| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Research Abstract |
The origin of Gamma Ray Bursts (GRB) is still not known well. To construct the unified picture of GRBs, we need to find the diagram similar to HR diagram concerning the luminosity and the surface temperature of stars in stellar evolution theory. For this purpose we succeeded in following points. (1) We found a method to calibrate Yonetoku relation independent of cosmological models using TypeIa supernovae.(2)We found that the evolution and selection effects of Yonetoku relation are at most two sigma levels. (3) To increase the accuracy of Yonetoku relation, we should add the dependence of the relation to the duration, use only the events with small observational errors and define the physical quantities in the rest frame of GRBs.
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