星系生态中重子循环的喷泉模式
Fountain pattern of baryon cycle revealed in galaxy ecosystems
- University of Science and Technology of China（中国科学技术大学）
- Nanjing University（南京大学）
- University of Massachusetts, Amherst（马萨诸塞大学阿默斯特分校）
- Nanjing Normal University（南京师范大学）
- Xiamen University（厦门大学）
- Durham University（杜伦大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文提出叠加方法，从星系生态系统的重子场中揭示出规则的喷泉式循环模式，并与观测一致，为连接模拟与观测提供框架。
AI中文摘要：
星系生态系统中的重子被认为经历着持续的流入与流出循环，形成类似喷泉的模式，这些模式编码了星系如何从环境中获取物质并通过反馈作出响应的关键信息。此类重子循环的存在已从零散的观测证据中推断出来，但由于单个星系生态系统多样且动态变化，对其具体理解仍难以捉摸。在此，我们提出一种叠加方法，将多个星系生态系统的重子场组合起来，以抑制不规则性并揭示潜在模式。将该方法应用于宇宙学流体动力学模拟，揭示了星系生态系统整个空间范围内气体性质中显著规则的模式，与从观测推断的结果高度一致。该方法易于实现，使得在结构形成范式内能够充分理解塑造气体循环模式的过程，并为将模拟星系生态系统与观测联系起来构建坚实框架。
英文摘要：
Baryons in galaxy ecosystems are believed to undergo continuous cycles of inflow and outflow, forming fountain-like patterns that encode key information about how galaxies acquire matter from their environments and respond through feedback. The presence of such baryon cycles has been inferred from pieces of observational evidence, but a concrete understanding remains elusive because individual galaxy ecosystems are diverse and dynamic. Here we introduce a stacking method that combines baryonic fields across ensembles of individual galaxy ecosystems to suppress irregularities and reveal the underlying pattern. Applied to a cosmological hydrodynamic simulation, this approach unveils strikingly regular patterns in gas properties across the full spatial extent of galaxy ecosystems, in close agreement with those inferred from observations. This method is straightforward to implement, allowing the processes shaping the gas-cycling pattern to be fully understood within the structure-formation paradigm, and a solid framework to be constructed for linking simulated galaxy ecosystems with observations.
