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ASCA observations of clusters of galaxies

Published online by Cambridge University Press:  25 May 2016

Koujun Yamashita
Koujun Yamashita*
Affiliation:
Department of Physics, Nagoya University, Furo-cho, Chikusa, Nagoya 464-01 JAPAN

Extract

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X-ray emissions from clusters are most likely originated from a thin hot plasma in a collisional ionization equilibrium. The optical depth of continuum component is order of 10–3, whereas that of emission lines is around unity. Present emission models used for spectral fitting can not estimate this effect, so that the determination of elemental abundances seems to include large uncertainty. The high resolution spectroscopy with ASCA gives a clue to investigate the physical state of hot intracluster gas and a impact to reconsider the basic atomic processes. This is important issue to deeply understand the structure, formation and evolution of clusters, and the origin of intracluster gas.

Type
Radio Sources and their Environment
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 363 - 366
Copyright
Copyright © Kluwer 1996 

References

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