| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Pulsar wind nebulae (PWNe) are known as cosmic electron-positron accelerators. However, it has been unclear how the accelerated electrons and positrons escape from the pulsar and diffuse into surrounding space. Since such high energy particles emit X-ray, X-ray observation is the best probe to tackle this issue. In this study, we performed X-ray observations of the Vela PWN, which is the nearest to us. We found that there is a yet unknown component prevailing almost
isotropically in addition to already known complex structure around the pulsar. We also discovered new PWN candidates and estimated a metallicity of the progenitor of Kepler's supernova.
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