Kavli Affiliate: Shinichiro Takeda | Summary:The Crab nebula originated from a core-collapse supernova (SN) explosion observed in 1054 A.D. When viewed as a supernova remnant (SNR), it has an anomalously low observed ejecta mass and kinetic energy for an Fe-core collapse SN. Intensive searches were made for a massive shell that solves this discrepancy, but […]
Continue.. Search for Thermal X-ray Features from the Crab nebula with Hitomi Soft X-ray Spectrometer