Talk detail

Participant	Hayashi, Takayuki
Institution	ISAS/JAXA - 3-1-1 Yoshinodai, Chuo-ku - sagamihara - Kanagawa - Japan

Session	SO4	Accepted		Order	Time
Talk	Oral abstract	Title	Suzaku searches for WD pulsars with a spectral model of post-shock regions
Co-authors
Abstract	As reported in Terada et al. (2008), we discovered a non-thermal hard X-ray radiation above 10 keV from a intermediate polar AE Aquarii, which showed that WDs can accelerate high energetic particles, that is, cosmic-rays. Those WDs are named as gWD pulsarsg. On the other hand, the intermediate polars generally emit thermal hard X-ray from their post-shock region where accreting plasma is channelled by strong magnetic field of the WDs. The thermal hard X-ray contaminates that of the non-thermal and makes it difficult to search for the WD pulsars. In this work, we used a thermal X-ray spectral model of the intermediate polars involving the change of the gravitational potential in their post-shock region (Cropper et al. 1999) for the first time for the WD pulsar search. With aid of XIS and HXD onboard suzaku satellite, we succeeded in high accuracy estimation or constrain of the non-thermal radiation flux for V2487 Ophiuchus and IGR J00234+6141 whose spectra are especially hard even in intermediate polars.