diffuse radio emission tagged posts

Using the LOw Frequency ARray (LOFAR), astronomers from the University of Bologna, Italy and elsewhere, have conducted radio observations of the nearby galaxy cluster Abell 2142. In result, they detected a new component of the cluster’s giant radio halo. The finding was presented in a paper published August 15 on the pre-print server arXiv.

Galaxy clusters contain up to thousands of galaxies bound together by gravity. They are the largest known gravitationally bound structures in the universe, and could serve as excellent laboratories for studying galaxy evolution and cosmology.

Radio halos are enormous regions of diff...