Footprints of Loop I on Cosmic Microwave Background Maps
  Cosmology has made enormous progress through studies of the cosmic microwave
background, however the subtle signals being now sought such as B-mode
polarisation due to primordial gravitational waves are increasingly hard to
disentangle from residual Galactic foregrounds in the derived CMB maps. We
revisit our finding that on large angular scales there are traces of the nearby
old supernova remnant Loop I in the WMAP 9-year map of the CMB and confirm this
with the new SMICA map from the Planck satellite.
