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Energy sources for X-ray cluster emission

Morley, P. D. and Tucker, Robin (1979) Energy sources for X-ray cluster emission. Nature, 278. pp. 235-236. ISSN 0028-0836

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Abstract

SOME galactic clusters are strong X-ray emitters1, and we here the problem of establishing certain models for the source of this radiation. In the first model we suppose that the X rays are thermal bremsstrahlung from a hot quasi-isothermal inter-cluster gas. Typical parameters for the temperature, particle density and total mass of the gas are2 T ~ 3 × 108 K, n ~ 10−3, M ~ 3 × 1044 kg. If we assume3 relative nuclei solar abundances, then the thermal energy contained in the gas is E T ~ 2 × 1064 erg. This is ~10% of the total rest mass energy of a 1011 M circle dot galaxy and clearly poses a problem for potential energy sources.

Item Type: Article
Journal or Publication Title: Nature
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 74899
Deposited By: ep_importer_pure
Deposited On: 03 Aug 2015 12:38
Refereed?: Yes
Published?: Published
Last Modified: 30 Aug 2017 14:45
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/74899

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