Revisiting Rotation Measures from the Canadian Galactic Plane Survey:
  the Magnetic Field in the Disk of the Outer Galaxy
  Faraday rotation provides a valuable tracer of magnetic fields in the
interstellar medium; catalogs of Faraday rotation measures provide key
observations for studies of the Galactic magnetic field. We present a new
catalog of rotation measures derived from the Canadian Galactic Plane Survey,
covering a large region of the Galactic plane spanning 52 deg < l < 192 deg, -3
deg < b < 5 deg, along with northern and southern latitude extensions around l
~ 105 deg. We have derived rotation measures for 2234 sources (4 of which are
known pulsars), 75% of which have no previous measurements, over an area of
approximately 1300 square degrees. These new rotation measures increase the
measurement density for this region of the Galactic plane by a factor of two.
