| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Clusters of galaxies grow into the present shape via collisions and mergers of smaller objects. If clusters collide with each other, a huge amount of kinetic energy may be released and a certain fraction is expected to heat the gas and generate high-energy particles, and induce bulk and turbulent motions. To reveal the energy budget in the cluster evolution, we constrained the existence of very hot/non-thermal gas in clusters using the Suzaku satellite. From a systematic search for gas motions, we discovered the sign of large bulk motions in both regular and irregular clusters and a significant offset between the spatial distributions of gas and galaxies. Furthermore, we carried out simulations of spectral observations using high-resolution X-ray calorimeter onboard the ASTRO-H satellite and showed a possibility that we can measure the turbulent gas motion and the cluster mass with high accuracy.
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