Discovery of Radio Jets in Phoenix Galaxy Cluster Center
  We report the results of the Australia Telescope Compact Array (ATCA) 15 mm
observation of the Phoenix galaxy cluster possessing an extreme star-burst
brightest cluster galaxy (BCG) at the cluster center. We spatially resolved
radio emission around the BCG, and found diffuse bipolar and bar-shape
structures extending from the active galactic nucleus (AGN) of the BCG. They
are likely radio jets/lobes, whose sizes are ~10-20 kpc and locations are
aligned with X-ray cavities. If we assume that the radio jets/lobes expand with
the sound velocity, their ages are estimated to be ~10 Myr. We also found
compact radio emissions near the center and suggest that they are another young
bipolar jets with ~1 Myr of age. Moreover, we found extended radio emission
surrounding the AGN and discussed the possibility that the component is a
product of the cooling flow, by considering synchrotron radiation partially
absorbed by molecular clumps, free-free emission from the warm ionized gas, and
the spinning dust emission from dusty circum-galactic medium.
