Time-Dependent Ionization Equilibrium and Line Radiation Under Flarelike Conditions

Authors

Menas Kafatos, Chapman UniversityFollow
W. H. Tucker, UNIV ILLINOIS

Document Type

Article

Publication Date

1972

Abstract

The results of calculations for time-dependent ionization equilibrium and line emission are presented and compared with the values obtained under the assumption that steady-state conditions prevail. In the models considered, it is assumed that the electron density is constant (=10^3 cm^-3) and that the temperature increases by a factor of 10 from 3 x 10^6 K on timescales ranging from 100 to 300 s and decays back to 3 x 10^6 K on a timescale ranging from 600 to 1400 s. Ions of oxygen and silicon are considered, and it is found that the spectrum is softer during the rise and harder during the fall than predicted by the steady-state approximation.

Comments

This article was originally published in Astrophysical Journal, volume 175, in 1972. DOI: 10.1086/151603

Recommended Citation

Kafatos, M., Tucker, W.H. (1972) Time-Dependent ionization equilibrium and Line Radiation Under Flarelike Conditions Astrophysical Journal, 175:827-841. doi: 10.1086/151603

Copyright

IOP Publishing