Discovery of a Strong Spiral Magnetic Field Crossing the Inner Pseudoring of Ngc 4736

@inproceedings{Chyy2008DiscoveryOA,
  title={Discovery of a Strong Spiral Magnetic Field Crossing the Inner Pseudoring of Ngc 4736},
  author={Krzysztof T. Chyży and Ronald J. Buta},
  year={2008}
}
We report the discovery of a coherent magnetic spiral structure within the nearby ringed Sab galaxy NGC 4736. High sensitivity radio polarimetric data obtained with the VLA at 8.46GHz and 4.86GHz show a distinct ring of total radio emission precisely corresponding to the bright inner pseudoring visible in other wavelengths. However, unlike the total radio emission, the polarized radio emission reveals a clear pattern of ordered magnetic field of spiral shape, emerging from the galactic centre… CONTINUE READING