Confident x-ray analysis

In future it will be possible to incorporate data from deep space telescopes into the underlying atomic models with a high degree of reliability. View of the sun: This image is a superimposition of two images, taken using the Nuclear Spectroscopic Telescope Array in the x-ray range (NuSTAR, green and blue) and the Solar Dynamics Observatory in the ultraviolet range (SDO, reddish). Here, gas is visible with temperatures between 1 and 3 million degrees. In the spectrally fragmented x-rays, the emission lines 3C and 3D of Fe XVII are dominant, as are B and C of Fe XVI. NASA /JPL-Caltech - Very hot gas, as found in the sun's corona or in close proximity to black holes, emits very intense x-rays. It reveals the locally prevailing physical conditions, such as temperature and density. But there is one problem that researchers have been battling with for decades: the intensity rates of important emission lines of iron measured in the laboratory do not match those calculated.