论文标题
围核与密集的核心在暗物质分布中转移
Periapsis shifts in dark matter distribution with a dense core
论文作者
论文摘要
我们认为，围核具有密集的核心的深色物质分布的转移。我们将暗物质分布建模为各向同性气体球，即在总体相对论中指数5的emdon多潮红球。该模型具有一个参数范围，其中所有能量条件都在整个区域满足。在参数范围内，恒星运动的渐近分析使我们能够确定对有限运动的两个竞争影响：一般偏见的效应和物质的局部密度效应。此外，使用近乎圆形的结合轨道，我们证明了逆行的围产脉移动发生在中心附近，该中心效应在一般偏见的效果上占主导地位，而远处的prograde periapsis移位发生在远处，在远处发生了一般性偏移主义效应在局部密度效应上占主导地位。该结果意味着，对逆行围产期移动的自然解释不是外来物体的存在（例如，裸奇异物或虫洞），而是在恒星轨道上物理合理物质的局部分布。此外，这也暗示着脑细胞移动在区分黑洞替代方案（例如暗物质核心）和纯黑洞中起着至关重要的作用。
We consider the periapsis shifts in dark matter distribution with a dense core. We model the dark matter distribution as an isotropic gas sphere, the Emden polytropic sphere of index 5 in general relativity. This model has a parameter range where all the energy conditions are satisfied in the entire region. Within the parameter range, the asymptotic analysis for stellar motion allows us to identify two competing effects on the bounded motion: the general-relativistic effect and a local-density effect of matter. Furthermore, using nearly circular bound orbits, we demonstrate that retrograde periapsis shifts occur near the center, where the local-density effect dominates over the general-relativistic effect, whereas prograde periapsis shifts occur in the far region, where the general-relativistic effect dominates over the local-density effect. This result means that a natural explanation for the retrograde periapsis shifts is not the existence of exotic objects (e.g., naked singularities or wormholes) but the local distribution of physically reasonable matter on the stellar orbit. Furthermore, it also implies that the periapsis shift plays a crucial role in distinguishing black hole alternatives, such as dark matter cores, from a pure black hole.
