DIOS: the Diffuse Intergalactic Oxygen Surveyor

Abstract

We present our proposal for a small X-ray mission DIOS (Diffuse Intergalactic Oxygen Surveyor), consisting of a 4-stage X-ray telescope and an array of TES microcalorimeters, cooled with mechanical coolers, with a total weight of about 400 kg. The mission will perform survey observations of warm-hot intergalactic medium using OVII and OVIII emission lines, with the energy coverage up to 1.5 keV. The wide field of view of about 50' diameter, superior energy resolution close to 2 eV FWHM, and very low background will together enable us a wide range of science for diffuse X-ray sources. We briefly describe the design of the satellite, performance of the subsystems and the expected results.

9 pages, 11 figures, a proceedings of SPIE "Astronomical Telescopes and Instrumentation" 2006

References in corpus (3)

• Chandra Detection of the First X-ray Forest along the Line of Sight To Mkn 421
• Missing Baryons and the Warm-Hot Intergalactic Medium
• Locating the Warm-Hot Intergalactic Medium in the Simulated Local Universe

Cited by in corpus (5)

• Suzaku Observations of AWM 7 Cluster of Galaxies: Temperature, Abundance and Bulk Motions
• Metal-line emission from the warm-hot intergalactic medium: I. Soft X-rays
• X-ray Spectral Study of the extended emission,'the Cap', located 11.6 kpc above the disk of M82
• Future instrumentation for the study of the Warm-Hot Intergalactic Medium
• Search for Oxygen Emission from Warm-Hot Intergalactic Medium around A2218 with Suzaku