| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Outline of Final Research Achievements |
We clarified in 2012 that solar-type stars could cause superflares having energies over ten times larger than that of largest solar flares observed so far, based on the data obtained by Kepler spacecraft. In this program, our analyses of data by Kepler and others exhibited that the relationship between the flare duration and energy and the emergence/decay rates of starspots are consistent with those of the Sun. This suggests common underlying physical processes between solar flares and stellar superflares. We also presented that the Halpha emission profile of an M-type star during a flare showed a continuously blue-shifted component which has not been seen in the Sun and a pre-research result of impacts of stellar superflares on exoplanet atmosphere.
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