Another collision for the Coma cluster.

Details Another collision for the Coma cluster. Another collision for the Coma cluster.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..619v&link_type=abstract

International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 619 - 620

Astronomy and Astrophysics

Astrophysics

Clusters Of Galaxies: X-Ray Images, Clusters Of Galaxies: Coma, Clusters Of Galaxies: Structure

Scientific paper

The authors describe a wavelet transform analysis of the ROSAT PSPC images of the Coma cluster. On small scales, ≤1', the wavelet analysis shows substructure dominated by two extended sources surrounding the two brightest cluster galaxies NGC 4874 and NGC 4889. On slightly larger scales, ≡2'-3', the wavelet analysis reveals a tail of X-ray emission originating near the cluster center, curving to the south and east for ≡25', and ending near the galaxy NGC 4911. These results extend earlier ROSAT observations and indicate that the dynamic state of the cluster core is far from relaxed. The authors interpret the observations in terms of a very recent merger of a group, having a core mass of approximately 1013Msun, with the main body of the Coma cluster.

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