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User:WiiUf/最大質量黑洞列表

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事件视界望远镜拍摄的图像显示了位于室女A星系核心的超大质量黑洞,该黑洞就位于此列表中。

这是迄今为止发现的最大质量黑洞列表,以太阳质量M)為单位(1太阳质量约为2×1030公斤)。

引言

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星系OJ 287中的两个黑洞与太阳系的比较

超大质量黑洞(SMBH)是一种极大的黑洞,其质量约为数十万到数百亿个太阳质量,理论上存在于几乎所有大质量星系的中心,在某些星系中甚至存在超大质量黑洞的双星系统(参见OJ 287系统)。然而,只有少数星系存在超大质量黑洞的明确动力学证据; [1]这些星系包括银河系本星系群中的仙女座星系M32 ,以及本星系群以外的一些星系,例如NGC 4395 。在这些星系中,恒星或气体的均方速度(或均方根速度)在中心附近上升约1/r,表明存在中心点质量。在所有其他星系中,迄今为止观测到的均方根速度向中心方向持平甚至下降,因此无法确定超大质量黑洞是否存在于这些星系中。 [1]尽管如此,由于M-Sigma关系英语M-sigma relation(在约10个已确认探测到的星系中,黑洞质量与这些星系核球中恒星的速度離散之间低散射的关系),人们普遍认为几乎每个星系的中心都包含一个超大质量黑洞。 [2] [3]尽管这种相关性仅基于少数几个星系,但对许多天文学家来说,它表明黑洞的形成与星系本身之间存在着紧密的联系。 [2]

尽管目前理论上超大质量黑洞存在于几乎所有大质量星系中,但更大质量的黑洞却很少见;迄今为止只发现不到几十个。确定特定超大质量黑洞的质量极其困难,因此它们仍处于开放研究领域。具有精确质量的超大质量黑洞仅限于拉尼亚凯亚超星系团内的星系和活动星系核

此列表的另一个问题是用于确定质量的方法。宽发射线混响映射(BLRM)、多普勒测量速度弥散以及M-sigma关系等方法尚未得到很好的建立。大多数时候,通过不同的方法得出的质量彼此相矛盾。

该列表包含質量已知的超大质量黑洞,至少精確到数量级。此列表中的一些物体被引用兩次,例如3C 273 ;一次来自 Bradley M. Peterson等人使 BLRM方法[4] ,另一次来自 Charles Nelson 使用[O III ]λ5007值和速度弥散[5] 。这个列表並不完整,因为仅斯隆数字巡天就探测到了约200000类星体,这些类星体很可能是質量達數數十亿倍太阳质量黑洞的所在地。此外,还有数百条有关黑洞测量的引文尚未列入此列表。尽管如此,大多数已知質量大於10亿太陽質量的黑洞都已显示出来。包含已知黑洞的梅西耶星系均包含在内。

新的发现表明,许多被称为“巨大”的黑洞可能超过1億或10億 M[6]

列表

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由于涉及的数字非常大,列出的黑洞的质量值采用科学计数法(数字乘以10的)。不确定的数值尽可能写在括号中。请注意,此列表中的不同条目在获取其质量值时采用不同的方法和系统,因此对其质量的置信度也不同。这些方法在列表的注释中有说明。

參見

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Notes

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References

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