Midori Ozawa

Suzaku Discovery of the Strong Radiative Recombination Continuum of Iron from the Supernova Remnant W49B (2009)

Ozawa, Midori, Koyama, Katsuji, Yamaguchi, Hiroya, Masai, Kuniaki, Tamagawa, Toru

We present a hard X-ray spectrum of unprecedented quality of the Galactic supernova remnant W49B obtained with the Suzaku satellite. The spectrum exhibits an unusual structure consisting of a...

Discovery of Strong Radiative Recombination Continua from The Supernova Remnant IC 443 with Suzaku (2009)

Yamaguchi, Hiroya, Ozawa, Midori, Koyama, Katsuji, Masai, Kuniaki, Hiraga, Junko S., Ozaki, Masanobu, ...

We present the Suzaku spectroscopic study of the Galactic middle-aged supernova remnant (SNR) IC 443. The X-ray spectrum in the 1.75-6.0 keV band is described by an optically-thin thermal plasma with...

New CTI Correction Method for the Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer (2008)

Uchiyama, Hideki, Ozawa, Midori, Matsumoto, Hironori, Tsuru, Takeshi Go, Koyama, Katsuji, Kimura, Masashi, ...

The charge transfer inefficiency (CTI) of the X-ray CCDs on board the Suzaku satellite (X-ray Imaging Spectrometers; XIS) has increased since the launch due to radiation damage, and the energy...

Energy-Scale Calibration of the Suzaku X-Ray Imaging Spectrometer Using the Checker Flag Charge Injection Technique in Orbit (2008)

Ozawa, Midori, Uchiyama, Hideki, Matsumoto, Hironori, Nakajima, Hiroshi, Koyama, Katsuji, Tsuru, Takeshi Go, ...

The X-ray Imaging Spectrometer (XIS) on board the Suzaku satellite is an X-ray CCD camera system that has superior performance such as a low background, high quantum efficiency, and good energy...

X-ray Spectral Study of the extended emission,'the Cap', located 11.6 kpc above the disk of M82 (2006)

Tsuru, Takeshi Go, Ozawa, Midori, Hyodo, Yoshiaki, Matsumoto, Hironori, Koyama, Katsuji, Awaki, Hisamitsu, ...

The extended X-ray emission from 'the Cap' region located 11' (11.6 kpc) above the disk of the starburst galaxy M82 has been observed with Suzaku and XMM-Newton. Owing to the good energy resolution...