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Project Summary

High-energy photons in the young stellar environment are known to be important in stimulating chemical reactions of molecules and producing pre-biotic materials. In this reporting period, we studied X-ray emission from an erupting young star, young stars in a massive star forming region and a neutron star, whose ancient activity may affect current star formation. In particular, the Chandra and Suzaku observatories detected hard variable X-ray emission from the erupting young star V1647 Ori. This result suggests that the new eruption started in 2008 is driven by the same mechanism as an earlier eruption started in 2004.