ПИСЬМА В АСТРОНОМИЧЕСКИЙ ЖУРНАЛ, 2020, том 46, № 1, с. 76

Study on electron density diagnostics of silicon VIII ion for

non-Maxwellian distribution in solar transition region

¹School of Physics and Engineering, Henan University of Science and Technology, Luoyang, 471023, China

Поступила в редакцию 27.03.2019 г.

После доработки 19.11.2019 г.; принята к публикации 05.12.2019 г.

For accurate electron density diagnostics in the solar transition region, the principle of electron density

diagnostics are discussed by lines from silicon ion for kappa and Maxwellian distributions. By observed

line ratio of the silicon 1440.50

A to 1445.75

A lines in quiet sun and active region, the electron density

is discussed for any observed line ratio, and results are consistent with reported values in literature.

The relationships between line ratio and electron density for the kappa and Maxwellian distributions are

also discussed, in the case of lower and higher electron density limits, and results indicate that different

distributions have no effect on relationships between the line ratio and the electron density at lower or

higher electron density limit. This discussion is significant for accurate electron density diagnostics in the

solar transition region, which will be important for study on coronal heating and acceleration of solar wind.

Keywords: Solar transition region, electron density diagnostics, non-Maxwellian distribution.

DOI: 10.31857/S0320010820010027

¹ Полностью статья публикуется в английской версии журнала (Astronomy Letters vol. 46, No. 1, 2020).

*E-mail: hejian405@163.com