论文标题
暗物质在扩展结构中通过暗物质进行微透明
Gravitational microlensing by dark matter in extended structures
论文作者
论文摘要
暗物质可能是以非巴里型结构的形式，例如紧凑型Subhalos和玻色子星。可以通过重力微透镜发现了在小行星和太阳能之间称重的结构，这是一种天文学探针，这些探针过去曾经有助于限制原始黑洞和男性大男子气概的种群。我们研究了这些结构内的大小和密度分布对微透析信号的非平地作用，并使用EROS-2和OGLE-IV调查来限制其种群。大于太阳半径的结构通常比点状透镜更弱，但是对于具有质量分布的结构，可以获得更强的限制，从而产生苛性速度或产生更大的宏伟质量。
Dark matter may be in the form of non-baryonic structures such as compact subhalos and boson stars. Structures weighing between asteroid and solar masses may be discovered via gravitational microlensing, an astronomical probe that has in the past helped constrain the population of primordial black holes and baryonic MACHOs. We investigate the non-trivial effect of the size of and density distribution within these structures on the microlensing signal, and constrain their populations using the EROS-2 and OGLE-IV surveys. Structures larger than a solar radius are generally constrained more weakly than point-like lenses, but stronger constraints may be obtained for structures with mass distributions that give rise to caustic crossings or produce larger magnifications.
