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Fig. 2


Synchrotron and IC modelling of the radio halo (H) in A2255. The black points and arrow are the currently available radio data and HXR upper-limit, respectively, from Table 1. We show the thermal ICM and CXB emissions, together with the ASTRO-H HXI sensitivity for 1 Ms of observations scaled to the halo angular size. The green lines show the models for the current volume-average lower limit BV (solid), and for Bdt (dashed) and (dotted) for 1 Ms of observations.

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