Data Analysis for Precision 21 cm Cosmology
  The redshifted 21 cm line is an emerging tool in cosmology, in principle
permitting three-dimensional surveys of our Universe that reach unprecedentedly
large volumes, previously inaccessible length scales, and hitherto unexplored
epochs of our cosmic timeline. Large radio telescopes have been constructed for
this purpose, and in recent years there has been considerable progress in
transforming 21 cm cosmology from a field of considerable theoretical promise
to one of observational reality. Increasingly, practitioners in the field are
coming to the realization that the success of observational 21cm cosmology will
hinge on software algorithms and analysis pipelines just as much as it does on
careful hardware design and telescope construction. This review provides a
pedagogical introduction to state-of-the-art ideas in 21 cm data analysis,
covering a wide variety of steps in a typical analysis pipeline, from
calibration to foreground subtraction to mapmaking to power spectrum estimation
to parameter estimation.
