The NRL SOLRAD 10 satellite carries six ionization chambers to measure solar X-radiation in the 0.5 to 60 ~ wavelength band. The X-ray emission spectrum in this range is determined by the derivative of the coronal emission measure ( [Ne2d V) with respect to temperature when the thermal processes of
A new method for the multitemperature analysis of solar X-ray line emission
โ Scribed by M. Siarkowski
- Publisher
- Springer
- Year
- 1983
- Tongue
- English
- Weight
- 374 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
โฆ Synopsis
An application of nonlinear least squares methods for determining the temperature models of coronal active regions, based on the measured X-ray line intensities, is described. These methods allow to obtain a better agreement of the observed and measured X-ray line fluxes than the methods which are used at the present time. If the line emission functions are dependent on the electron density, the new method also allows to study the temperature dependence of the mean electron density in the X-ray active region.
๐ SIMILAR VOLUMES
Observational evidence suggests that both the hard X-ray and ultraviolet emission from the impulsive phase of flares result from an electron beam. We present the results of model calculations that are consistent with this theory. The impulsive phase is envisioned as occurring in many small magnetica
An improved X-ray polarimeter is briefly described and preliminary results of the measurements carried out on the satellite 'Intercosmos-7' are presented. One flare with considerable polarization (P~> 16%) was observed on 1972 August 4. Two other flares with rather low polarization (P ~ 4 %; P/> 2 %