The toothbrush-relic: evidence for a coherent 3-Mpc scale shock wave ?

Details The toothbrush-relic: evidence for a coherent 3-Mpc scale shock wave ? The toothbrush-relic: evidence for a coherent 3-Mpc scale shock wave ?

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..208r&link_type=abstract

XMM-Newton Proposal ID #06750601

Computer Science

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, J060313.4+42123

Scientific paper

Recently, we have discovered an amzing 3 Mpc radio relic. Its coherent linear morphology and enormous size are very difficult to understand in the standard scenario that relics trace shocks in the ICM induced by massive cluster mergers. With our proposed observations we will determine (i) the presence of shock waves and their properties, (ii) the number of merging sub-clusters and dynamical state of the cluster, and (iii) the temperature structure of the ICM. This will allow us then to address the following questions: (1) are we witnessing a very special configuration consisting of multiple merging events that collectively conspire to yield a linear structure? (2) is there a compelling need for a more sophisticated particle acceleration mechanism?

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