论文标题
白色矮人中的超轻骨化暗物质和潜在的观察后果
Ultralight bosonic dark matter in white dwarfs and potential observational consequences
论文作者
论文摘要
流体和超轻的骨气暗物质可以通过重力相互作用，形成稳定的福尔米玻色恒星，这是爱因斯坦 - 欧拉（Einstein-Euler）（复杂，巨大）klein-gordon系统的静态和常规混合溶液。在这项工作中，我们研究了通过球形混合白紫色 - 玻色子星的重力冷却的动态形成，其特性取决于玻色子颗粒质量和玻色子恒星的质量。由于玻色粒暗物质的积聚，白色矮人用玻色颗恒星芯迁移到更密集的物体，从而改变了其引力红移并改变了从光球发出的电磁辐射。我们讨论了重力红移的变化原则上可以由任何类型的暗物质产生的，这可能会导致估计质量和从白矮人观察的质量和半径的差异。
Fluid and ultralight bosonic dark matter can interact through gravity to form stable fermion-boson stars, which are static and regular mixed solutions of the Einstein-Euler-(complex, massive) Klein-Gordon system. In this work we study the dynamical formation via gravitational cooling of a spherical mixed white-dwarf--boson star, whose properties depend on the boson particle mass and the mass of the boson star. Due to the accretion of bosonic dark matter, the white dwarf migrates to a denser and more compact object with a boson star core, thus modifying its gravitational redshift and altering the electromagnetic radiation emitted from the photosphere. We discuss the implications of the changes in the gravitational redshift that in principle could be produced by any type of dark matter and that might lead to small discrepancies in the estimation of masses and radii derived from white dwarf observations.
