无争议的清晰理论能够对数据做出解释,他说。三名研究人员表示,未来几年对紫外线和可见光辐射的追踪观察或将有利于得出确凿的结论。他们的论文于本周三发表在《自然》杂志(Nature)上。
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