Kyoto University · 물리·천문학
T. Saito 교수의 연구실은 천체물리학 분야에서 활동하며, 주로 고에너지 천체에서 발생하는 초고에너지 광자(γ선)의 관측과 분석에 중점을 두고 있습니다. MAGIC 천체망원경과 펜티미터 위성 천체망원경을 활용해 블랙홀을 중심으로 하는 활동성은 간성(AGN)과 펄서의 고에너지 방출 메커니즘을 규명하고자 합니다. 특히, 우주에서의 입자 가속 메커니즘과 전자기파 스펙트럼의 비선형적 특성에 대한 이론적 모델 개선을 목표로 하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Very High Energy (VHE) gamma-ray emission from the flat spectrum radio quasar PKS 1222+21 (4C 21.35, z=0.432) was detected with the MAGIC Cherenkov telescopes during a short observation (~0.5 h) performed on 2010 June 17. The MAGIC detection coincides with high energy MeV/GeV gamma-ray activity measured by the Large Area Telescope (LAT) on board the Fermi satellite. The VHE spectrum measured by MAGIC extends from about 70 GeV up to at least 400 GeV and can be well described by a power law dN/dE
We report on the observation of -rays above 25 GeV from the Crab pulsar (PSR B0532+21) using the MAGIC I telescope. Two data sets from observations during the winter period 2007/2008 and 2008/2009 are used. In order to discuss the spectral shape from 100 MeV to 100 GeV, one year of public Fermi Large Area Telescope (Fermi-LAT) data are also analyzed to complement the MAGIC data. The extrapolation of the exponential cutoff spectrum determined with the Fermi-LAT data is inconsistent with MAGIC mea
Maintenance of an appropriate magnesium ion (Mg(2+)) concentration is essential for plant growth. In Arabidopsis thaliana, the CorA-MRS2-ALR-type proteins, named MRS2/MGT family proteins, are reportedly localized in various membranes and they function in Mg transport. However, knowledge of this family in other plant species is extremely limited. Furthermore, differential diversification among dicot and monocot plants suggested by phylogenetic analysis indicates that the role of the Arabidopsis M
