The Messenger Telescopes and Instrumentation
Modelling Data in CASA
No. 174 (December 2018), 14–17
The Common Astronomy Software Applications (CASA) package provides a powerful tool for post-processing Atacama Large Millimeter/submillimeter Array (ALMA) and Karl G. Jansky Very Large Array (VLA) observations, but contains only rudimentary functions for modelling the data. In order to derive physical parameters as well as information on the location and the kinematics of the emitting gas, modelling of the observed data is inescapable. Such modelling can take the form of inference — where physical parameters are inferred from the data — or forward modelling — where model calculations are used to produce synthetic observations for comparison with data. We present two interfaces that allow the use of modelling tools for both flavours from within CASA: the eXtended CASA Line Analysis Sofware Suite (XCLASS); and Adaptable Radiative Transfer Innovations for Submillimeter Telescopes (ARTIST).
Cite this article:
T. Möller, P. Schilke, M. Hogerheijde, I. Stewart, R. Schaaf, D. Harsono; Modelling Data in CASA. The Messenger 174 (December 2018): 14–17. https://doi.org/10.18727/0722-6691/5107