| Budget Amount *help |
¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Outline of Final Research Achievements |
The epoch after recombination and reionization of the universe by UV lights emitted from the first class of stars and galaxies is called the dark age, because still there are few observational information on that epoch. Here we focus on 21cm line of neutral hydrogen atoms because they should be abundant at that epoch. Through the distribution of neutral hydrogen gas and the number of mini-halos that hosted first stars and galaxies by using 21cm emission and absorption lines, we investigate how we can extract information on cosmological parameters and physical conditions of reionization of the universe.
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