Gnedin Oleg Y, Primack Joel R
Space Telescope Science Institute, Baltimore, MD, USA.
Phys Rev Lett. 2004 Aug 6;93(6):061302. doi: 10.1103/PhysRevLett.93.061302.
We describe a quasiequilibrium profile of dark matter particles in the inner parsec of the Galaxy, rhodm proportional to r(-3/2). This "minicusp" profile is caused by scattering with the dense stellar cluster around the supermassive black hole in Sgr A* and is independent of the initial conditions. The implications for detection of gamma rays from annihilation of weakly interacting massive dark matter particle in the Galactic center are a mild enhancement of the flux and a characteristic central feature in the angular distribution which could be detectable by high-resolution atmospheric Cherenkov telescopes.
我们描述了银河系内秒差距范围内暗物质粒子的准平衡分布，即暗物质密度ρdm与r^(-3/2)成正比。这种“微尖峰”分布是由与位于人马座A*超大质量黑洞周围密集恒星团的散射造成的，且与初始条件无关。对于探测银河系中心弱相互作用大质量暗物质粒子湮灭产生的伽马射线而言，其影响是通量有适度增强，以及在角分布上有一个特征性的中心特征，这可被高分辨率大气切伦科夫望远镜探测到。
