2000年10月1日日曜日

X-ray spectroscopy of the cluster of galaxies Abell 1795 with XMM-Newton

Accepted on A&A in 2001.

Abstract
The initial results from XMM-Newton observations of the rich cluster of galaxies Abell 1795 are presented. The spatially-resolved X-ray spectra taken by the European Photon Imaging Cameras (EPIC) show a temperature drop at a radius of $\sim$200 kpc from the cluster center, indicating that the ICM is cooling. Both the EPIC and the Reflection Grating Spectrometers (RGS) spectra extracted from the cluster center can be described by an isothermal model with a temperature of $\sim$4 keV. The volume emission measure of any cool component (VIII Lyman $\alpha$ line was detected with the RGS from the cluster core. The O abundance and its ratio to Fe at the cluster center is 0.2-0.5 and 0.5-1.5 times the solar value, respectively.

http://adsabs.harvard.edu/abs/2001A%26A...365L..87T

citation papers
http://goo.gl/4iwcJC



2000年2月1日火曜日

A new life in SRON, Utrecht, NL

On 2000-2, I moved to SRON, Utrecht, the Netherlands.
I got a post-doc position to work on XMM-Newton RGS instrument and data of X-ray clusters.
I worked as a member of the RGS team along with Drs. J.S.Kaastra, J.W.den Herder, and C. de Vries, J.Bleeker and other staff.

I had worked at SRON for three years. I liked this position very much.