论文标题
早期宇宙中原始暗物质行星的演变
Evolution of Primordial Dark Matter Planets in the Early Universe
论文作者
论文摘要
在最近的一篇论文中，我们讨论了在高红移处形成原始行星DM的可能性，该行星完全由DM组成，是不检测DM的原因之一（因为环境DM颗粒的通量将减少）。在本文中，随着宇宙的扩展，我们讨论了这些DM对象的演变。随着宇宙的扩展，这些物体将有DM，氦和氢层的积聚（详细讨论）。随着它们积累越来越多的质量，层被加热，导致核反应燃烧H，当达到临界厚度时，他会燃烧H。在这些DM对象的重量较重的情况下，可以爆炸物质。发现射血的时间尺度比其他紧凑型物体（如中子恒星）（导致X射线突发）的时间尺度小。这些能量闪光可能是这些密集的DM对象的观察性签名。
In a recent paper we had discussed possibility of DM at high redshifts forming primordial planets composed entirely of DM to be one of the reasons for not detecting DM (as the flux of ambient DM particles would be consequently reduced). In this paper we discuss the evolution of these DM objects as the Universe expands. As Universe expands there will be accretion of DM, helium and hydrogen layers (discussed in detail) on these objects. As they accumulate more and more mass, the layers get heated up leading to nuclear reactions which burn H and He when a critical thickness is reached. In the case of heavier masses of these DM objects, matter can be ejected explosively. It is found that the time scale of ejection is smaller than those from other compact objects like neutron stars (that lead to x-ray bursts). These flashes of energy could be a possible observational signature for these dense DM objects.
