SIMULTANEOUS MEASUREMENTS OF X-RAYS AND ELECTRONS DURING A PULSATING AURORA

The PULSAUR II rocket was launched from Andoya Rocket Range at 23.43 U T on 9 February 1994 into a pulsating aurora. In this paper we focus o n the observations of precipitating electrons and auroral X-rays. By u sing models it is possible to deduce the electron energy spectrum from X-ray measurements. Comparisons are made between the deduced electron fluxes and the directly measured electron fluxes on the rocket. We fo und the shape of the observed and the deduced electron spectra to fit very well, with almost identical e-folding energies in the energy rang e from 10 keV to similar to 60-80 keV. For the integrated fluxes from 10.8 to 250 keV, we found a discrepancy of 30%. By combining two model s, we have found a good method of deducing the electron precipitation from X-ray measurements. The discrepancies between calculations and me asurements are in the range of the uncertainties in the measurements.