Understanding the stellar evolution toward supernovae and their explosion mechanisms: Toward the next generation cosmology and future observational projects

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We have studied supernovae (SNe) both in theory and observations, in terms of the multi-wavelength astronomy from radio, optical through gamma-rays. The aim is to understand the stellar evolution toward SNe and their explosion mechanisms, and we have obtained new information and insight through this project, on these important unsolved questions in astrophysics. We have also proposed new ideas on observations and theory to solve the issues aiming at upcoming future observational projects. Also studied are the properties of SNe as standard candles for the cosmological study, and feedback processes of SNe to the Galactic and cosmological evolution as highlighted by dust formation in SNe.