2024年3月29日, 星期五

CAA Seminar (08.05/2019) Stochastic Background of Gravitational Waves

Description

Date & Location: 2:00 PM - 3:00 PM, August 5 (Monday), DoA Seminar Room
 
Title: Stochastic Background of Gravitational Waves
 
Abstract:
The discovery of gravitational waves from the coalescence of binary black holes in 2015 has marked the dawn of the gravitational waves astronomy/cosmology. Besides the gravitational wave bursts from black hole/neutron star mergers, our universe is fulfilled by stochastic background of gravitational waves with a large range of frequencies, which may have various astrophysical/cosmological origins in the early universe, for instance incoherent superposition of binary systems, first order phase transitions, reheating after inflation, topological defects, and primordial gravitational waves. As our universe is transparent to gravitational wave, it is a fossil recording the information of its generation and how our universe evolves. In this talk I will first briefly review the stochastic background of the gravitational waves, then focus on the secondary gravitational waves induced by scalar perturbations, and discuss their connection to the primordial black holes which may be candidates for dark matter or the seeds for galaxy formation.

Location information

上海交通大学闵行校区

Country
中国
County
上海市
City
闵行区 200240
Street
800号 东川路

上海交通大学闵行校区