5 papers
Future Japanese missions for the study of warm-hot intergalactic medium
T. Ohashi, M. Ishida, S. Sasaki +10
We present our proposal for a small X-ray mission DIOS (Diffuse Intergalactic Oxygen Surveyor) to perform survey observations of warm-hot intergalactic medium using OVII and OVIII…
Searching for cosmic missing baryons with DIOS -- Diffuse Intergalactic Oxygen Surveyor --
Yasushi Suto, Kohji Yoshikawa, Noriko Y. Yamasaki +9
Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take a form of warm/hot intergalactic medium (WHIM) whose X-ray continuum emission is ver…
Prospects for X-ray Studies of Galaxy Clusters with Astro-E2/XRS
T. Furusho, K. Mitsuda, N. Yamasaki +2
The Astro-E2 high resolution X-Ray Spectrometer (XRS) is expected to provide a major enhancement in study of clusters of galaxies. Astro-E2 is the fifth Japanese X-ray astronomy ob…
Chandra Observations of the Gravitational Potential Structure in Abell 1060
T. Furusho, N. Y. Yamasaki, T. Ohashi
We present results from a Chandra observation of Abell 1060, the nearby cluster of galaxies. The ACIS-I image shows that the central cusp-like structure, previously seen from PSPC,…
Nonthermal Phenomena in Clusters of Galaxies
Yoel Rephaeli
Recent observations of high energy (> 20 keV) X-ray emission in a few clusters extend and broaden our knowledge of physical phenomena in the intracluster space. This emission is li…