Version 4 (modified by Gary J. Ferland, 2 years ago) (diff)

xi definition change

Known Problems with C13

This page lists the known problems with this version of Cloudy. A known problem means that we know about the problem but the fix is too difficult to implement in the current version.

Format for known problems: We should include a simple description of the problem itself, avoiding computer or physics jargon, an estimate of when and how the problem will be fixed, an acknowledgment to the person who pointed out the problem if appropriate, and the date when the problem was entered on this page.


We have changed our definition of the xi ionization parameter to be consistent with XSTAR. Through versions C13.03 we defined xi as the total luminosity in ionizing photons, the original Tarter definition. The X-ray community uses the Kallman & Bautista (2001) definition, which integrates the SED between 1 and 1000 Rydbergs. The 1 - 1000 Ryd definition is part of C13.04 and later versions of the code. This only makes a difference for very hard SEDs.

We thank Ildar Khabibullin for drawing our attention to this.


He I Case B predictions are incorrect

The main output includes interpolated He I Case B predictions. They are incorrect and should not be used. This problem is fixed in C13.01.

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