A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is
Numerical methods for non-LTE line radiative transfer: Performance and convergence characteristics
Astronomy and Astrophysics
Comparison is made between a number of independent computer programs for radiative transfer in molecular rotational lines. The test models are spherically symmetric circumstellar envelopes with a given density and temperature profile. The first two test models have a simple power law density distribution, constant temperature and a fictive 2-level molecule, while the other two test models consist of an inside-out collapsing envelope observed in rotational transitions of HCO+. For the 2-leveldoi:10.1051/0004-6361:20021226 fatcat:cez4zkkzfzcxreaw6edlssqqqe