RETANA-MONTENEGRO , E.

With Low-Frequency Array (LOFAR) observations, we have discovered a diverse assembly of steep spectrum emission that is apparently associated with the intracluster medium (ICM) of the merging galaxy cluster Abell 2034. Such a rich variety of complex emission associated with the ICM has been observed in few other clusters. This not only...

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...