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DC Field | Value | Language |
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dc.contributor.author | Singh, K. P | - |
dc.date.accessioned | 2007-04-23T05:52:19Z | - |
dc.date.available | 2007-04-23T05:52:19Z | - |
dc.date.issued | 1993 | - |
dc.identifier.citation | BASI, Vol. 21, pp. 293-301 | en |
dc.identifier.uri | http://hdl.handle.net/2248/1491 | - |
dc.description.abstract | X-ray emission from clusters of galaxies is due to thermal Bremsstrahlung from a hot thin gas in the intergalactic medium. The gas is generally considered to be smoothly distributed with a size of approximately 3 Mpc. X-ray imaging with the Einstein Observatory has shown that the surface brightness departs from a symmetrical distribution or has multiple peaks (sub-structure) in nearly 30% of the clusters. Recent ROSAT observations show (1) the relaxed clusters like Coma and Abell 2256 have significant sub-clustering due to on-going mergers, (2) the existence of filamentary X-ray structure in the central regions of the cooling flow clusters, and (3) the dominance of dark matter and the lowest metal abundance in the gas in a small group of galaxies, NGC 2300. These results from ROSAT are reviewed here | en |
dc.format.extent | 1124612 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | Astronomical Society of India | en |
dc.subject | X-ray | en |
dc.subject | Clusters of galaxies | en |
dc.title | X-ray structure of clusters of galaxies with ROSAT | en |
dc.type | Article | en |
Appears in Collections: | BASI Publications |
Files in This Item:
File | Description | Size | Format | |
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paper_8.pdf | 1.1 MB | Adobe PDF | ![]() View/Open |
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