Cosmic Ray反馈
Cosmic Ray Feedback
摘要：
宇宙射线产生或沉积在热的星系团气体中，被认为提供了形成X射线腔的压力。虽然空洞对团簇气体有净冷却作用，但年轻的、膨胀的空洞会驱动激波，增加局部熵。空洞也会产生热气体的径向细丝，并且是通过空洞壁扩散的簇宇宙射线的来源，就像室女座中的射电瓣围绕着径向热细丝一样。宇宙射线也使热气体局部浮力，允许大量低熵气体被输送到冷却半径之外。连续的空腔保持浮力外流，保持集群气体温度和气体分数的轮廓，并显着降低到中央黑洞的冷却速率。
英文摘要：
Cosmic rays produced or deposited at sites in hot cluster gas are thought to provide the pressure that forms X-ray cavities. While cavities have a net cooling effect on cluster gas, young, expanding cavities drive shocks that increase the local entropy. Cavities also produce radial filaments of thermal gas and are sources of cluster cosmic rays that diffuse through cavity walls, as in Virgo where a radio lobe surrounds a radial thermal filament. Cosmic rays also make the hot gas locally buoyant, allowing large masses of low entropy gas to be transported out beyond the cooling radius. Successive cavities maintain a buoyant outflow that preserves the cluster gas temperature and gas fraction profiles and dramatically reduces the cooling rate onto the central black hole.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
