銀河系巨型氣泡、暗物質及未來伽馬射線太空望遠鏡


Seminar: Gigantic Bubbles, Dark Matter, and Future Space Gamma-ray Telescopes
 
Space gamma-ray astronomy was born at MIT more than half century ago. A few gamma-ray satellites operated since then, in particular the most recent Fermi Gamma-ray Space Telescope, have proved the great potential of studying astrophysics, cosmology, and fundamental physics through the gamma-ray sky. While searching for potential gamma-ray signal of dark matter particle toward the Galactic Center, we discovered a pair of gigantic bubbles in the Milky Way, probably associated with past activities of the central supermassive black hole. Indirect search of dark matter particles with gamma-ray and cosmic-ray observations have further motivated a few future space telescopes, including DAMPE, HERD, and PANGU. Together with the next generation of ground-based Cherenkov telescopes e.g. CTA and LHAASO, we will be able to measure gamma-ray photons/cosmic rays with energies across nine decades of energies from MeV to above PeV with much improved sensitivity. Finally, I hope to briefly introduce recent effort to search for primordial gravitational waves produced from cosmic inflation by observing the Cosmic Microwave Background from both space and ground.
 
時間:2016.01.13(三) 17:00
地點:香港大學 莊月明物理樓 522室
講者:Dr. Meng SU 苏萌 博士 (Joint MIT Pappalardo / NASA Einstein Fellow, Department of Physics, Massachusetts Institute of Technology) 
語言:英語

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【訊息由張詠倫提供】

此活動由香港大學物理學系主辦。

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