SEMINAR:- High-Energy Astro-Particle Physics of the Sun
The Sun has long expected to be a steady gamma-ray and neutrino(>GeV) source due to constant bombardment by energetic cosmic rays. The speaker will discuss recent progress in studies of these solar atmospheric gamma rays with the Fermi Space Gamma-ray Telescope, and the prospects of the detecting the Sun with high-energy neutrinos. Surprisingly, the gamma-ray flux was found to be higher than the previous prediction by almost a factor of 10 and displays rich and surprising features such as large time variation, hard spectrum, strange spectral features, and morphological changes. Understandings of these gamma rays could lead to a new probe of the deep layers of the solar atmosphere and cosmic-ray propagation in the solar system. Near-future TeV gamma-ray(HAWC, LHAASO) and neutrino(IceCube, KM3NeT) observations could provide additional insights to the problem, and have interesting implications for dark matter searches with the Sun.
時間：2019.05.07(二) 13:45~14:45
地點：香港中文大學 科學館北座G25室
講者：吳震宇 博士 Dr. Kenny Chun Yu NG(Department of Particle Physics and Astro Physics
Weizmann Institute of Science, Israel)
語言：英語
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此活動由香港中文大學物理系主辦。
