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在早期宇宙中,一个带有引力透镜的水质质光子

C M Violette Impellizzeri¹, John P McKean, Paola Castangia

¹Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany. violette@mpifr-bonn.mpg.de

|December 19, 2008

概括

天文学家使用引力透镜在遥远的类星体中发现了一种罕见的水质质光子. 这一发现表明,水晶体的特性,如亮度和密度,在早期星系中比以前认为的更高.

科学领域:

天文学天文学
天体物理学天体物理学
宇宙学的宇宙学是什么?

背景情况:

水质群通常在活跃星系中超大质量黑洞附近的密集分子云中发现.
当地水质质星的亮度函数预测高红移 (z > 2) 的质星极为罕见.
在z>2处的星系可能与局部星系有很大差异,原因是聚合和相互作用事件的增加.

研究的目的:

为了研究水晶体在比通常可观测的红移更高的红移时的流行和性质.
为了利用引力透镜作为一种工具来检测微弱的,遥远的物体.

主要方法:

通过使用引力透镜在高红移星系中搜索水质星体.
观测到重力透镜,富含尘埃和气体的1型类星体MG J0414+0534在红移z=2.64时.

主要成果:

在类星体MG J0414+0534.4中检测到一个红移2.64的水质质星体.
这颗巨星的同otropic光度是1万个太阳光度,是最强大的局部巨星的两倍.
根据当地数据,在单个活跃星系中发现这样一个发光巨星的概率非常低 (10^-6).

结论:

探测到这颗发光的水晶体表明,在红移2.64时,磁晶体体体积密度和发光度显著更高.
早期的星系 (z > 2) 可能比局部星系拥有更强大和更多的水质星体.
引力透镜是一种有效的方法,用于发现罕见的,高红移现象,如发光水晶.

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