Imaging X-ray Polarimetry Explorer
S. Gunji on behalf of M. Weisskopf, B. Ramsey, S. O’dell, and IXPE team
Since 1960′, X-ray astronomy has made great advance with the observation of energy, timing, and imaging. On the other hand, the polarization observation has been hardly carried out except for the observation of the Crab Nebula by OSO8 because of the difficulty for the development of the detector. However, the advance of the imaging technology for the emitted electron track due to photo-absorption in gas has made possible the development of X-ray polarimeter with high sensitivity. The Imaging X-ray Polarimetry Explorer (IXPE) is the polarimeter with imaging capability developed by the collaboration of NASA/MSFC and Italian group. It will be launched in 2020 and will observe several types of stellar objects such as SNR, AGN, and pulsars with four parameters of energy, timing, imaging, and polarization. I will introduce the performance of IXPE and the implication of the science.