Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-23
Astronomy and Astrophysics
Astrophysics
6 pages, 7 figures. To appear in the proceedings of "Modelling the Intergalactic and Intracluster Media", Vulcano Island, Octo
Scientific paper
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 observatory, which is scheduled for launch in early 2005. The XRS instrument, developed under a Japan-US collaboration, is an X-ray microcalorimeter with a capability of observing extended objects, and a high energy resolution of about 6 eV at 6 keV. The spectral resolving power is 20 times higher than CCDs over the 0.5-10 keV energy band. We have obtained several new results of clusters with Chandra and XMM, which show that high-resolution imaging spectroscopy can clarify some outstanding questions. New sciences from Astro-E2 include the first clear measurement of gas velocities, determination of ion and electron temperatures, and electron densities based on the resolved line features. We will describe the XRS instrument design, and present simulations of the expected performance.
Fujimoto Rintaro
Furusho Tae
Mitsuda Kazu
Ohashi Takuma
Yamasaki Noriko
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