| Budget Amount *help |
¥41,860,000 (Direct Cost: ¥32,200,000、Indirect Cost: ¥9,660,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2015: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Outline of Final Research Achievements |
We have investigated the spatial distribution of inter-galactic gas and galaxies/QSOs with Subaru, SDSS, and HETDEX data. On the basis of absorption in spectroscopic data, we have created neutral hydrogen (HI) gas map, and calculated the spatial cross correlation between galaxies and HI gas at a scale up to ~100 Mpc. We find that there exists excessive HI gas above the cosmic average around the galaxies. We have also identified that HI gas is poor around galaxies in a QSO+galaxy overdensity volume. Theoretically, it can be interpreted that there is excessive HI gas in the QSO+galaxy overdensity that is converted to ionized hydrogen gas by QSO ultra-violet (UV) radiation. These results suggest that in general QSO UV radiation ionize hydrogen gas in a matter overdensity such identified by the QSO+galaxy overdensity volume.
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