2012年度 物質生命理工学科コロキウム

"TeV gamma-ray astronomy – a new window on the high-energy Universe"
講師：Dr. John Quinn (University College Dublin, Ireland：本学海外招聘客員教授)

日時/場所	2012年6月25日（月） 15:15～16:45 （11号館 221号室）

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　講師にDr. John Quinn (University College Dublin, Ireland：本学海外招聘客員教授) をお招きして、以下の内容でご講演いただきます。皆様お誘い合わせのうえご参加ください。
＊申込不要・参加無料・学生、学外の方の聴講歓迎

"TeV gamma-ray astronomy – a new window on the high-energy Universe"

Gamma rays are absorbed by the Earth’s atmosphere, requiring detectors for gamma-ray astronomy to be flown on board satellites. However, at high-enough energies (~ a TeV, 10 to the power of 12 electron volts) gamma rays may be detected indirectly via the showers of thousands of particles they create in the atmosphere: these particles emit Cherenkov radiation that can be detected with optical instrumentation. There are currently three state-of-the-art observatories in operation (VERITAS in Arizona, MAGIC in La Palma, and HESS in Namibia) that utilize this technique and, to date, more than 130 astronomical sources have been detected. The source catalogue includes supernova remnants, pulsars, binary systems starburst galaxies, and jets powered by supermassive black holes at the centers of active galaxies. In this talk I will describe the instrumentation and techniques used for TeV gamma-ray astronomy, with emphasis on the VERITAS array, which is the main instrument used by my research group, and provide an overview of the scientific highlights to date.

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