Cosmology nuclear probe 宇宙学核探针.PDF

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Cosmology nuclear probe 宇宙学核探针

Cosmology nuclear probe 宇宙学核探针 Chen Yongshou (陈永寿) China Institute of Atomic Energy, Beijing, China Presentation at the conference on “Nuclear and Biology Physics”, 良乡,Oct. 19 , 2011. ♦Recent revolutions in cosmology ♦Big-Bang nucleosynthesis ♦Remarks Three cosmology probes They are complementary Probing very different times after BB: millions to billions years 380000 years 3 minutes Evolution of the Universe 1a Type Supernovae Accreting Nuclear Explosion matter Burning 1a型超新星观测获诺贝尔物理奖 2011 Saul Perlmutter Brian Schmidt Adam Riess 宇宙加速膨胀的发现 The expansion of the Universe Came 1998, The HST observations of very distant supernovae showed that the universe has been accelerating since 7.5 billion years back. Recent revolutions in cosmology Observations of type Ia supernova discovered that the expansion of the universe is accelerating in time. Satellite measurements(WMAP) of the microwave after glow of the Big Bang are not consistent with a universe filled with normal matter They imply a pervasive DARK ENERGY that exerts a“negative pressure” causing the acceleration We don’t understand the properties of 96% of the universe Cosmology nuclear probe - Big Bang nucleosythesis - Origin of light elements The early Universe at first three minutes Open p

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