(Proposal ID) S14A-181 (PI) Tao Chihiro (Proposal Title) First estimate of Jovian auroral electron energy and comparison with UV/X-ray (Abstract) We propose spectroscopy to obtain (i) the first estimates of the energy of Jovian auroral electrons using H^+_3 emission line intensities and (ii) atmospheric responses to energetic particle precipitation monitored by X-ray emissions. This information is vital for understanding the flow of energy in Jupiterfs coupled magnetosphere-ionosphere-thermosphere system. We have recently developed and improved a model which utilizes the emission intensities of H^+_3 lines to diagnose the energy of the incident auroral electrons. These proposed observations of the H+ 3 emissions from Jupiterfs auroral regions will therefore reveal, for the first time, spatially-resolved profiles of the atmospheric temperature and column density, with the incident auroral electron energy. Past observations of Jupiter's auroral H^+_3 emissions have been mainly the K-band, while this study requires near-simultaneous observations of both the K- and L- bands. This observation period is unrepeatable because extreme-ultraviolet (EUV) spectral observation by JAXA Sprint-A/EXCEED and X-ray observations by CXO, XMM, and Suzaku telescopes are scheduled. EUV spectra provide us auroral electron energy through establishing method. X-ray emission is related with energetic particle precipitation.