Emission Measure input

[Sandino Estrada Dorado]

Hello everyone.

I start using ChiantiPy before I found the differential

emission measure and I've using the form:

input = sum(Volume*density^2)/(4*pi*distance^2)/Temperature

And now I'm working with some simulations that make

me doubt about it. Is the form correcto to use in the

emission measure input to obtain synthetic spectrum?

Thank you in advance.

[Peter Young]

Hi Sandino,

Thanks for your question. I suggest checking CHIANTI Technical Report No. 3 (https://zenodo.org/records/10452660), which explains how a synthetic spectrum is computed in CHIANTI. Normally we use column emission measure, but Sect. 10 of the document gives the conversion factor for the volume emission measure. 

Peter