中国中科院高能物理研究所等团队,近日通过分析中国首颗X射线空间天文卫星“慧眼”的观测数据,发现黑洞一个现象与理论相违:黑洞吞噬恒星时,当伴星物质愈靠近黑洞,物质外流逃逸的速度反而更快。
上述研究结果周一(15日)已在国际科学期刊发表。
理论上,当物质形成的吸积盘愈靠近黑洞时,由于遭引力弯曲,吸积盘内侧附近的热电子区域(冕),将向吸积盘散射出更多、更强的X射线辐射。
但研究文章指出,通过观测距地球大约11,300光年处的黑洞X射线双星MAXI J1820+070爆发,却发现当冕收缩接近黑洞时,对吸积盘的辐射反射强度反而减少。
论文作者解释,对于冕在黑洞附近的运动方式,以往的研究比较侧重于理论,观测证据相对较少。是次发现有助了解黑洞吸积过程,以及其在相对论效应下,发出等离子喷流现实情况。
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