Pacerman: Polarisation Angle CorrEcting Rotation Measure ANalysis
Abstract
Pacerman, written in IDL, is a new method to calculate Faraday rotation measure maps from multifrequency polarisation angle data. In order to solve the so called npiambiguity problem which arises from the observationally ambiguity of the polarisation angle which is only determined up to additions of n times pi, where n is an integer, we suggest using a global scheme. Instead of solving the npiambiguity for each data point independently, our algorithm, which we chose to call Pacerman solves the npiambiguity for a high signaltonoise region "democratically" and uses this information to assist computations in adjacent low signaltonoise areas.
 Publication:

Astrophysics Source Code Library
 Pub Date:
 October 2011
 Bibcode:
 2011ascl.soft10011D
 Keywords:

 Software