Apr 24, 2013
Glennys Farrar, New York University
"The Galactic Magnetic Field"
I will describe work done in collaboration with R. Jansson to determine the Galactic magnetic field using Rotation Measures of 40,000 extragalactic sources and 22 GHz WMAP synchrotron maps. We have a 22 parameter model of the coherent and striated components of the GMF and a 13 parameter model of the random field. The data required us to include features in the model that had not been previously considered. Implications and open questions will be discussed.