Abstract
Recent far ultraviolet spectra of four nightside auroras observed with the extreme ultraviolet (e.u.v.) spectrometer abroad the STP 78−1 satellite (Bowyer et al., 1981) are discussed in terms of two secondary electron flux distribution models. One of these is based on calculations published by Rees and Maeda (1973) and the other on electron flux observations. Using the 1084 Å NII line as the norm, the relative intensities of several lines in the range 900–1400 Å could be fitted equally well by either model, indicating that some of these emission ratios are somewhat independent of the energy dependence of the secondary electron flux. The ratio of the NI 1243 Å to 1084 Å emission is seen to yield an effective correlation for the other observed emissions and a reasonably consistent estimate of the penetration depth of the aurora.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
