Astronomy and Astrophysics Seminars
The Diffuse Intergalactic Oxygen Surveyor (DIOS) mission
by Prof. Y. Tawara (Nagoya University, Japan)
Tuesday, December 8, 2009
from
to
(Asia/Kolkata)
at Colaba Campus ( AG-66 )
at Colaba Campus ( AG-66 )
Description |
The Diffuse Intergalactic Oxygen Surveyor (DIOS) mission is aimed at conducting high sensitivity soft X-ray survey over a wide solid angle of the sky and is designed based on the scientific goal of detecting warm-hot intergalactic medium (WHIM). WHIM is important probe to study large-scale structure of the universe formed by the dark matter and can be traced by oxygen K-lines since the temperature of WHIM is considered to be 105 - 107K. Goal of our mission is to perform imaging-spectroscopy of OVII (561, 568, 574 eV) and OVIII(653 eV) emission lines with 2 eV resolution to reveal spatial distribution of WHIM in the red shift range of 0 < z < 0.3. The core instruments are four-stage X-ray telescope FXT and the focal plain instrument XSA (X-ray Spectrometer Array). Present status of the DIOS mission is shown in this talk. |
Organised by | Magnes Johny S |