Khoa Vật lý trân trọng kính mời quý vị đến dự Seminar số 2
trong tháng 1/2019
Ngày: 15/01/2019 (Thứ 3)
Giờ: từ 10 giờ 00 sáng đến 11 giờ 00 sáng
Địa điểm: Phòng 408F, nhà T1, TrườngĐại học Khoa học Tự nhiên, 334Nguyễn Trãi
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Speaker: Dr. GUILLAUME PATANCHON (University Paris Diderot, AstroParticle and Cosmology Laboratory)
(TS. GUILLAUME PATANCHON là một thành viên của dự án vệ tinh Planck rất nổi tiếng và quan trọng, bên cạnh WMAP)
Title: THE COSMIC MICROWAVE BACKGROUND
ANISOTROPIES AND POLARIZATION
Abstract: The Universe is expanding and its dynamics is
described by the cosmological model based on Einstein’s general relativity. However,
the nature of the two main components of the Universe, the dark energy and dark
matter, as well as the physics of the early phases of the Universe happening a
fraction of second after the Big-Bang are not understood today. The Cosmic
Microwave Background (CMB) is a relic emission filling the whole Universe at
the temperature of 2.75K today and was released 380000 years after the Big-Bang
when the electrons and protons combined to form the first atoms. The small
temperature fluctuations of the CMB, of the order of 100 mK, are a wonderful
probe providing information about those unknown quantities, constraining the
physical conditions in the primordial Universe, in particular with the
measurement of the polarization of the emission. In this seminar I will
introduce the cosmological model, the physics of the CMB and present recent
observations of the CMB in particular with the Planck satellite.
