SIMBAD references

2001A&A...369..441G - Astronomy and Astrophysics, volume 369, 441-449 (2001/4-2)

A comparison of radio and X-ray morphologies of four clusters of galaxies containing radio halos.


Abstract (from CDS):

Clusters of galaxies may contain cluster-wide, centrally located, diffuse radio sources, called halos. They have been found to show morphologies similar to those of the X-ray emission. To quantify this qualitative statement we performed a point-to-point comparison of the radio and the X-ray emission for four clusters of galaxies containing radio halos: Coma, Abell 2255, Abell 2319, Abell 2744. Our study leads to a linear relation between the radio and the X-ray surface brightness in two clusters, namely Abell 2255 and Abell 2744. In Coma and A2319 the radio and the X-ray brightnesses seem to be related with a sub-linear power law. Implications of these findings within simple radio halo formation models are briefly discussed.

Abstract Copyright:

Journal keyword(s): radiation mechanism: non-thermal - radio continuum: general - galaxies: clusters: general - galaxies: intergalactic medium - magnetic fields

Simbad objects: 5

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