9th of January 2015 |
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2014 Science Highlights |
Deep radio
observations of the radio halo of the bullet cluster 1E 0657-55.8 |
Shimwell et al. (2014) present deep 1.1-3.1
GHz Australia Telescope Compact Array observations of the radio halo of the
bullet cluster, 1E 0657-55.8. In comparison to existing images of this radio
halo, the detection in their images is at higher significance. The radio halo
is as extended as the X-ray emission in the direction of cluster merger but
is significantly less extended than the X-ray emission in the perpendicular
direction. These observations support the theory that shocks and turbulence
influence the formation and evolution of radio halo synchrotron emission. |