학과 세미나

콜로키움

2022년 4월 7일 세미나 공고문
2022년 4월 7일 세미나 공고문
작성자 천문우주과학과
조회수 280 등록일 2022.04.04

일시:  2022년 4월 7일 목요일 오후 4시 세미나실(자4514호)
         (https://cnu-ac-kr.zoom.us/j/2677604561) 


연사:  심준섭 박사님(고등과학원)

 

제목: The Clustering Features of Critical Points in the Cosmic Web  

 초록:  

Critical points of a density field are points where the gradient of the density field vanishes. Critical points are typically the formation sites of the Cosmic web. The position and height of critical points encode the topology of the underlying density field. In this talk, I will discuss the cosmic evolution of the clustering features of peak-, filament-, wall-, void-type critical points focusing on both small and baryonic acoustic oscillation scales. A qualitative comparison to the corresponding theory for Gaussian random fields to understand the observed features will also be discussed. Finally, I will summarize by relating these findings to the "Cosmic crystal" structure.