Webinar〝New avenues to the Cosmological Gravitational Wave Background〞

The Stochastic Gravitational Wave Background is one of the main targets of present and future detectors. Characterising its properties is crucial to pin down its origin and distinguish among the various possible sources. In this talk the speaker will mainly consider the Cosmological Gravitational Wave Background(CGWB) and discuss a variety of new observables that can help reaching such a characterization. In particular he will focus on angular anisotropies of the CGWB and their cross-correlations with Cosmological Microwave Background(CMB). They do indeed retain crucial information about the primordial mechanisms that source the CGWB and about the evolution and the particle content of the universe. Therefore, they can provide a new testbed of various aspects of cosmology, from Early Universe physics (e.g., inflation, primordial black holes and primordial non-Gaussianity) to a new way to constrain cosmological parameters and test General Relativity. The speaker will discuss the physics of CGWB anisotropies and their cross-correlations with CMB, and a few examples of future applications.

時間:2023.05.16(二) 21:00~21:20
頻道:Zoom ID:421-480-1692 ← cosmology
講者:Nicola Bartolo (Università di Padova and INstitute For Nuclear physics(INFN), Padua, Italy and Padua Observatory)



Università di Padova ↹ Padua University

“Copernicus Webinar and Colloquium Series”: To promote scientific discussions during this pandemic, they are organizing an online seminar series, i.e. Copernicus Webinar Series, seeking the most outstanding speakers to introduce innovative ideas and important progress in the field of gravity and cosmology. This series is named after the famous Polish Astronomer, Nicolaus Copernicus, whose discovery eventually marked the dawn of modern science.




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