| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Clusters of galaxies are the largest objects in the universe, and the pressure due to complex gas motions inside them are thought to cause uncertainties in estimating the mass of dark matter. We succeeded in measuring the turbulent motion at the center of the Perseus cluster and showed that the pressure due to the gas motion is small. In preparation for the future high-resolution spectroscopy, we performed simulations to examine the variety of gas motions and the accuracy of mass measurement in detail. Furthermore, we systematically studied X-ray properties of clusters that were newly discovered by the Subaru telescope to find that the simple theoretical model cannot explain the observed relationship between the gas temperature and luminosity and the evolution.
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