ROTTGERING , H.

The connection between the thermal and non-thermal properties in galaxy clusters hosting radio halos seems fairly well established. However, a comprehensive analysis of such a connection has only been done for integrated quantities (e.g. L X − P radio relation). In recent years, new-generation radio telescopes have enabled the unprecedented...

We present the first wide area (19 deg2), deep (≈ 120–150 μJy beam−1), high resolution (5.6× 7.4 arcsec) LOFAR High Band Antenna image of the Bo ̈otes field made at 130-169 MHz. This image is at least an order of magnitude deeper and 3 − 5 times higher in angular resolution than previously achieved for this field at low frequencies. The...