题 目：Cosmological principle,dark energy and interstellar molecules
时 间：2024年12月18日（星期三）15:00
主讲人：杨晓峰
地 点：立惠楼（第13教学楼）小阶梯
主办单位：物理科学与技术学院
主讲人简介：杨晓峰，中国科学院新疆天文台研究员，2006东北林业大学物理学学士，2012中国科学院天文学博士，2016年入职中国科学院，2018意大利罗马大学物理学博士，IAU会员，QRL编辑，ATI青年编委。研究涉及宇宙大尺度结构、星系宇宙学和射电天文观测。
讲座简介：
The precise validity of cosmological principle and general relativity is the cornerstone of the standard model of modern cosmology (ΛCDM) and is the logical presupposition for the existence of dark energy. Cosmologists usually assumed that the general relativity is the perfect law of gravity from small to large scales, which has been tested by many tests in Solar system and a few cosmological tests. The cosmological principle assumes that the universe is homogeneous and isotropic on a sufficiently large scale. However, several possible challenges to cosmological principle was reported in recent years. In this talk, we will introduce our progresses on the tests of cosmological principle and related works on the models and properties of dark energy, which is the main explanation for cosmic acceleration. At the same time, we will present our recent works on the observations of interstellar molecules, which is the prelude of origin of possible extraterrestrial life.
