Fermion or Boson Dark Matter?

• 作者: Bruce Hoeneisen
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 物理学
• 关键词: Dark Matter Free-Streaming Galaxy Mass Distribution Spiral Galaxy
• 年，卷（期）: 2020,（3）
• 页码范围: 203-223
• 页数: 21页
• 分类号: O57

摘要

We measure properties of dark matter in four well motivated scenarios: fermions with ultra-relativistic thermal equilibrium (URTE), bosons with URTE, fermions with non-relativistic thermal equilibrium (NRTE), and bosons with NRTE. We attempt to discriminate between these four scenarios with studies of spiral galaxy rotation curves, and galaxy stellar mass distributions. The measurements show evidence for boson dark matter with a significance of 3.5σ, and obtain no significant discrimination between URTE and NRTE.