Online Seminar “Cosmology with wide-area extragalactic radio surveys”

Star-UBB Seminar Series:- Cosmology with wide-area extragalactic radio surveys

We are currently living in a blooming era of wide field optical cosmological surveys. In particular, extragalactic radio surveys will map the matter distribution at high redshifts crucial to discriminate between current cosmological theoretical models. The speaker will address two types of radio observations. One regarding the use of intensity mapping as a low resolution spectroscopic technique. The other one uses radio-continuum information. Using the full sky HIR4 simulations, he will show the prospects of measuring the growth rate of around redshift z=1 and measuring the expansion rate of the Universe by cross-correlating intensity mapping information with DESI. He will also address some of the cosmological prospects of using the Australian Square Kilometre Array Pathfinder(ASKAP) with the Evolutionary Map of the Universe survey(EMU), especially considering the EMU pilot survey and the first cosmological results using data from the Rapid ASKAP Continuum Survey.

時間:2023.11.02(四) 17:00~18:00
頻道:Zoom ID:853-7454-4159 ←
講者:Dr. Jacobo Asorey Barreiro (Departamento de Física Teorica, Universidad Complutense de Madrid, Madrid, Spain)


Scientific and Technological Advanced Research- Babeș-Bolyai University(Star-UBB) Seminar Series in Gravitation, Cosmology and Astrophysics

Presently a period of rapid and intense change are being witnessed in our understanding of the gravitational force, at a rate that is quickly increasing since the important observational discoveries of the late 1990s. With the advent of new observational techniques, the emergence of important cosmological and astrophysical paradigms can be seen that lead to a deep change in our understanding of the Universe. Astronomical observations strongly suggest that at large scales the force of gravity may not behave according to standard general relativity, and that a generalization of the gravitational action, either at the geometric level, or at the matter level, may be required for a full understanding of the gravitational interaction.

The goal of the present seminar is to bring Theoretical Gravitational Physics closer to the observations and experiments, and to discuss current topics in general relativity, high-energy physics, astrophysics and cosmology.


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