Coronal emission lines as thermometers

Details Coronal emission lines as thermometers Coronal emission lines as thermometers

2009-11-20

arxiv.org/abs/0911.4085v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted by ApJ, November 2009

Scientific paper

Coronal emission line intensities are commonly used to measure electron temperatures using emission measure and/or line ratio methods. In the presence of systematic errors in atomic excitation calculations and data noise, the information on underlying temperature distributions is fundamentally limited. Increasing the number of emission lines used does not necessarily improve the ability to discriminate between different kinds of temperature distributions.

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