Search for non-thermal X-ray emission in a unique relic radio mini-halo

Details Search for non-thermal X-ray emission in a unique relic radio mini-halo Search for non-thermal X-ray emission in a unique relic radio mini-halo

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..140w&link_type=abstract

XMM-Newton Proposal ID #06733601

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Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Mrc0116+111

Scientific paper

We propose a 50 ks observation of the galaxy group MRC 0116+111. It is an ideal target for searching for non-thermal, inverse-Compton X-ray emission, because its ratio of radio to X-ray luminosity is >70 times larger than that of any other known radio mini-halo. Our short snapshot observation with Chandra reveals X-ray morphology extended along the bright radio outflows. The X-ray spectrum can be described by a thermal model with kT=0.7 keV and an extremely low apparent metallicity of Z<0.13 Solar, which indicates the presence of an additional non-thermal spectral component. The proposed observation will allow us to disentangle the non-thermal emission from the thermal component and, in combination with the existing radio data, place strong constraints on the volume averaged magnetic field.

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